Add FCM push notifications, queue alerts, caller ID fixes, and auto-revert agent status

Server-side:
- Add push credential auto-creation for FCM incoming call notifications
- Add queue alert FCM notifications (data-only for background delivery)
- Add queue alert cancellation on call accept/disconnect
- Fix caller ID to show caller's number instead of Twilio number
- Fix FCM token storage when refresh_token is null
- Add pre_call_status tracking to revert agent status 30s after call ends
- Add SSE fallback polling for mobile app connectivity

Mobile app:
- Add Android telecom permissions and phone account registration
- Add VoiceFirebaseMessagingService for incoming call push handling
- Add insistent queue alert notifications with custom sound
- Fix caller number display on active call screen
- Add caller ID selection dropdown on dashboard
- Add phone numbers endpoint and provider support
- Add unit tests for CallInfo, QueueState, and CallProvider
- Remove local.properties from tracking, add .gitignore

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/settings.local.json

@@ -0,0 +1,13 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(scp:*)",
+      "Bash(grep:*)",
+      "Bash(git add:*)",
+      "Bash(git commit:*)",
+      "Bash(git push)"
+    ],
+    "deny": [],
+    "defaultMode": "acceptEdits"
+  }
+}

.gitea/workflows/update-version.yml

@@ -1,53 +0,0 @@
-name: Update Plugin Version
-
-on:
-  release:
-    types: [created, edited]
-
-jobs:
-  update-version:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Get release tag
-        id: get_tag
-        run: echo "TAG=${GITEA_REF#refs/tags/}" >> $GITEA_ENV
-
-      - name: Update version in plugin file
-        run: |
-          # Replace version in main plugin file (both header and constant)
-          sed -i "s/Version: {auto_update_value_on_deploy}/Version: ${{ env.TAG }}/" twilio-wp-plugin.php
-          sed -i "s/TWP_VERSION', '{auto_update_value_on_deploy}/TWP_VERSION', '${{ env.TAG }}/" twilio-wp-plugin.php
-
-          # Verify changes
-          grep "Version:" twilio-wp-plugin.php
-          grep "TWP_VERSION" twilio-wp-plugin.php
-
-      - name: Commit changes
-        run: |
-          git config --local user.email "action@gitea.com"
-          git config --local user.name "Gitea Action"
-          git add twilio-wp-plugin.php
-          git commit -m "Update version to ${{ env.TAG }}" || echo "No changes to commit"
-          git push || echo "Nothing to push"
-
-      - name: Create plugin zip
-        run: |
-          mkdir -p /tmp/twilio-wp-plugin
-          rsync -av --exclude=".git" --exclude=".gitea" --exclude="build" . /tmp/twilio-wp-plugin/
-          cd /tmp
-          zip -r $GITEA_WORK_DIR/twilio-wp-plugin.zip twilio-wp-plugin
-
-      - name: Upload zip to release
-        uses: actions/upload-release-asset@v1
-        env:
-          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
-        with:
-          upload_url: ${{ gitea.event.release.upload_url }}
-          asset_path: twilio-wp-plugin.zip
-          asset_name: twilio-wp-plugin.zip
-          asset_content_type: application/zip

.gitignore

@@ -0,0 +1,22 @@
+# Dependencies
+vendor/
+node_modules/
+
+# Build artifacts
+mobile/android/.gradle/
+mobile/android/build/
+mobile/android/app/build/
+mobile/build/
+mobile/.dart_tool/
+
+# Local config (machine-specific paths)
+mobile/android/local.properties
+
+# IDE
+.idea/
+*.iml
+.vscode/
+
+# OS
+.DS_Store
+Thumbs.db

CLAUDE.md

@@ -6,6 +6,25 @@
 - **URL**: `https://phone.cloud-hosting.io/`
 - **Deployment**: rsync to Docker (remote server only, not local)
 - **SDK**: Twilio PHP SDK v8.7.0
+- **PHP**: 8.0+ required
+- **Optional**: AWS SDK (`aws/aws-sdk-php`) for SNS SMS provider
+- **External SDK**: `wp-content/twilio-sdk/` (survives plugin updates)
+
+## Commands
+- **Install SDK (recommended)**: `./install-twilio-sdk-external.sh` (installs to `wp-content/twilio-sdk/`)
+- **Install SDK (internal)**: `./install-twilio-sdk.sh` (installs to `vendor/`, lost on plugin update)
+- **Test SDK**: `php test-sdk.php`
+- **Composer install SDK**: `composer install-sdk`
+- **Deploy**: rsync to Docker (remote server, see production path above)
+- **CI/CD**: Gitea workflows in `.gitea/workflows/` — `release.yml`, `update-version.yml`
+
+## Directory Structure
+- `twilio-wp-plugin.php` — Main plugin file, constants, SDK loading
+- `includes/` — All backend classes (28 class files)
+- `admin/` — Admin UI class (`TWP_Admin`), mobile app settings page
+- `assets/js/` — Browser phone JS, service worker
+- `assets/images/`, `assets/sounds/` — Static assets
+- `.gitea/workflows/` — CI/CD (release, version update)
 
 ## Phone Variable Names
 **Use**: `incoming_number`, `agent_number`, `customer_number`, `workflow_number`, `queue_number`, `default_number`  
@@ -17,11 +36,20 @@
 - **TWP_Admin**: Has `find_customer_call_leg()` - CRITICAL for call control
 - **TWP_TTS_Helper**: ElevenLabs/Alice fallback, 30-day cache
 - **TWP_User_Queue_Manager**: Auto-creates queues/extensions (100-9999)
-- **TWP_Webhooks**: 26 endpoints at `twilio-webhook/v1`
-- **TWP_Activator**: Creates 15 DB tables, run `ensure_tables_exist()` if missing
+- **TWP_Webhooks**: 35 endpoints at `twilio-webhook/v1`
+- **TWP_Activator**: Creates 16 DB tables, run `ensure_tables_exist()` if missing
+- **TWP_Core**: Main plugin orchestrator, hooks all classes together
+- **TWP_SMS_Manager**: SMS abstraction with provider interface
+- **TWP_SMS_Provider_Twilio** / **TWP_SMS_Provider_SNS**: SMS providers (Twilio default, AWS SNS optional)
+- **TWP_Mobile_API**: REST API for mobile app
+- **TWP_Mobile_Auth** / **TWP_Mobile_SSE** / **TWP_FCM**: Mobile auth, server-sent events, push notifications
+- **TWP_Call_Queue**: Queue operations and management
+- **TWP_Callback_Manager**: Callback request handling
+- **TWP_Workflow**: Workflow step execution engine
+- **TWP_Auto_Updater**: Plugin auto-update from Gitea releases
 
 ## Database
-15 tables with `twp_` prefix. Key notes:
+16 tables with `twp_` prefix. Key notes:
 - `twp_call_queues`: User queues (general/personal/hold)
 - `twp_agent_status`: Has `auto_busy_at` for 1-min auto-revert
 - `twp_queued_calls`: Uses `enqueued_at` not `joined_at`
@@ -40,13 +68,6 @@ $api->update_call($customer_call_sid, ['twiml' => $twiml_xml]);
 - Queue: Pass `waitUrl` as option in `enqueue()`
 - TwiML: Use SDK classes, not raw XML
 
-## Recent Changes (v2.3.0)
-- Browser phone moved to admin-only
-- Call control uses `find_customer_call_leg()` to prevent disconnections
-- Auto-creates user queues/extensions when needed
-- Firefox support added
-- 1-min agent status auto-revert
-
 ## Development Notes
 - **API**: E.164 format (+1XXXXXXXXXX)
 - **Database**: Use `$wpdb`, prepared statements
@@ -59,7 +80,51 @@ $api->update_call($customer_call_sid, ['twiml' => $twiml_xml]);
 - User-specific queues with extensions
 - Browser phone at `admin.php?page=twilio-wp-browser-phone`
 - ElevenLabs TTS with Alice fallback
-- 68 AJAX actions, 26 REST endpoints
+- 77 AJAX actions, 35 REST endpoints
+- Browser phone moved to admin-only (v2.3.0)
+- Firefox, Chrome, Safari, Edge support
+- 1-min agent status auto-revert
+
+## SDK Loading
+- **External SDK (Recommended)**: `wp-content/twilio-sdk/` — survives plugin updates
+- **Internal SDK**: `vendor/` — deleted on plugin update, needs reinstall
+- Loading priority: External first (`TWP_EXTERNAL_SDK_DIR`), then internal fallback
+- Post-update hook (`upgrader_process_complete`) warns if SDK missing
+
+## Browser Phone Configuration
+- **Edge Location**: `twp_twilio_edge` option, default `roaming`
+- Options: roaming, ashburn, umatilla, dublin, frankfurt, singapore, sydney, tokyo, sao-paulo
+- Wrong edge causes immediate call failures (e.g., US calls with Sydney edge)
+
+## Mobile App SSE (Server-Sent Events)
+The mobile app uses SSE for real-time updates (queue changes, agent status). If SSE doesn't work (green dot stays red), the app automatically falls back to 5-second polling.
+
+### Apache + PHP-FPM Buffering Fix
+`mod_proxy_fcgi` buffers PHP output by default, which breaks SSE streaming. Fix by adding a config file on the server:
+
+```bash
+echo 'ProxyPassMatch "^/wp-json/twilio-mobile/v1/stream/events$" "unix:/run/php-fpm/www.sock|fcgi://localhost/home/shadowdao/public_html/index.php" flushpackets=on' > /etc/httpd/conf.d/twp-sse.conf
+httpd -t && systemctl restart httpd
+```
+
+- **`flushpackets=on`** is the key — tells Apache to flush PHP-FPM output immediately
+- This is a `ProxyPassMatch` directive — **cannot** go in `.htaccess`, must be server config
+- The PHP-FPM socket path (`/run/php-fpm/www.sock`) must match `/etc/httpd/conf.d/php.conf`
+- If the server uses nginx instead of Apache, add `X-Accel-Buffering: no` header (already in PHP code)
+- If behind HAProxy with HTTP/2, the issue is Apache→client buffering, not HTTP/2 framing
+
+### Diagnosis
+```bash
+# Check PHP-FPM proxy config
+grep -r "fcgi\|php-fpm" /etc/httpd/conf.d/
+# Check if flushpackets is configured
+grep -r "flushpackets" /etc/httpd/conf.d/
+# Test SSE endpoint (should stream data, not hang)
+curl -N -H "Authorization: Bearer TOKEN" https://phone.cloud-hosting.io/wp-json/twilio-mobile/v1/stream/events
+```
+
+## Changelog
+See `README.md` for detailed version history. Current version: v2.8.9.
 
 ---
-*Updated: Sept 2025*
+*Updated: Mar 2026*

DEBUGGING-TABLET.md

@@ -0,0 +1,427 @@
+# Debugging Browser Phone on Android Tablet
+
+This guide explains how to debug the Twilio WordPress Plugin browser phone on Android tablets (Samsung and other devices).
+
+## Prerequisites
+
+- Android tablet with Chrome browser
+- USB cable to connect tablet to computer
+- Computer with Chrome browser installed
+- USB debugging enabled on tablet
+
+---
+
+## Part 1: Enable USB Debugging on Android Tablet
+
+### Step 1: Enable Developer Options
+
+1. Open **Settings** on your Android tablet
+2. Scroll down to **About tablet** (or **About device**)
+3. Find **Build number** (may be under "Software information")
+4. Tap **Build number** 7 times rapidly
+5. You'll see a message: "You are now a developer!"
+
+### Step 2: Enable USB Debugging
+
+1. Go back to **Settings**
+2. Scroll down to **Developer options** (newly appeared)
+3. Toggle **Developer options** to ON
+4. Find **USB debugging** in the list
+5. Toggle **USB debugging** to ON
+6. Confirm the prompt if asked
+
+### Step 3: Trust Your Computer
+
+1. Connect tablet to computer via USB cable
+2. Unlock your tablet screen
+3. A popup will appear: "Allow USB debugging?"
+4. Check **Always allow from this computer**
+5. Tap **OK** or **Allow**
+
+---
+
+## Part 2: Connect Chrome DevTools
+
+### On Your Computer
+
+1. Open **Chrome browser** on your computer
+2. Navigate to: `chrome://inspect`
+3. You should see your tablet device listed under "Remote Target"
+4. Wait a few seconds for the device to appear
+
+### Inspect the Browser Phone Page
+
+1. On your tablet, open Chrome and navigate to:
+   ```
+   https://phone.cloud-hosting.io/wp-admin/admin.php?page=twilio-wp-browser-phone
+   ```
+2. On your computer's Chrome DevTools (`chrome://inspect`), you'll see the page listed
+3. Click **inspect** next to the browser phone page
+4. A DevTools window will open showing your tablet's browser
+
+---
+
+## Part 3: Debug Browser Phone Issues
+
+### Check Console Logs
+
+In the **Console** tab, look for key messages:
+
+#### Successful Connection
+```
+Twilio SDK loaded successfully
+Setting up Twilio Device...
+Device detection - Android: true, Mobile: true
+AudioContext created, state: running
+Device registered successfully
+Device connection state: connected
+```
+
+#### Connection Issues
+```
+Device not connected, state: disconnected
+Failed to register device
+Connection error: 31005
+```
+
+#### Call Issues
+```
+Answer button clicked
+Device connection state: connected
+Accepting call...
+Call accepted and connected
+```
+
+### Monitor Network Requests
+
+1. Switch to **Network** tab in DevTools
+2. Filter by: `twp_` or `twilio`
+3. Check for failed requests (red status codes)
+4. Look for:
+   - `twp_generate_capability_token` - Should return 200
+   - `twp_get_phone_numbers` - Should return 200
+   - WebSocket connections to Twilio
+
+### Check Device Registration
+
+In the **Console** tab, type:
+```javascript
+device
+```
+This shows the current Twilio Device object. Check:
+- `device.state` - Should be "registered"
+- `device.token` - Should exist (long string)
+
+### Check AudioContext State
+
+In the **Console** tab, type:
+```javascript
+audioContext
+```
+Check:
+- Should exist (not null)
+- `audioContext.state` - Should be "running" (not "suspended")
+
+---
+
+## Part 4: Common Issues & Solutions
+
+### Issue 1: "Device not connected" Error
+
+**Symptoms**: Status shows "Disconnected", calls hang up immediately
+
+**Debugging**:
+```javascript
+// In console, check:
+deviceConnectionState
+// Should be: "connected"
+```
+
+**Solutions**:
+1. Check network connection (try WiFi vs cellular)
+2. Refresh the page with cache cleared
+3. Check console for token errors
+4. Verify Twilio credentials in plugin settings
+
+### Issue 2: Call Hangs Up Immediately When Answered
+
+**Symptoms**: Click "Answer" button, call disconnects instantly
+
+**Debugging**:
+```javascript
+// Check device state before answering:
+deviceConnectionState
+// Check for errors in call handler
+```
+
+**Look for console errors**:
+- `31005` - Connection/network error
+- `31201` - ICE connection failure
+- `31208` - Media connection error
+
+**Solutions**:
+1. Grant microphone permissions (Settings > Site settings > Microphone)
+2. Check AudioContext is running: `audioContext.state`
+3. Try switching between WiFi and cellular data
+4. Clear Chrome cache and reload
+
+### Issue 3: No Sound/Ringtone on Incoming Call
+
+**Symptoms**: Call arrives but no audio plays, no vibration
+
+**Debugging**:
+```javascript
+// Check audio setup:
+ringtoneAudio
+audioContext.state
+```
+
+**Solutions**:
+1. Tap screen to unlock AudioContext (mobile restriction)
+2. Check if ringtone file exists (optional, vibration is fallback)
+3. Verify device supports Vibration API: `'vibrate' in navigator`
+4. Check browser volume settings
+
+### Issue 4: No Browser Notifications
+
+**Symptoms**: No notification when call arrives in background
+
+**Debugging**:
+```javascript
+// Check notification permission:
+Notification.permission
+// Should be: "granted"
+
+// Check service worker:
+navigator.serviceWorker.controller
+// Should exist
+```
+
+**Solutions**:
+1. Grant notification permission: Settings > Site settings > Notifications
+2. Check service worker registration in **Application** tab of DevTools
+3. Look for service worker logs in console
+4. Reinstall PWA if installed
+
+### Issue 5: Microphone Permission Denied
+
+**Symptoms**: Error message about microphone access
+
+**Solutions**:
+1. Chrome Settings > Site settings > Microphone
+2. Find `phone.cloud-hosting.io`
+3. Change permission to **Allow**
+4. Refresh the browser phone page
+
+---
+
+## Part 5: Tablet-Specific Checks
+
+### Check User Agent
+
+In console:
+```javascript
+navigator.userAgent
+```
+Should include "Android" and "Chrome"
+
+### Check WebRTC Support
+
+```javascript
+// Check getUserMedia support:
+navigator.mediaDevices.getUserMedia
+// Should be: function
+
+// Check Notification support:
+'Notification' in window
+// Should be: true
+
+// Check Service Worker support:
+'serviceWorker' in navigator
+// Should be: true
+```
+
+### Check Audio Constraints
+
+Look in console for:
+```
+Twilio Device created with audio constraints: {
+  echoCancellation: true,
+  noiseSuppression: true,
+  autoGainControl: true,
+  googEchoCancellation: true,
+  ...
+}
+```
+
+### Test Vibration
+
+In console:
+```javascript
+navigator.vibrate([300, 200, 300])
+```
+Tablet should vibrate if supported.
+
+---
+
+## Part 6: Advanced Debugging
+
+### Monitor Twilio Device Events
+
+In console, add event listeners:
+```javascript
+device.on('registered', () => console.log('Device registered!'));
+device.on('error', (error) => console.error('Device error:', error));
+device.on('incoming', (call) => console.log('Incoming call:', call));
+device.on('unregistered', () => console.log('Device unregistered'));
+```
+
+### Check Call State During Active Call
+
+```javascript
+// When in a call:
+currentCall
+currentCall.status()
+currentCall.parameters
+```
+
+### Test Audio Context Resume
+
+```javascript
+// Try to resume manually:
+audioContext.resume().then(() => {
+  console.log('AudioContext state:', audioContext.state);
+});
+```
+
+### Check Token Expiry
+
+```javascript
+// See when token expires:
+new Date(tokenExpiry)
+```
+
+---
+
+## Part 7: Logging Important Information
+
+### Collect Debugging Info
+
+Run this in console to get a debug report:
+```javascript
+console.log('=== Browser Phone Debug Report ===');
+console.log('User Agent:', navigator.userAgent);
+console.log('Device State:', deviceConnectionState);
+console.log('Device Registered:', device ? device.state : 'no device');
+console.log('AudioContext:', audioContext ? audioContext.state : 'no context');
+console.log('Notification Permission:', Notification.permission);
+console.log('Service Worker:', navigator.serviceWorker.controller ? 'active' : 'inactive');
+console.log('Current Call:', currentCall ? 'in call' : 'no call');
+console.log('Token Expiry:', tokenExpiry ? new Date(tokenExpiry) : 'unknown');
+```
+
+### Check WordPress AJAX Responses
+
+In **Network** tab:
+1. Filter: `admin-ajax.php`
+2. Click on request
+3. Check **Preview** tab for response
+4. Look for `success: true` or error messages
+
+---
+
+## Part 8: Testing Checklist
+
+After fixing issues, test these scenarios:
+
+- [ ] Device shows "Connected" status
+- [ ] Can make outbound call successfully
+- [ ] Can receive incoming call (see notification)
+- [ ] Can answer incoming call without hang-up
+- [ ] Ringtone plays or tablet vibrates
+- [ ] Call audio is clear (echo cancellation working)
+- [ ] Can switch between WiFi and cellular during call
+- [ ] Browser notification appears when app in background
+- [ ] Service worker logs appear in console
+- [ ] No errors in console during call lifecycle
+- [ ] Can put call on hold
+- [ ] Can transfer call
+- [ ] Call timer updates correctly
+
+---
+
+## Troubleshooting Specific Error Codes
+
+### Twilio Error 31005
+**Meaning**: WebSocket connection failed
+
+**Causes**:
+- Network connectivity issues
+- Firewall blocking WebSocket
+- Mobile network switching (WiFi ↔ cellular)
+
+**Solutions**:
+- Check internet connection
+- Try different network
+- Wait for ICE restart (enabled in config)
+
+### Twilio Error 31201
+**Meaning**: ICE connection failed
+
+**Causes**:
+- Restrictive NAT/firewall
+- Mobile network issues
+
+**Solutions**:
+- Try different network
+- Check WebRTC connectivity
+- Enable mobile data if on WiFi only
+
+### Twilio Error 31204
+**Meaning**: Connection error
+
+**Causes**:
+- Media connection setup failed
+- Signaling timeout
+
+**Solutions**:
+- Refresh page
+- Check microphone permissions
+- Verify audio constraints applied
+
+### Twilio Error 31208
+**Meaning**: Media connection failed
+
+**Causes**:
+- Microphone access denied
+- Audio device issues
+
+**Solutions**:
+- Grant microphone permission
+- Check device audio settings
+- Restart browser
+
+---
+
+## Additional Resources
+
+- Twilio Voice SDK Errors: https://www.twilio.com/docs/voice/sdks/javascript/errors
+- Chrome DevTools Remote Debugging: https://developer.chrome.com/docs/devtools/remote-debugging/
+- WebRTC Troubleshooting: https://webrtc.github.io/samples/
+- Service Worker Debugging: https://developer.chrome.com/docs/workbox/
+
+---
+
+## Contact & Support
+
+If issues persist after following this guide:
+
+1. Collect debug report (see Part 7)
+2. Take screenshots of console errors
+3. Note tablet model and Android version
+4. Report issue with collected information
+
+**Important Files**:
+- Browser phone implementation: `admin/class-twp-admin.php` (lines 7400-8300)
+- Service worker: `assets/js/twp-service-worker.js`
+- CLAUDE.md: Quick reference guide

README.md

@@ -8,11 +8,20 @@ This plugin **requires** the Twilio PHP SDK v8.7.0 to function. The plugin will
 
 ## Quick Installation
 
-1. **Install the Twilio SDK** (Required):
+1. **Install the Twilio SDK** (Required - Recommended Method):
+   ```bash
+   chmod +x install-twilio-sdk-external.sh
+   ./install-twilio-sdk-external.sh
+   ```
+
+   This installs the SDK to `wp-content/twilio-sdk/` which **survives WordPress plugin updates**. The plugin will automatically detect and use this external SDK.
+
+   **Alternative Method** (SDK will be deleted during plugin updates):
    ```bash
    chmod +x install-twilio-sdk.sh
    ./install-twilio-sdk.sh
    ```
+   This installs the SDK inside the plugin folder. You'll need to reinstall the SDK after each plugin update.
 
 2. **Test the SDK installation**:
    ```bash
@@ -23,6 +32,7 @@ This plugin **requires** the Twilio PHP SDK v8.7.0 to function. The plugin will
    - Go to **Twilio** → **Settings**
    - Enter Account SID and Auth Token
    - Configure default phone numbers
+   - Set Twilio Edge Location (for browser phone - see Browser Phone Setup below)
 
 4. **Set up Phone Numbers** in Twilio Console:
    - Configure webhook URLs for voice and SMS
@@ -333,8 +343,20 @@ Comprehensive redesign of hold, transfer, and requeue functionality with profess
 2. **Configure in WordPress**:
    - Go to **Twilio** → **Settings**
    - Enter TwiML App SID
+   - **Set Twilio Edge Location**: Select the edge location closest to your users (IMPORTANT)
+     - **Auto-select closest (Recommended)**: Automatically selects the best edge
+     - **US East (Ashburn)**: For East Coast USA users
+     - **US West (Umatilla)**: For West Coast USA users
+     - **Europe - Ireland (Dublin)**: For European users
+     - **Europe - Germany (Frankfurt)**: For Central European users
+     - **Singapore**: For Southeast Asian users
+     - **Sydney**: For Australian users
+     - **Tokyo**: For Japanese users
+     - **Sao Paulo**: For South American users
    - Save settings
 
+   **Note**: Selecting the wrong edge location can cause calls to fail immediately. If you're experiencing browser phone connection issues, verify your edge location is appropriate for your region.
+
 3. **Access Browser Phone** (Admin Only):
    - Navigate to **WordPress Admin** → **Twilio** → **Browser Phone**
    - Select caller ID from available numbers
@@ -432,14 +454,34 @@ Access the full browser phone interface at: **WordPress Admin → Twilio → Bro
 - **Login Required**: Users must be logged in to access browser phone functionality
 - Check TwiML App SID is configured in WordPress admin settings
 
+#### Browser Phone Calls Failing Immediately
+If browser phone calls disconnect immediately or show HANGUP errors:
+- **Check Edge Location Setting**: Go to **Twilio** → **Settings** → **Twilio Edge Location**
+- **US Users**: Should use "Auto-select closest" (roaming), "US East (Ashburn)", or "US West (Umatilla)"
+- **International Users**: Select the edge location closest to your region
+- **Problem**: Wrong edge location causes gateway to immediately reject calls
+- **Solution**: Change edge location setting and try the call again (no restart needed)
+
 #### "Twilio SDK classes not available"
+
+**Recommended Solution** (SDK survives plugin updates):
 ```bash
-# Reinstall SDK
+# Install SDK to external location
+./install-twilio-sdk-external.sh
+# Test installation
+php test-sdk.php
+```
+
+**Alternative Solution** (will need reinstall after plugin updates):
+```bash
+# Install SDK inside plugin folder
 ./install-twilio-sdk.sh
 # Test installation
 php test-sdk.php
 ```
 
+**After WordPress Plugin Update**: If you get this error after updating the plugin and used the internal SDK method, you'll need to reinstall the SDK. This won't happen if you use the external SDK method.
+
 #### Calls Not Routing to Queues
 - Verify queue exists and is active
 - Check agent group has members
@@ -551,7 +593,19 @@ All webhooks are REST API endpoints under `/wp-json/twilio-webhook/v1/`:
 
 ## Version History
 
-### v2.3.0 (Current - September 2025) - ENTERPRISE READY
+### v2.8.9 (Current - January 2026) - SDK PERSISTENCE & BROWSER PHONE FIXES
+- **SDK PERSISTENCE**: External SDK installation option that survives WordPress plugin updates
+  - New installation script: `install-twilio-sdk-external.sh` installs SDK to `wp-content/twilio-sdk/`
+  - Automatic detection: Plugin checks external SDK location first, falls back to internal
+  - Post-update warnings: Notifies if SDK was deleted during plugin update
+  - Zero downtime: Phone system continues working through plugin updates
+- **BROWSER PHONE FIX**: Resolved US calls failing immediately with HANGUP errors
+  - Made Twilio Edge Location configurable (was hardcoded to Sydney)
+  - New setting: Twilio Edge Location with 8 options (roaming/auto-select, ashburn, umatilla, dublin, frankfurt, singapore, sydney, tokyo, sao-paulo)
+  - Default: "roaming" (auto-select closest edge for optimal performance)
+  - Critical fix: US users can now make calls successfully (were failing with Sydney edge)
+
+### v2.3.0 (September 2025) - ENTERPRISE READY
 - **SECURITY ENHANCEMENT**: Removed frontend browser phone interface, moved to admin-only access for enhanced security
 - **ASSET REDUCTION**: Eliminated 108KB of frontend assets (browser-phone-frontend.js and CSS files)
 - **SHORTCODE SECURITY**: Browser phone shortcode now provides secure redirect with authentication checks
@@ -611,4 +665,4 @@ This plugin integrates with Twilio services and requires a Twilio account.
 
 ---
 
-**Enterprise Ready v2.3.0** - Extension transfers, browser phone compatibility, and automatic agent management now production-ready with comprehensive reliability improvements.
+**Production Ready v2.8.9** - SDK persistence through plugin updates and configurable edge locations ensure zero-downtime phone operations.

admin/class-twp-admin.php

@@ -340,13 +340,32 @@ class TWP_Admin {
                     <tr>
                         <th scope="row">TwiML App SID</th>
                         <td>
-                            <input type="text" name="twp_twiml_app_sid" 
-                                   value="<?php echo esc_attr(get_option('twp_twiml_app_sid')); ?>" 
+                            <input type="text" name="twp_twiml_app_sid"
+                                   value="<?php echo esc_attr(get_option('twp_twiml_app_sid')); ?>"
                                    class="regular-text" />
                             <p class="description">TwiML Application SID for Browser Phone (optional). <a href="#twiml-app-instructions">See setup instructions below</a></p>
                         </td>
                     </tr>
-                    
+
+                    <tr>
+                        <th scope="row">Twilio Edge Location</th>
+                        <td>
+                            <?php $current_edge = get_option('twp_twilio_edge', 'roaming'); ?>
+                            <select name="twp_twilio_edge" class="regular-text">
+                                <option value="roaming" <?php selected($current_edge, 'roaming'); ?>>Auto-select closest (Recommended)</option>
+                                <option value="ashburn" <?php selected($current_edge, 'ashburn'); ?>>US East (Ashburn)</option>
+                                <option value="umatilla" <?php selected($current_edge, 'umatilla'); ?>>US West (Umatilla)</option>
+                                <option value="dublin" <?php selected($current_edge, 'dublin'); ?>>Europe - Ireland (Dublin)</option>
+                                <option value="frankfurt" <?php selected($current_edge, 'frankfurt'); ?>>Europe - Germany (Frankfurt)</option>
+                                <option value="singapore" <?php selected($current_edge, 'singapore'); ?>>Asia Pacific (Singapore)</option>
+                                <option value="sydney" <?php selected($current_edge, 'sydney'); ?>>Australia (Sydney)</option>
+                                <option value="tokyo" <?php selected($current_edge, 'tokyo'); ?>>Japan (Tokyo)</option>
+                                <option value="sao-paulo" <?php selected($current_edge, 'sao-paulo'); ?>>South America (Sao Paulo)</option>
+                            </select>
+                            <p class="description">Edge location for browser phone calls. Use "Auto-select closest" for best call quality, or select a specific region.</p>
+                        </td>
+                    </tr>
+
                 </table>
                 
                 <h2>Eleven Labs API Settings</h2>
@@ -1561,10 +1580,127 @@ class TWP_Admin {
                 }
             });
             </script>
+
+            <hr>
+
+            <h2>Automatic Updates</h2>
+            <?php
+            require_once TWP_PLUGIN_DIR . 'includes/class-twp-auto-updater.php';
+            $updater = new TWP_Auto_Updater();
+
+            // Handle manual update check
+            if (isset($_POST['twp_check_updates']) && check_admin_referer('twp_update_settings')) {
+                $update_result = $updater->manual_check_for_updates();
+                if (isset($update_result)) {
+                    echo '<div class="notice notice-' . ($update_result['update_available'] ? 'warning' : 'success') . ' is-dismissible">';
+                    echo '<p><strong>' . esc_html($update_result['message']) . '</strong></p></div>';
+                }
+            }
+
+            // Handle save update settings
+            if (isset($_POST['twp_save_update_settings']) && check_admin_referer('twp_update_settings')) {
+                update_option('twp_auto_update_enabled', isset($_POST['twp_auto_update_enabled']) ? '1' : '0');
+                update_option('twp_gitea_repo', sanitize_text_field($_POST['twp_gitea_repo']));
+                update_option('twp_gitea_token', sanitize_text_field($_POST['twp_gitea_token']));
+                echo '<div class="notice notice-success is-dismissible"><p><strong>Update settings saved.</strong></p></div>';
+            }
+
+            $update_status = $updater->get_update_status();
+            $auto_update_enabled = get_option('twp_auto_update_enabled', '1') === '1';
+            $gitea_repo = get_option('twp_gitea_repo', 'wp-plugins/twilio-wp-plugin');
+            $gitea_token = get_option('twp_gitea_token', '');
+            ?>
+            <form method="post" action="">
+                <?php wp_nonce_field('twp_update_settings'); ?>
+                <div class="card">
+                    <table class="form-table">
+                        <tr>
+                            <th scope="row">Current Version</th>
+                            <td>
+                                <strong><?php echo esc_html($update_status['current_version']); ?></strong>
+                                <?php if ($update_status['update_available']): ?>
+                                    <span style="color: #d63638; margin-left: 10px;">
+                                        Update available: <?php echo esc_html($update_status['latest_version']); ?>
+                                    </span>
+                                <?php else: ?>
+                                    <span style="color: #00a32a; margin-left: 10px;">Up to date</span>
+                                <?php endif; ?>
+                            </td>
+                        </tr>
+                        <tr>
+                            <th scope="row">
+                                <label for="twp_auto_update_enabled">Enable Auto-Updates</label>
+                            </th>
+                            <td>
+                                <label>
+                                    <input type="checkbox"
+                                           id="twp_auto_update_enabled"
+                                           name="twp_auto_update_enabled"
+                                           value="1"
+                                           <?php checked($auto_update_enabled); ?>>
+                                    Automatically check for updates every 12 hours
+                                </label>
+                            </td>
+                        </tr>
+                        <tr>
+                            <th scope="row">
+                                <label for="twp_gitea_repo">Gitea Repository</label>
+                            </th>
+                            <td>
+                                <input type="text"
+                                       id="twp_gitea_repo"
+                                       name="twp_gitea_repo"
+                                       value="<?php echo esc_attr($gitea_repo); ?>"
+                                       class="regular-text"
+                                       placeholder="org/repo-name">
+                                <p class="description">
+                                    Format: organization/repository (e.g., wp-plugins/twilio-wp-plugin)
+                                </p>
+                            </td>
+                        </tr>
+                        <tr>
+                            <th scope="row">
+                                <label for="twp_gitea_token">Gitea Access Token</label>
+                            </th>
+                            <td>
+                                <input type="password"
+                                       id="twp_gitea_token"
+                                       name="twp_gitea_token"
+                                       value="<?php echo esc_attr($gitea_token); ?>"
+                                       class="regular-text">
+                                <p class="description">
+                                    Optional. Required only for private repositories.
+                                </p>
+                            </td>
+                        </tr>
+                        <tr>
+                            <th scope="row">Last Update Check</th>
+                            <td>
+                                <?php
+                                $last_check = $update_status['last_check'];
+                                if ($last_check > 0) {
+                                    echo esc_html(human_time_diff($last_check, current_time('timestamp')) . ' ago');
+                                } else {
+                                    echo 'Never';
+                                }
+                                ?>
+                                <button type="submit" name="twp_check_updates" class="button" style="margin-left: 15px;">
+                                    Check Now
+                                </button>
+                            </td>
+                        </tr>
+                    </table>
+                    <p>
+                        <button type="submit" name="twp_save_update_settings" class="button button-primary">
+                            Save Update Settings
+                        </button>
+                    </p>
+                </div>
+            </form>
         </div>
         <?php
     }
-    
+
     /**
      * Display schedules page
      */
@@ -3818,6 +3954,7 @@ class TWP_Admin {
         register_setting('twilio-wp-settings-group', 'twp_twilio_account_sid');
         register_setting('twilio-wp-settings-group', 'twp_twilio_auth_token');
         register_setting('twilio-wp-settings-group', 'twp_twiml_app_sid');
+        register_setting('twilio-wp-settings-group', 'twp_twilio_edge');
         register_setting('twilio-wp-settings-group', 'twp_elevenlabs_api_key');
         register_setting('twilio-wp-settings-group', 'twp_elevenlabs_voice_id');
         register_setting('twilio-wp-settings-group', 'twp_elevenlabs_model_id');
@@ -6996,7 +7133,7 @@ class TWP_Admin {
                 <div class="phone-interface">
                     <div class="phone-display">
                         <div id="phone-status">Ready</div>
-                        <div id="device-connection-status" style="font-size: 12px; color: #999; margin-top: 5px;">Connecting...</div>
+                        <div id="device-connection-status" style="font-size: 12px; color: #999; margin-top: 5px;">Loading...</div>
                         <div id="phone-number-display"></div>
                         <div id="call-timer" style="display: none;">00:00</div>
                     </div>
@@ -7425,6 +7562,11 @@ class TWP_Admin {
             }
             </style>
             
+            <!-- Preload and preconnect for faster loading -->
+            <link rel="preload" href="https://unpkg.com/@twilio/voice-sdk@2.11.0/dist/twilio.min.js" as="script">
+            <link rel="dns-prefetch" href="//unpkg.com">
+            <link rel="dns-prefetch" href="//chunderw-vpc-gll.twilio.com">
+            <link rel="preconnect" href="https://chunderw-vpc-gll.twilio.com" crossorigin>
             <!-- Twilio Voice SDK v2 from unpkg CDN -->
             <script src="https://unpkg.com/@twilio/voice-sdk@2.11.0/dist/twilio.min.js"></script>
             <script>
@@ -7779,7 +7921,7 @@ class TWP_Admin {
                         device = new Twilio.Device(token, {
                             logLevel: 1, // 0 = TRACE, 1 = DEBUG
                             codecPreferences: ['opus', 'pcmu'],
-                            edge: 'sydney', // Or closest edge location
+                            edge: '<?php echo esc_js(get_option('twp_twilio_edge', 'roaming')); ?>',
                             enableIceRestart: true, // Important for mobile network switching
                             audioConstraints: audioConstraints,
                             maxCallSignalingTimeoutMs: 30000, // 30 seconds timeout for mobile
@@ -7787,7 +7929,7 @@ class TWP_Admin {
                         });
 
                         console.log('Twilio Device created with audio constraints:', audioConstraints);
-                        
+
                         // Set up event handlers BEFORE registering
                         // Device registered and ready
                         device.on('registered', function() {
@@ -7874,7 +8016,7 @@ class TWP_Admin {
                         
                         // Register device AFTER setting up event handlers
                         await device.register();
-                        
+
                     } catch (error) {
                         console.error('Error setting up Twilio Device:', error);
                         showError('Failed to setup device: ' + error.message);
@@ -8213,16 +8355,40 @@ class TWP_Admin {
                 });
                 
                 // Check if SDK loaded and initialize
+                // Poll for Twilio SDK availability (window.load may not fire on mobile)
+                var sdkCheckAttempts = 0;
+                var maxSdkCheckAttempts = 100; // 5 seconds max (100 * 50ms)
+
+                function checkAndInitialize() {
+                    sdkCheckAttempts++;
+
+                    if (typeof Twilio !== 'undefined' && Twilio.Device) {
+                        console.log('Twilio SDK loaded successfully');
+                        initializeBrowserPhone();
+                    } else if (sdkCheckAttempts < maxSdkCheckAttempts) {
+                        // Keep checking every 50ms for faster response
+                        setTimeout(checkAndInitialize, 50);
+                    } else {
+                        showError('Twilio Voice SDK failed to load. Please check your internet connection and try refreshing the page.');
+                        console.error('Twilio SDK not found after ' + sdkCheckAttempts + ' attempts.');
+                    }
+                }
+
+                // Check immediately - SDK script is synchronous so should be loaded
+                // If not ready yet (mobile), polling will catch it
+                if (typeof Twilio !== 'undefined' && Twilio.Device) {
+                    console.log('Twilio SDK already loaded');
+                    initializeBrowserPhone();
+                } else {
+                    // Start polling immediately
+                    checkAndInitialize();
+                }
+
+                // Also keep the window.load as backup for desktop
                 $(window).on('load', function() {
-                    setTimeout(function() {
-                        if (typeof Twilio === 'undefined') {
-                            showError('Twilio Voice SDK failed to load. Please check your internet connection and try refreshing the page.');
-                            console.error('Twilio SDK not found. Script may be blocked or failed to load.');
-                        } else {
-                            console.log('Twilio SDK loaded successfully');
-                            initializeBrowserPhone();
-                        }
-                    }, 1000);
+                    if (typeof Twilio !== 'undefined' && !device) {
+                        initializeBrowserPhone();
+                    }
                 });
                 
                 // Clean up on page unload

admin/mobile-app-settings.php

@@ -13,13 +13,6 @@ if (!current_user_can('manage_options')) {
     wp_die(__('You do not have sufficient permissions to access this page.'));
 }
 
-// Handle manual update check
-if (isset($_POST['twp_check_updates']) && check_admin_referer('twp_mobile_settings')) {
-    require_once TWP_PLUGIN_DIR . 'includes/class-twp-auto-updater.php';
-    $updater = new TWP_Auto_Updater();
-    $update_result = $updater->manual_check_for_updates();
-}
-
 // Handle test notification
 if (isset($_POST['twp_test_notification']) && check_admin_referer('twp_mobile_settings')) {
     require_once TWP_PLUGIN_DIR . 'includes/class-twp-fcm.php';
@@ -36,25 +29,26 @@ if (isset($_POST['twp_test_notification']) && check_admin_referer('twp_mobile_se
 
 // Save settings
 if (isset($_POST['twp_save_mobile_settings']) && check_admin_referer('twp_mobile_settings')) {
-    update_option('twp_fcm_server_key', sanitize_text_field($_POST['twp_fcm_server_key']));
-    update_option('twp_auto_update_enabled', isset($_POST['twp_auto_update_enabled']) ? '1' : '0');
-    update_option('twp_gitea_repo', sanitize_text_field($_POST['twp_gitea_repo']));
-    update_option('twp_gitea_token', sanitize_text_field($_POST['twp_gitea_token']));
-
+    update_option('twp_fcm_project_id', sanitize_text_field($_POST['twp_fcm_project_id']));
+    // Service account JSON — validate it parses as JSON before saving
+    $sa_json_raw = isset($_POST['twp_fcm_service_account_json']) ? wp_unslash($_POST['twp_fcm_service_account_json']) : '';
+    if (!empty($sa_json_raw)) {
+        $sa_parsed = json_decode($sa_json_raw, true);
+        if ($sa_parsed && isset($sa_parsed['client_email'], $sa_parsed['private_key'])) {
+            update_option('twp_fcm_service_account_json', $sa_json_raw);
+        } else {
+            $sa_json_error = 'Invalid service account JSON — must contain client_email and private_key fields.';
+        }
+    } else {
+        update_option('twp_fcm_service_account_json', '');
+    }
     $settings_saved = true;
 }
 
 // Get current settings
-$fcm_server_key = get_option('twp_fcm_server_key', '');
-$auto_update_enabled = get_option('twp_auto_update_enabled', '1') === '1';
-$gitea_repo = get_option('twp_gitea_repo', 'wp-plugins/twilio-wp-plugin');
-$gitea_token = get_option('twp_gitea_token', '');
-
-// Get update status
-require_once TWP_PLUGIN_DIR . 'includes/class-twp-auto-updater.php';
-$updater = new TWP_Auto_Updater();
-$update_status = $updater->get_update_status();
-
+$fcm_project_id = get_option('twp_fcm_project_id', '');
+$fcm_service_account_json = get_option('twp_fcm_service_account_json', '');
+$fcm_sa_configured = !empty($fcm_service_account_json) && !empty($fcm_project_id);
 // Get mobile app statistics
 global $wpdb;
 $sessions_table = $wpdb->prefix . 'twp_mobile_sessions';
@@ -72,18 +66,18 @@ $total_sessions = $wpdb->get_var("SELECT COUNT(*) FROM $sessions_table");
         </div>
     <?php endif; ?>
 
-    <?php if (isset($update_result)): ?>
-        <div class="notice notice-<?php echo $update_result['update_available'] ? 'warning' : 'success'; ?> is-dismissible">
-            <p><strong><?php echo esc_html($update_result['message']); ?></strong></p>
-        </div>
-    <?php endif; ?>
-
     <?php if (isset($notification_result)): ?>
         <div class="notice notice-<?php echo $notification_result['success'] ? 'success' : 'error'; ?> is-dismissible">
             <p><strong><?php echo esc_html($notification_result['message']); ?></strong></p>
         </div>
     <?php endif; ?>
 
+    <?php if (isset($sa_json_error)): ?>
+        <div class="notice notice-error is-dismissible">
+            <p><strong><?php echo esc_html($sa_json_error); ?></strong></p>
+        </div>
+    <?php endif; ?>
+
     <div class="twp-mobile-settings">
         <!-- Mobile App Overview -->
         <div class="card" style="max-width: 100%; margin-bottom: 20px;">
@@ -112,29 +106,48 @@ $total_sessions = $wpdb->get_var("SELECT COUNT(*) FROM $sessions_table");
 
             <!-- FCM Configuration -->
             <div class="card" style="max-width: 100%; margin-bottom: 20px;">
-                <h2>Firebase Cloud Messaging (FCM)</h2>
-                <p>Configure FCM to enable push notifications for the mobile app.</p>
+                <h2>Firebase Cloud Messaging (FCM) — HTTP v2 API</h2>
+                <p>Configure FCM using a service account for push notifications. The legacy server key API has been retired by Google.</p>
 
                 <table class="form-table">
                     <tr>
                         <th scope="row">
-                            <label for="twp_fcm_server_key">FCM Server Key</label>
+                            <label for="twp_fcm_project_id">Firebase Project ID</label>
                         </th>
                         <td>
                             <input type="text"
-                                   id="twp_fcm_server_key"
-                                   name="twp_fcm_server_key"
-                                   value="<?php echo esc_attr($fcm_server_key); ?>"
+                                   id="twp_fcm_project_id"
+                                   name="twp_fcm_project_id"
+                                   value="<?php echo esc_attr($fcm_project_id); ?>"
                                    class="regular-text"
-                                   placeholder="AAAA...">
+                                   placeholder="my-project-12345">
                             <p class="description">
-                                Get your server key from Firebase Console > Project Settings > Cloud Messaging > Server Key
+                                Found in Firebase Console &gt; Project Settings &gt; General &gt; Project ID
                             </p>
                         </td>
                     </tr>
+                    <tr>
+                        <th scope="row">
+                            <label for="twp_fcm_service_account_json">Service Account JSON</label>
+                        </th>
+                        <td>
+                            <textarea id="twp_fcm_service_account_json"
+                                      name="twp_fcm_service_account_json"
+                                      rows="6"
+                                      class="large-text code"
+                                      placeholder='Paste the entire contents of your service account JSON file...'><?php echo esc_textarea($fcm_service_account_json); ?></textarea>
+                            <p class="description">
+                                Generate in Firebase Console &gt; Project Settings &gt; Service Accounts &gt; Generate New Private Key.
+                                Paste the entire JSON file contents here. Must contain <code>client_email</code> and <code>private_key</code> fields.
+                            </p>
+                            <?php if ($fcm_sa_configured): ?>
+                                <p style="color: #00a32a; margin-top: 5px;">&#10003; Service account configured</p>
+                            <?php endif; ?>
+                        </td>
+                    </tr>
                 </table>
 
-                <?php if (!empty($fcm_server_key)): ?>
+                <?php if ($fcm_sa_configured): ?>
                     <p>
                         <button type="submit" name="twp_test_notification" class="button">
                             Send Test Notification
@@ -144,91 +157,6 @@ $total_sessions = $wpdb->get_var("SELECT COUNT(*) FROM $sessions_table");
                 <?php endif; ?>
             </div>
 
-            <!-- Auto-Update Settings -->
-            <div class="card" style="max-width: 100%; margin-bottom: 20px;">
-                <h2>Automatic Updates</h2>
-
-                <table class="form-table">
-                    <tr>
-                        <th scope="row">Current Version</th>
-                        <td>
-                            <strong><?php echo esc_html($update_status['current_version']); ?></strong>
-                            <?php if ($update_status['update_available']): ?>
-                                <span style="color: #d63638; margin-left: 10px;">
-                                    ⚠ Update available: <?php echo esc_html($update_status['latest_version']); ?>
-                                </span>
-                            <?php else: ?>
-                                <span style="color: #00a32a; margin-left: 10px;">✓ Up to date</span>
-                            <?php endif; ?>
-                        </td>
-                    </tr>
-                    <tr>
-                        <th scope="row">
-                            <label for="twp_auto_update_enabled">Enable Auto-Updates</label>
-                        </th>
-                        <td>
-                            <label>
-                                <input type="checkbox"
-                                       id="twp_auto_update_enabled"
-                                       name="twp_auto_update_enabled"
-                                       value="1"
-                                       <?php checked($auto_update_enabled); ?>>
-                                Automatically check for updates every 12 hours
-                            </label>
-                        </td>
-                    </tr>
-                    <tr>
-                        <th scope="row">
-                            <label for="twp_gitea_repo">Gitea Repository</label>
-                        </th>
-                        <td>
-                            <input type="text"
-                                   id="twp_gitea_repo"
-                                   name="twp_gitea_repo"
-                                   value="<?php echo esc_attr($gitea_repo); ?>"
-                                   class="regular-text"
-                                   placeholder="org/repo-name">
-                            <p class="description">
-                                Format: organization/repository (e.g., wp-plugins/twilio-wp-plugin)
-                            </p>
-                        </td>
-                    </tr>
-                    <tr>
-                        <th scope="row">
-                            <label for="twp_gitea_token">Gitea Access Token</label>
-                        </th>
-                        <td>
-                            <input type="password"
-                                   id="twp_gitea_token"
-                                   name="twp_gitea_token"
-                                   value="<?php echo esc_attr($gitea_token); ?>"
-                                   class="regular-text"
-                                   placeholder="">
-                            <p class="description">
-                                Optional. Required only for private repositories. Create token at:
-                                <a href="https://repo.anhonesthost.net/user/settings/applications" target="_blank">Gitea Settings > Applications</a>
-                            </p>
-                        </td>
-                    </tr>
-                    <tr>
-                        <th scope="row">Last Update Check</th>
-                        <td>
-                            <?php
-                            $last_check = $update_status['last_check'];
-                            if ($last_check > 0) {
-                                echo esc_html(human_time_diff($last_check, current_time('timestamp')) . ' ago');
-                            } else {
-                                echo 'Never';
-                            }
-                            ?>
-                            <button type="submit" name="twp_check_updates" class="button" style="margin-left: 15px;">
-                                Check Now
-                            </button>
-                        </td>
-                    </tr>
-                </table>
-            </div>
-
             <!-- API Documentation -->
             <div class="card" style="max-width: 100%; margin-bottom: 20px;">
                 <h2>API Endpoints</h2>
@@ -273,6 +201,11 @@ $total_sessions = $wpdb->get_var("SELECT COUNT(*) FROM $sessions_table");
                             <td>GET</td>
                             <td>Server-Sent Events stream for real-time updates</td>
                         </tr>
+                        <tr>
+                            <td><code>/twilio-mobile/v1/voice/token</code></td>
+                            <td>GET</td>
+                            <td>Get Twilio Voice access token for VoIP</td>
+                        </tr>
                     </tbody>
                 </table>
 

includes/class-twp-activator.php

@@ -479,7 +479,13 @@ class TWP_Activator {
         if (empty($auto_busy_at_exists)) {
             $wpdb->query("ALTER TABLE $table_agent_status ADD COLUMN auto_busy_at datetime DEFAULT NULL AFTER logged_in_at");
         }
-        
+
+        // Add pre_call_status column to store status before a call set agent to busy
+        $pre_call_exists = $wpdb->get_results("SHOW COLUMNS FROM $table_agent_status LIKE 'pre_call_status'");
+        if (empty($pre_call_exists)) {
+            $wpdb->query("ALTER TABLE $table_agent_status ADD COLUMN pre_call_status varchar(20) DEFAULT NULL AFTER auto_busy_at");
+        }
+
         $table_schedules = $wpdb->prefix . 'twp_phone_schedules';
         
         // Check if holiday_dates column exists

includes/class-twp-agent-manager.php

@@ -619,35 +619,35 @@ class TWP_Agent_Manager {
     }
     
     /**
-     * Check and revert agents from auto-busy to available after 1 minute
+     * Check and revert agents from auto-busy to their previous status after 30 seconds
      */
     public static function revert_auto_busy_agents() {
         global $wpdb;
         $table_name = $wpdb->prefix . 'twp_agent_status';
-        
-        // Find agents who have been auto-busy for more than 1 minute and are still logged in
-        $cutoff_time = date('Y-m-d H:i:s', strtotime('-1 minute'));
-        
+
+        // Find agents who have been auto-busy for more than 30 seconds and are still logged in
+        $cutoff_time = date('Y-m-d H:i:s', strtotime('-30 seconds'));
+
         $auto_busy_agents = $wpdb->get_results($wpdb->prepare(
-            "SELECT user_id, current_call_sid FROM $table_name 
-             WHERE status = 'busy' 
-             AND auto_busy_at IS NOT NULL 
+            "SELECT user_id, current_call_sid, pre_call_status FROM $table_name
+             WHERE status = 'busy'
+             AND auto_busy_at IS NOT NULL
              AND auto_busy_at < %s
              AND is_logged_in = 1",
             $cutoff_time
         ));
-        
+
         foreach ($auto_busy_agents as $agent) {
             // Verify the call is actually finished before reverting
             $call_sid = $agent->current_call_sid;
             $call_active = false;
-            
+
             if ($call_sid) {
                 // Check if call is still active using Twilio API
                 try {
                     $api = new TWP_Twilio_API();
                     $call_status = $api->get_call_status($call_sid);
-                    
+
                     // If call is still in progress, don't revert yet
                     if (in_array($call_status, ['queued', 'ringing', 'in-progress'])) {
                         $call_active = true;
@@ -655,17 +655,25 @@ class TWP_Agent_Manager {
                     }
                 } catch (Exception $e) {
                     error_log("TWP Auto-Revert: Could not check call status for {$call_sid}: " . $e->getMessage());
-                    // If we can't check call status, assume it's finished and proceed with revert
                 }
             }
-            
+
             // Only revert if call is not active
             if (!$call_active) {
-                error_log("TWP Auto-Revert: Reverting user {$agent->user_id} from auto-busy to available");
-                self::set_agent_status($agent->user_id, 'available', null, false);
+                $revert_to = !empty($agent->pre_call_status) ? $agent->pre_call_status : 'available';
+                error_log("TWP Auto-Revert: Reverting user {$agent->user_id} from busy to {$revert_to}");
+                self::set_agent_status($agent->user_id, $revert_to, null, false);
+                // Clear pre_call_status
+                $wpdb->update(
+                    $table_name,
+                    array('pre_call_status' => null),
+                    array('user_id' => $agent->user_id),
+                    array('%s'),
+                    array('%d')
+                );
             }
         }
-        
+
         return count($auto_busy_agents);
     }
     

includes/class-twp-auto-updater.php

@@ -19,7 +19,7 @@ class TWP_Auto_Updater {
     public function __construct() {
         $this->plugin_basename = plugin_basename(dirname(dirname(__FILE__)) . '/twilio-wp-plugin.php');
         $this->current_version = defined('TWP_VERSION') ? TWP_VERSION : '0.0.0';
-        $this->gitea_api_url = $this->gitea_base_url . '/api/v1/repos/' . $this->gitea_repo . '/releases/latest';
+        $this->gitea_api_url = $this->gitea_base_url . '/api/v1/repos/' . $this->gitea_repo . '/releases?limit=1&draft=false';
     }
 
     /**
@@ -74,7 +74,7 @@ class TWP_Auto_Updater {
         $custom_repo = get_option('twp_gitea_repo', '');
         if (!empty($custom_repo)) {
             $this->gitea_repo = $custom_repo;
-            $this->gitea_api_url = $this->gitea_base_url . '/api/v1/repos/' . $this->gitea_repo . '/releases/latest';
+            $this->gitea_api_url = $this->gitea_base_url . '/api/v1/repos/' . $this->gitea_repo . '/releases?limit=1&draft=false';
         }
 
         $update_info = $this->get_latest_release();
@@ -184,9 +184,16 @@ class TWP_Auto_Updater {
             return false;
         }
 
-        $release = json_decode($response);
+        $releases = json_decode($response);
 
-        if (!$release || !isset($release->tag_name)) {
+        if (!$releases || !is_array($releases) || empty($releases)) {
+            error_log('TWP Auto-Updater: No releases found from Gitea');
+            return false;
+        }
+
+        $release = $releases[0];
+
+        if (!isset($release->tag_name)) {
             error_log('TWP Auto-Updater: Invalid release data from Gitea');
             return false;
         }
@@ -210,6 +217,12 @@ class TWP_Auto_Updater {
             $download_url = $release->zipball_url;
         }
 
+        // Append auth token to download URL for private repos
+        if (!empty($gitea_token) && $download_url) {
+            $separator = (strpos($download_url, '?') !== false) ? '&' : '?';
+            $download_url .= $separator . 'token=' . urlencode($gitea_token);
+        }
+
         // Format changelog
         $changelog = !empty($release->body) ? $release->body : 'No changelog provided for this release.';
 

includes/class-twp-call-queue.php

@@ -33,8 +33,8 @@ class TWP_Call_Queue {
         );
         
         if ($result !== false) {
-            // Notify agents via SMS when a new call enters the queue
-            self::notify_agents_for_queue($queue_id, $call_data['from_number']);
+            // Notify agents via SMS and FCM when a new call enters the queue
+            self::notify_agents_for_queue($queue_id, $call_data['from_number'], $call_data['call_sid']);
             return $position;
         }
         
@@ -580,44 +580,62 @@ class TWP_Call_Queue {
     /**
      * Notify agents via SMS when a call enters the queue
      */
-    private static function notify_agents_for_queue($queue_id, $caller_number) {
+    private static function notify_agents_for_queue($queue_id, $caller_number, $call_sid = '') {
         global $wpdb;
-        
+
         error_log("TWP: notify_agents_for_queue called for queue {$queue_id}, caller {$caller_number}");
-        
+
         // Get queue information including assigned agent group and phone number
         $queue_table = $wpdb->prefix . 'twp_call_queues';
         $queue = $wpdb->get_row($wpdb->prepare(
             "SELECT * FROM $queue_table WHERE id = %d",
             $queue_id
         ));
-        
+
         if (!$queue) {
             error_log("TWP: Queue {$queue_id} not found in database");
             return;
         }
-        
-        if (!$queue->agent_group_id) {
-            error_log("TWP: No agent group assigned to queue {$queue_id}, skipping SMS notifications");
-            return;
-        }
-        
-        error_log("TWP: Found queue '{$queue->queue_name}' with agent group {$queue->agent_group_id}");
-        
+
         // Send Discord/Slack notification for incoming call
         require_once dirname(__FILE__) . '/class-twp-notifications.php';
-        error_log("TWP: Triggering Discord/Slack notification for incoming call");
         TWP_Notifications::send_call_notification('incoming_call', array(
             'type' => 'incoming_call',
             'caller' => $caller_number,
             'queue' => $queue->queue_name,
             'queue_id' => $queue_id
         ));
-        
+
+        // Send FCM push notifications to agents' mobile devices
+        require_once dirname(__FILE__) . '/class-twp-fcm.php';
+        $fcm = new TWP_FCM();
+        $notified_users = array();
+
+        // Always notify personal queue owner
+        if (!empty($queue->user_id)) {
+            $fcm->notify_queue_alert($queue->user_id, $caller_number, $queue->queue_name, $call_sid);
+            $notified_users[] = $queue->user_id;
+            error_log("TWP: FCM queue alert sent to queue owner user {$queue->user_id}");
+        }
+
+        if (!$queue->agent_group_id) {
+            error_log("TWP: No agent group assigned to queue {$queue_id}, skipping SMS notifications");
+            return;
+        }
+
+        error_log("TWP: Found queue '{$queue->queue_name}' with agent group {$queue->agent_group_id}");
+
         // Get members of the assigned agent group
         require_once dirname(__FILE__) . '/class-twp-agent-groups.php';
         $members = TWP_Agent_Groups::get_group_members($queue->agent_group_id);
-        
+
+        foreach ($members as $member) {
+            if (!in_array($member->user_id, $notified_users)) {
+                $fcm->notify_queue_alert($member->user_id, $caller_number, $queue->queue_name, $call_sid);
+                $notified_users[] = $member->user_id;
+            }
+        }
+
         if (empty($members)) {
             error_log("TWP: No members found in agent group {$queue->agent_group_id} for queue {$queue_id}");
             return;

includes/class-twp-fcm.php

@@ -1,27 +1,33 @@
 <?php
 /**
- * Firebase Cloud Messaging (FCM) Integration
+ * Firebase Cloud Messaging (FCM) Integration — HTTP v2 API
  *
- * Handles push notifications to mobile devices via FCM
+ * Handles push notifications to mobile devices via FCM using
+ * service account credentials and OAuth2 access tokens.
  */
 class TWP_FCM {
 
-    private $server_key;
-    private $fcm_url = 'https://fcm.googleapis.com/fcm/send';
+    private $project_id;
+    private $service_account;
+    private $fcm_url_template = 'https://fcm.googleapis.com/v1/projects/%s/messages:send';
 
     /**
      * Constructor
      */
     public function __construct() {
-        $this->server_key = get_option('twp_fcm_server_key', '');
+        $this->project_id = get_option('twp_fcm_project_id', '');
+        $sa_json = get_option('twp_fcm_service_account_json', '');
+        if (!empty($sa_json)) {
+            $this->service_account = json_decode($sa_json, true);
+        }
     }
 
     /**
      * Send push notification to user's devices
      */
-    public function send_notification($user_id, $title, $body, $data = array()) {
-        if (empty($this->server_key)) {
-            error_log('TWP FCM: Server key not configured');
+    public function send_notification($user_id, $title, $body, $data = array(), $data_only = false) {
+        if (empty($this->project_id) || empty($this->service_account)) {
+            error_log('TWP FCM: Project ID or service account not configured');
             return false;
         }
 
@@ -37,7 +43,7 @@ class TWP_FCM {
         $failed_tokens = array();
 
         foreach ($tokens as $token) {
-            $result = $this->send_to_token($token, $title, $body, $data);
+            $result = $this->send_to_token($token, $title, $body, $data, $data_only);
 
             if ($result['success']) {
                 $success_count++;
@@ -57,35 +63,54 @@ class TWP_FCM {
     }
 
     /**
-     * Send notification to specific token
+     * Send notification to specific token via FCM HTTP v2 API
      */
-    private function send_to_token($token, $title, $body, $data = array()) {
-        $notification = array(
-            'title' => $title,
-            'body' => $body,
-            'sound' => 'default',
-            'priority' => 'high',
-            'click_action' => 'FLUTTER_NOTIFICATION_CLICK'
+    private function send_to_token($token, $title, $body, $data = array(), $data_only = false) {
+        $access_token = $this->get_access_token();
+        if (!$access_token) {
+            return array('success' => false, 'error' => 'auth_failed');
+        }
+
+        // FCM v2 requires all data values to be strings
+        $string_data = array();
+        foreach ($data as $key => $value) {
+            $string_data[$key] = is_string($value) ? $value : (string)$value;
+        }
+        $string_data['title'] = $title;
+        $string_data['body'] = $body;
+        $string_data['timestamp'] = (string)time();
+
+        // Build the v2 message payload
+        $message = array(
+            'token' => $token,
+            'data' => $string_data,
+            'android' => array(
+                'priority' => 'high',
+            ),
         );
 
-        $payload = array(
-            'to' => $token,
-            'notification' => $notification,
-            'data' => array_merge($data, array(
+        if (!$data_only) {
+            $message['notification'] = array(
                 'title' => $title,
                 'body' => $body,
-                'timestamp' => time()
-            )),
-            'priority' => 'high'
-        );
+            );
+            $message['android']['notification'] = array(
+                'sound' => 'default',
+                'click_action' => 'FLUTTER_NOTIFICATION_CLICK',
+            );
+        }
+
+        $payload = array('message' => $message);
+
+        $url = sprintf($this->fcm_url_template, $this->project_id);
 
         $headers = array(
-            'Authorization: key=' . $this->server_key,
+            'Authorization: Bearer ' . $access_token,
             'Content-Type: application/json'
         );
 
         $ch = curl_init();
-        curl_setopt($ch, CURLOPT_URL, $this->fcm_url);
+        curl_setopt($ch, CURLOPT_URL, $url);
         curl_setopt($ch, CURLOPT_POST, true);
         curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@@ -99,10 +124,14 @@ class TWP_FCM {
         if ($http_code !== 200) {
             error_log("TWP FCM: Failed to send notification. HTTP $http_code: $response");
 
-            // Check if token is invalid
             $response_data = json_decode($response, true);
-            if (isset($response_data['results'][0]['error']) &&
-                in_array($response_data['results'][0]['error'], array('InvalidRegistration', 'NotRegistered'))) {
+            $error_code = isset($response_data['error']['details'][0]['errorCode'])
+                ? $response_data['error']['details'][0]['errorCode'] : '';
+            $error_status = isset($response_data['error']['status'])
+                ? $response_data['error']['status'] : '';
+
+            if (in_array($error_code, array('UNREGISTERED', 'INVALID_ARGUMENT')) ||
+                $error_status === 'NOT_FOUND') {
                 return array('success' => false, 'error' => 'invalid_token');
             }
 
@@ -112,6 +141,107 @@ class TWP_FCM {
         return array('success' => true);
     }
 
+    /**
+     * Get OAuth2 access token from service account credentials.
+     * Caches the token in a transient until near expiry.
+     */
+    private function get_access_token() {
+        $cached = get_transient('twp_fcm_access_token');
+        if ($cached) {
+            return $cached;
+        }
+
+        if (empty($this->service_account)) {
+            error_log('TWP FCM: Service account not configured');
+            return false;
+        }
+
+        $jwt = $this->create_jwt();
+        if (!$jwt) {
+            return false;
+        }
+
+        $ch = curl_init();
+        curl_setopt($ch, CURLOPT_URL, $this->service_account['token_uri']);
+        curl_setopt($ch, CURLOPT_POST, true);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
+        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array(
+            'grant_type' => 'urn:ietf:params:oauth:grant-type:jwt-bearer',
+            'assertion' => $jwt,
+        )));
+
+        $response = curl_exec($ch);
+        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
+
+        if ($http_code !== 200) {
+            error_log("TWP FCM: Failed to get access token. HTTP $http_code: $response");
+            return false;
+        }
+
+        $token_data = json_decode($response, true);
+        $access_token = $token_data['access_token'];
+        $expires_in = isset($token_data['expires_in']) ? (int)$token_data['expires_in'] : 3600;
+
+        // Cache token for 5 minutes less than actual expiry
+        set_transient('twp_fcm_access_token', $access_token, max(60, $expires_in - 300));
+
+        return $access_token;
+    }
+
+    /**
+     * Create a signed JWT for the service account OAuth2 flow
+     */
+    private function create_jwt() {
+        $sa = $this->service_account;
+
+        if (empty($sa['client_email']) || empty($sa['private_key']) || empty($sa['token_uri'])) {
+            error_log('TWP FCM: Service account JSON missing required fields');
+            return false;
+        }
+
+        $now = time();
+        $header = array('alg' => 'RS256', 'typ' => 'JWT');
+        $claims = array(
+            'iss' => $sa['client_email'],
+            'scope' => 'https://www.googleapis.com/auth/firebase.messaging',
+            'aud' => $sa['token_uri'],
+            'iat' => $now,
+            'exp' => $now + 3600,
+        );
+
+        $segments = array(
+            $this->base64url_encode(json_encode($header)),
+            $this->base64url_encode(json_encode($claims)),
+        );
+
+        $signing_input = implode('.', $segments);
+
+        $private_key = openssl_pkey_get_private($sa['private_key']);
+        if (!$private_key) {
+            error_log('TWP FCM: Failed to parse service account private key');
+            return false;
+        }
+
+        $signature = '';
+        if (!openssl_sign($signing_input, $signature, $private_key, OPENSSL_ALGO_SHA256)) {
+            error_log('TWP FCM: Failed to sign JWT');
+            return false;
+        }
+
+        $segments[] = $this->base64url_encode($signature);
+
+        return implode('.', $segments);
+    }
+
+    /**
+     * Base64url encode (RFC 4648)
+     */
+    private function base64url_encode($data) {
+        return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
+    }
+
     /**
      * Get all active FCM tokens for a user
      */
@@ -149,20 +279,66 @@ class TWP_FCM {
     }
 
     /**
-     * Send incoming call notification
+     * Send queue alert notification (call entered queue).
+     * Uses data-only message so it works in background/killed state.
      */
-    public function notify_incoming_call($user_id, $from_number, $queue_name, $call_sid) {
-        $title = 'Incoming Call';
-        $body = "Call from $from_number in $queue_name queue";
+    public function notify_queue_alert($user_id, $from_number, $queue_name, $call_sid) {
+        $title = 'Call Waiting';
+        $body = "Call from $from_number in $queue_name";
 
         $data = array(
-            'type' => 'incoming_call',
+            'type' => 'queue_alert',
             'call_sid' => $call_sid,
             'from_number' => $from_number,
-            'queue_name' => $queue_name
+            'queue_name' => $queue_name,
         );
 
-        return $this->send_notification($user_id, $title, $body, $data);
+        return $this->send_notification($user_id, $title, $body, $data, true);
+    }
+
+    /**
+     * Cancel queue alert notification (call answered or caller disconnected).
+     */
+    public function notify_queue_alert_cancel($user_id, $call_sid) {
+        $data = array(
+            'type' => 'queue_alert_cancel',
+            'call_sid' => $call_sid,
+        );
+
+        return $this->send_notification($user_id, '', '', $data, true);
+    }
+
+    /**
+     * Send queue alert cancel to all agents assigned to a queue.
+     */
+    public function cancel_queue_alert_for_queue($queue_id, $call_sid) {
+        global $wpdb;
+        $queue_table = $wpdb->prefix . 'twp_call_queues';
+
+        $queue = $wpdb->get_row($wpdb->prepare(
+            "SELECT * FROM $queue_table WHERE id = %d", $queue_id
+        ));
+        if (!$queue) return;
+
+        $notified_users = array();
+
+        // Notify personal queue owner
+        if (!empty($queue->user_id)) {
+            $this->notify_queue_alert_cancel($queue->user_id, $call_sid);
+            $notified_users[] = $queue->user_id;
+        }
+
+        // Notify agent group members
+        if (!empty($queue->agent_group_id)) {
+            require_once dirname(__FILE__) . '/class-twp-agent-groups.php';
+            $members = TWP_Agent_Groups::get_group_members($queue->agent_group_id);
+            foreach ($members as $member) {
+                if (!in_array($member->user_id, $notified_users)) {
+                    $this->notify_queue_alert_cancel($member->user_id, $call_sid);
+                    $notified_users[] = $member->user_id;
+                }
+            }
+        }
     }
 
     /**
@@ -206,7 +382,7 @@ class TWP_FCM {
 
         $data = array(
             'type' => 'test',
-            'test' => true
+            'test' => 'true'
         );
 
         return $this->send_notification($user_id, $title, $body, $data);

includes/class-twp-mobile-api.php

@@ -99,6 +99,34 @@ class TWP_Mobile_API {
                 'callback' => array($this, 'update_agent_phone'),
                 'permission_callback' => array($this->auth, 'verify_token')
             ));
+
+            // Voice token for VoIP
+            register_rest_route('twilio-mobile/v1', '/voice/token', array(
+                'methods' => 'GET',
+                'callback' => array($this, 'get_voice_token'),
+                'permission_callback' => array($this->auth, 'verify_token')
+            ));
+
+            // Phone numbers for caller ID
+            register_rest_route('twilio-mobile/v1', '/phone-numbers', array(
+                'methods' => 'GET',
+                'callback' => array($this, 'get_phone_numbers'),
+                'permission_callback' => array($this->auth, 'verify_token')
+            ));
+
+            // Outbound call (click-to-call via server)
+            register_rest_route('twilio-mobile/v1', '/calls/outbound', array(
+                'methods' => 'POST',
+                'callback' => array($this, 'initiate_outbound_call'),
+                'permission_callback' => array($this->auth, 'verify_token')
+            ));
+
+            // FCM push credential setup (admin only)
+            register_rest_route('twilio-mobile/v1', '/admin/push-credential', array(
+                'methods' => 'POST',
+                'callback' => array($this, 'setup_push_credential'),
+                'permission_callback' => array($this->auth, 'verify_token')
+            ));
         });
     }
 
@@ -155,39 +183,16 @@ class TWP_Mobile_API {
             return new WP_Error('invalid_status', 'Status must be available, busy, or offline', array('status' => 400));
         }
 
-        global $wpdb;
-        $table = $wpdb->prefix . 'twp_agent_status';
-
-        // Check if status exists
-        $exists = $wpdb->get_var($wpdb->prepare(
-            "SELECT COUNT(*) FROM $table WHERE user_id = %d",
-            $user_id
-        ));
-
-        $data = array(
-            'status' => $new_status,
-            'last_activity' => current_time('mysql')
-        );
+        require_once plugin_dir_path(__FILE__) . 'class-twp-agent-manager.php';
+        require_once plugin_dir_path(__FILE__) . 'class-twp-user-queue-manager.php';
 
+        // Handle login status change first (matches browser phone behavior)
         if ($is_logged_in !== null) {
-            $data['is_logged_in'] = $is_logged_in ? 1 : 0;
-            if ($is_logged_in) {
-                $data['logged_in_at'] = current_time('mysql');
-            }
+            TWP_Agent_Manager::set_agent_login_status($user_id, (bool)$is_logged_in);
         }
 
-        if ($exists) {
-            $wpdb->update(
-                $table,
-                $data,
-                array('user_id' => $user_id),
-                array('%s', '%s'),
-                array('%d')
-            );
-        } else {
-            $data['user_id'] = $user_id;
-            $wpdb->insert($table, $data);
-        }
+        // Set agent status (handles auto_busy_at and all status fields)
+        TWP_Agent_Manager::set_agent_status($user_id, $new_status);
 
         return new WP_REST_Response(array(
             'success' => true,
@@ -204,44 +209,42 @@ class TWP_Mobile_API {
         global $wpdb;
         $queues_table = $wpdb->prefix . 'twp_call_queues';
         $calls_table = $wpdb->prefix . 'twp_queued_calls';
-        $assignments_table = $wpdb->prefix . 'twp_queue_assignments';
+        $groups_table = $wpdb->prefix . 'twp_group_members';
 
-        // Get queues assigned to this user
-        $queue_ids = $wpdb->get_col($wpdb->prepare(
-            "SELECT queue_id FROM $assignments_table WHERE user_id = %d",
+        // Auto-create personal queues if they don't exist
+        $extensions_table = $wpdb->prefix . 'twp_user_extensions';
+        $existing_extension = $wpdb->get_row($wpdb->prepare(
+            "SELECT extension FROM $extensions_table WHERE user_id = %d",
             $user_id
         ));
 
-        // Also include personal queues
-        $personal_queue_ids = $wpdb->get_col($wpdb->prepare(
-            "SELECT id FROM $queues_table WHERE user_id = %d",
-            $user_id
-        ));
-
-        $all_queue_ids = array_unique(array_merge($queue_ids, $personal_queue_ids));
-
-        if (empty($all_queue_ids)) {
-            return new WP_REST_Response(array(
-                'success' => true,
-                'queues' => array()
-            ), 200);
+        if (!$existing_extension) {
+            require_once plugin_dir_path(__FILE__) . 'class-twp-user-queue-manager.php';
+            TWP_User_Queue_Manager::create_user_queues($user_id);
         }
 
-        $queue_ids_str = implode(',', array_map('intval', $all_queue_ids));
-
-        // Get queue information with call counts
-        $queues = $wpdb->get_results("
-            SELECT
+        // Get queues where user is a member of the assigned agent group OR personal/hold queues
+        $queues = $wpdb->get_results($wpdb->prepare("
+            SELECT DISTINCT
                 q.id,
                 q.queue_name,
                 q.queue_type,
                 q.extension,
                 COUNT(c.id) as waiting_count
             FROM $queues_table q
+            LEFT JOIN $groups_table gm ON gm.group_id = q.agent_group_id
             LEFT JOIN $calls_table c ON q.id = c.queue_id AND c.status = 'waiting'
-            WHERE q.id IN ($queue_ids_str)
+            WHERE (gm.user_id = %d AND gm.is_active = 1)
+               OR (q.user_id = %d AND q.queue_type IN ('personal', 'hold'))
             GROUP BY q.id
-        ");
+            ORDER BY
+                CASE
+                    WHEN q.queue_type = 'personal' THEN 1
+                    WHEN q.queue_type = 'hold' THEN 2
+                    ELSE 3
+                END,
+                q.queue_name ASC
+        ", $user_id, $user_id));
 
         $result = array();
         foreach ($queues as $queue) {
@@ -308,12 +311,9 @@ class TWP_Mobile_API {
         $user_id = $this->auth->get_current_user_id();
         $call_sid = $request['call_sid'];
 
-        // Get agent phone number
-        $agent_number = get_user_meta($user_id, 'twp_agent_phone', true);
-
-        if (empty($agent_number)) {
-            return new WP_Error('no_phone', 'No phone number configured for agent', array('status' => 400));
-        }
+        // Check for WebRTC client_identity parameter
+        $body = $request->get_json_params();
+        $client_identity = isset($body['client_identity']) ? sanitize_text_field($body['client_identity']) : null;
 
         // Initialize Twilio API
         require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
@@ -338,46 +338,120 @@ class TWP_Mobile_API {
         }
 
         try {
-            // Connect agent to call
-            $agent_call = $twilio->create_call(
-                $agent_number,
-                $call->to_number,
-                array(
-                    'url' => site_url('/wp-json/twilio-webhook/v1/connect-agent'),
-                    'statusCallback' => site_url('/wp-json/twilio-webhook/v1/agent-call-status'),
-                    'statusCallbackEvent' => array('completed', 'no-answer', 'busy', 'failed'),
-                    'timeout' => 30
-                )
-            );
+            if (!empty($client_identity)) {
+                // WebRTC path: redirect the queued call to the Twilio Client device
+                // Use the original caller's number as caller ID so it shows on the agent's device
+                $caller_id = $call->from_number;
+                if (empty($caller_id)) {
+                    $caller_id = $call->to_number;
+                }
+                if (empty($caller_id)) {
+                    $caller_id = get_option('twp_caller_id_number', '');
+                }
 
-            // Update call record
-            $wpdb->update(
-                $calls_table,
-                array(
-                    'status' => 'connecting',
-                    'agent_phone' => $agent_number,
+                $twiml = '<Response><Dial callerId="' . htmlspecialchars($caller_id) . '"><Client>' . htmlspecialchars($client_identity) . '</Client></Dial></Response>';
+
+                error_log('TWP accept_call: call_sid=' . $call_sid . ' client=' . $client_identity . ' twiml=' . $twiml);
+
+                $result = $twilio->update_call($call_sid, array('twiml' => $twiml));
+
+                error_log('TWP accept_call result: ' . json_encode($result));
+                if (!$result['success']) {
+                    return new WP_Error('twilio_error', $result['error'] ?? 'Failed to update call', array('status' => 500));
+                }
+
+                // Update call record
+                $wpdb->update(
+                    $calls_table,
+                    array(
+                        'status' => 'connecting',
+                        'agent_phone' => 'client:' . $client_identity,
+                    ),
+                    array('call_sid' => $call_sid),
+                    array('%s', '%s'),
+                    array('%s')
+                );
+
+                // Save current status before setting busy, so we can revert after call ends
+                $status_table = $wpdb->prefix . 'twp_agent_status';
+                $current = $wpdb->get_row($wpdb->prepare(
+                    "SELECT status FROM $status_table WHERE user_id = %d", $user_id
+                ));
+                $pre_call_status = ($current && $current->status !== 'busy') ? $current->status : null;
+
+                $wpdb->update(
+                    $status_table,
+                    array(
+                        'status' => 'busy',
+                        'current_call_sid' => $call_sid,
+                        'pre_call_status' => $pre_call_status,
+                        'auto_busy_at' => null,
+                    ),
+                    array('user_id' => $user_id),
+                    array('%s', '%s', '%s', '%s'),
+                    array('%d')
+                );
+
+                // Cancel queue alert notifications on all agents' devices
+                require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-fcm.php';
+                $fcm = new TWP_FCM();
+                $fcm->cancel_queue_alert_for_queue($call->queue_id, $call_sid);
+
+                return new WP_REST_Response(array(
+                    'success' => true,
+                    'message' => 'Call accepted via WebRTC client',
+                    'call_sid' => $call_sid
+                ), 200);
+
+            } else {
+                // Phone-based path (original flow): dial the agent's phone number
+                $agent_number = get_user_meta($user_id, 'twp_agent_phone', true);
+
+                if (empty($agent_number)) {
+                    return new WP_Error('no_phone', 'No phone number configured for agent and no client_identity provided', array('status' => 400));
+                }
+
+                // Connect agent to call
+                $agent_call = $twilio->create_call(
+                    $agent_number,
+                    $call->to_number,
+                    array(
+                        'url' => site_url('/wp-json/twilio-webhook/v1/connect-agent'),
+                        'statusCallback' => site_url('/wp-json/twilio-webhook/v1/agent-call-status'),
+                        'statusCallbackEvent' => array('completed', 'no-answer', 'busy', 'failed'),
+                        'timeout' => 30
+                    )
+                );
+
+                // Update call record
+                $wpdb->update(
+                    $calls_table,
+                    array(
+                        'status' => 'connecting',
+                        'agent_phone' => $agent_number,
+                        'agent_call_sid' => $agent_call->sid
+                    ),
+                    array('call_sid' => $call_sid),
+                    array('%s', '%s', '%s'),
+                    array('%s')
+                );
+
+                // Update agent status
+                $status_table = $wpdb->prefix . 'twp_agent_status';
+                $wpdb->update(
+                    $status_table,
+                    array('status' => 'busy', 'current_call_sid' => $call_sid),
+                    array('user_id' => $user_id),
+                    array('%s', '%s'),
+                    array('%d')
+                );
+
+                return new WP_REST_Response(array(
+                    'success' => true,
+                    'message' => 'Call accepted, connecting to agent',
                     'agent_call_sid' => $agent_call->sid
-                ),
-                array('call_sid' => $call_sid),
-                array('%s', '%s', '%s'),
-                array('%s')
-            );
-
-            // Update agent status
-            $status_table = $wpdb->prefix . 'twp_agent_status';
-            $wpdb->update(
-                $status_table,
-                array('status' => 'busy', 'current_call_sid' => $call_sid),
-                array('user_id' => $user_id),
-                array('%s', '%s'),
-                array('%d')
-            );
-
-            return new WP_REST_Response(array(
-                'success' => true,
-                'message' => 'Call accepted, connecting to agent',
-                'agent_call_sid' => $agent_call->sid
-            ), 200);
+                ), 200);
+            }
 
         } catch (Exception $e) {
             return new WP_Error('twilio_error', $e->getMessage(), array('status' => 500));
@@ -507,11 +581,46 @@ class TWP_Mobile_API {
      * Unhold a call (resume from hold queue)
      */
     public function unhold_call($request) {
-        // Implementation would retrieve from hold queue and reconnect
-        return new WP_REST_Response(array(
-            'success' => true,
-            'message' => 'Unhold functionality - to be implemented with queue retrieval'
-        ), 501);
+        $user_id = $this->auth->get_current_user_id();
+        $call_sid = $request['call_sid'];
+
+        try {
+            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-admin.php';
+            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
+
+            $admin = new TWP_Admin('twilio-wp-plugin', TWP_VERSION);
+            $twilio = new TWP_Twilio_API();
+
+            // Find customer call leg
+            $customer_call_sid = $admin->find_customer_call_leg($call_sid, $twilio);
+
+            if (!$customer_call_sid) {
+                return new WP_Error('call_not_found', 'Could not find customer call leg', array('status' => 404));
+            }
+
+            // Build identity for this agent
+            $user = get_userdata($user_id);
+            $clean_name = preg_replace('/[^a-zA-Z0-9]/', '', $user->user_login);
+            if (empty($clean_name)) {
+                $clean_name = 'user';
+            }
+            $identity = 'agent' . $user_id . $clean_name;
+
+            // Redirect customer back to agent's client
+            $twiml = new \Twilio\TwiML\VoiceResponse();
+            $dial = $twiml->dial();
+            $dial->client($identity);
+
+            $twilio->update_call($customer_call_sid, array('twiml' => $twiml->asXML()));
+
+            return new WP_REST_Response(array(
+                'success' => true,
+                'message' => 'Call resumed from hold'
+            ), 200);
+
+        } catch (Exception $e) {
+            return new WP_Error('unhold_error', $e->getMessage(), array('status' => 500));
+        }
     }
 
     /**
@@ -641,6 +750,104 @@ class TWP_Mobile_API {
         ), 200);
     }
 
+    /**
+     * Get Voice access token for VoIP
+     */
+    public function get_voice_token($request) {
+        $user_id = $this->auth->get_current_user_id();
+        $user = get_userdata($user_id);
+        $clean_name = preg_replace('/[^a-zA-Z0-9]/', '', $user->user_login);
+        if (empty($clean_name)) {
+            $clean_name = 'user';
+        }
+        $identity = 'agent' . $user_id . $clean_name;
+
+        try {
+            // Ensure Twilio SDK autoloader is loaded
+            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
+            new TWP_Twilio_API();
+
+            $account_sid = get_option('twp_twilio_account_sid');
+            $auth_token = get_option('twp_twilio_auth_token');
+            $twiml_app_sid = get_option('twp_twiml_app_sid');
+
+            if (empty($account_sid) || empty($auth_token) || empty($twiml_app_sid)) {
+                return new WP_Error('token_error', 'Twilio credentials not configured', array('status' => 500));
+            }
+
+            // AccessToken requires an API Key (not account credentials).
+            // Auto-create and cache one if it doesn't exist yet.
+            $api_key_sid = get_option('twp_twilio_api_key_sid');
+            $api_key_secret = get_option('twp_twilio_api_key_secret');
+
+            if (empty($api_key_sid) || empty($api_key_secret)) {
+                $client = new \Twilio\Rest\Client($account_sid, $auth_token);
+                $newKey = $client->newKeys->create(['friendlyName' => 'TWP Mobile Voice']);
+                $api_key_sid = $newKey->sid;
+                $api_key_secret = $newKey->secret;
+                update_option('twp_twilio_api_key_sid', $api_key_sid);
+                update_option('twp_twilio_api_key_secret', $api_key_secret);
+            }
+
+            $token = new \Twilio\Jwt\AccessToken($account_sid, $api_key_sid, $api_key_secret, 3600, $identity);
+            $voiceGrant = new \Twilio\Jwt\Grants\VoiceGrant();
+            $voiceGrant->setOutgoingApplicationSid($twiml_app_sid);
+            $voiceGrant->setIncomingAllow(true);
+
+            // Include FCM push credential for incoming call notifications.
+            // Auto-create from the stored Firebase service account JSON if not yet created.
+            $push_credential_sid = get_option('twp_twilio_push_credential_sid');
+            if (empty($push_credential_sid)) {
+                $push_credential_sid = $this->ensure_push_credential($account_sid, $auth_token);
+            }
+            if (!empty($push_credential_sid)) {
+                $voiceGrant->setPushCredentialSid($push_credential_sid);
+            }
+
+            $token->addGrant($voiceGrant);
+
+            return new WP_REST_Response(array(
+                'token' => $token->toJWT(),
+                'identity' => $identity,
+                'expires_in' => 3600
+            ), 200);
+
+        } catch (Exception $e) {
+            return new WP_Error('token_error', $e->getMessage(), array('status' => 500));
+        }
+    }
+
+    /**
+     * Get available Twilio phone numbers for caller ID
+     */
+    public function get_phone_numbers($request) {
+        try {
+            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
+            $twilio = new TWP_Twilio_API();
+            $result = $twilio->get_phone_numbers();
+
+            if (!$result['success']) {
+                return new WP_Error('twilio_error', $result['error'], array('status' => 500));
+            }
+
+            $phone_numbers = array();
+            foreach ($result['data']['incoming_phone_numbers'] as $number) {
+                $phone_numbers[] = array(
+                    'phone_number' => $number['phone_number'],
+                    'friendly_name' => $number['friendly_name'],
+                );
+            }
+
+            return new WP_REST_Response(array(
+                'success' => true,
+                'phone_numbers' => $phone_numbers
+            ), 200);
+
+        } catch (Exception $e) {
+            return new WP_Error('twilio_error', $e->getMessage(), array('status' => 500));
+        }
+    }
+
     /**
      * Check if user has access to a queue
      */
@@ -668,6 +875,79 @@ class TWP_Mobile_API {
         return (bool)$is_assigned;
     }
 
+    /**
+     * Admin endpoint to force re-creation of the Twilio Push Credential.
+     */
+    public function setup_push_credential($request) {
+        $user_id = $this->auth->get_current_user_id();
+        $user = get_userdata($user_id);
+        if (!user_can($user, 'manage_options')) {
+            return new WP_Error('forbidden', 'Admin access required', array('status' => 403));
+        }
+
+        try {
+            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
+            new TWP_Twilio_API();
+
+            $account_sid = get_option('twp_twilio_account_sid');
+            $auth_token = get_option('twp_twilio_auth_token');
+
+            // Force re-creation by clearing existing SID
+            delete_option('twp_twilio_push_credential_sid');
+            $sid = $this->ensure_push_credential($account_sid, $auth_token);
+
+            if (empty($sid)) {
+                return new WP_Error('credential_error', 'Failed to create push credential. Check that Firebase service account JSON is configured in Mobile App Settings.', array('status' => 500));
+            }
+
+            return new WP_REST_Response(array(
+                'success' => true,
+                'credential_sid' => $sid,
+            ), 200);
+
+        } catch (Exception $e) {
+            error_log('TWP setup_push_credential error: ' . $e->getMessage());
+            return new WP_Error('credential_error', $e->getMessage(), array('status' => 500));
+        }
+    }
+
+    /**
+     * Auto-create Twilio Push Credential from the stored Firebase service account JSON.
+     * Returns the credential SID or empty string on failure.
+     */
+    private function ensure_push_credential($account_sid, $auth_token) {
+        $sa_json = get_option('twp_fcm_service_account_json', '');
+        if (empty($sa_json)) {
+            return '';
+        }
+
+        $sa = json_decode($sa_json, true);
+        if (!$sa || empty($sa['project_id']) || empty($sa['private_key'])) {
+            error_log('TWP: Firebase service account JSON is invalid');
+            return '';
+        }
+
+        try {
+            $client = new \Twilio\Rest\Client($account_sid, $auth_token);
+
+            $credential = $client->notify->v1->credentials->create(
+                'fcm',
+                [
+                    'friendlyName' => 'TWP Mobile FCM',
+                    'secret' => $sa_json,
+                ]
+            );
+
+            update_option('twp_twilio_push_credential_sid', $credential->sid);
+            error_log('TWP: Created Twilio push credential: ' . $credential->sid);
+            return $credential->sid;
+
+        } catch (Exception $e) {
+            error_log('TWP ensure_push_credential error: ' . $e->getMessage());
+            return '';
+        }
+    }
+
     /**
      * Calculate wait time in seconds
      */

includes/class-twp-mobile-auth.php

@@ -9,6 +9,7 @@ class TWP_Mobile_Auth {
     private $secret_key;
     private $token_expiry = 86400; // 24 hours in seconds
     private $refresh_expiry = 2592000; // 30 days in seconds
+    private $current_user_id = null;
 
     /**
      * Constructor
@@ -330,7 +331,7 @@ class TWP_Mobile_Auth {
         }
 
         // Store user ID for later use
-        $request->set_param('_twp_user_id', $payload->user_id);
+        $this->current_user_id = $payload->user_id;
 
         return true;
     }
@@ -339,8 +340,7 @@ class TWP_Mobile_Auth {
      * Get current user ID from token
      */
     public function get_current_user_id() {
-        $request = rest_get_server()->get_request();
-        return $request->get_param('_twp_user_id');
+        return $this->current_user_id;
     }
 
     /**
@@ -423,13 +423,21 @@ class TWP_Mobile_Auth {
         global $wpdb;
         $table = $wpdb->prefix . 'twp_mobile_sessions';
 
-        $wpdb->update(
-            $table,
-            array('fcm_token' => $fcm_token),
-            array('user_id' => $user_id, 'refresh_token' => $refresh_token, 'is_active' => 1),
-            array('%s'),
-            array('%d', '%s', '%d')
-        );
+        if (!empty($refresh_token)) {
+            $wpdb->update(
+                $table,
+                array('fcm_token' => $fcm_token),
+                array('user_id' => $user_id, 'refresh_token' => $refresh_token, 'is_active' => 1),
+                array('%s'),
+                array('%d', '%s', '%d')
+            );
+        } else {
+            // No refresh token — update the most recent active session for this user
+            $wpdb->query($wpdb->prepare(
+                "UPDATE $table SET fcm_token = %s WHERE user_id = %d AND is_active = 1 AND expires_at > NOW() ORDER BY created_at DESC LIMIT 1",
+                $fcm_token, $user_id
+            ));
+        }
     }
 
     /**

includes/class-twp-mobile-sse.php

@@ -26,14 +26,32 @@ class TWP_Mobile_SSE {
                 'callback' => array($this, 'stream_events'),
                 'permission_callback' => array($this->auth, 'verify_token')
             ));
+            register_rest_route('twilio-mobile/v1', '/stream/poll', array(
+                'methods' => 'GET',
+                'callback' => array($this, 'poll_state'),
+                'permission_callback' => array($this->auth, 'verify_token')
+            ));
         });
     }
 
+    /**
+     * Return current state as JSON (polling alternative to SSE)
+     */
+    public function poll_state($request) {
+        $user_id = $this->auth->get_current_user_id();
+        if (!$user_id) {
+            return new WP_Error('unauthorized', 'Invalid token', array('status' => 401));
+        }
+        return rest_ensure_response($this->get_current_state($user_id));
+    }
+
     /**
      * Stream events to mobile app
      */
     public function stream_events($request) {
+        error_log('TWP SSE: stream_events called');
         $user_id = $this->auth->get_current_user_id();
+        error_log('TWP SSE: user_id=' . ($user_id ?: 'false'));
 
         if (!$user_id) {
             return new WP_Error('unauthorized', 'Invalid token', array('status' => 401));
@@ -56,6 +74,15 @@ class TWP_Mobile_SSE {
             ob_end_flush();
         }
 
+        // Flush padding to overcome Apache/HTTP2 frame buffering.
+        // SSE comments (lines starting with ':') are ignored by clients.
+        // We send >4KB to ensure the first HTTP/2 DATA frame is flushed.
+        echo ':' . str_repeat(' ', 4096) . "\n\n";
+        if (ob_get_level() > 0) ob_flush();
+        flush();
+
+        error_log('TWP SSE: padding flushed, sending connected event');
+
         // Send initial connection event
         $this->send_event('connected', array('user_id' => $user_id, 'timestamp' => time()));
 
@@ -142,38 +169,40 @@ class TWP_Mobile_SSE {
         global $wpdb;
         $queues_table = $wpdb->prefix . 'twp_call_queues';
         $calls_table = $wpdb->prefix . 'twp_queued_calls';
-        $assignments_table = $wpdb->prefix . 'twp_queue_assignments';
+        $groups_table = $wpdb->prefix . 'twp_group_members';
 
-        // Get queue IDs
-        $queue_ids = $wpdb->get_col($wpdb->prepare(
-            "SELECT queue_id FROM $assignments_table WHERE user_id = %d",
+        // Auto-create personal queues if they don't exist
+        $extensions_table = $wpdb->prefix . 'twp_user_extensions';
+        $existing_extension = $wpdb->get_row($wpdb->prepare(
+            "SELECT extension FROM $extensions_table WHERE user_id = %d",
             $user_id
         ));
 
-        $personal_queue_ids = $wpdb->get_col($wpdb->prepare(
-            "SELECT id FROM $queues_table WHERE user_id = %d",
-            $user_id
-        ));
-
-        $all_queue_ids = array_unique(array_merge($queue_ids, $personal_queue_ids));
-
-        if (empty($all_queue_ids)) {
-            return array();
+        if (!$existing_extension) {
+            TWP_User_Queue_Manager::create_user_queues($user_id);
         }
 
-        $queue_ids_str = implode(',', array_map('intval', $all_queue_ids));
-
-        $queues = $wpdb->get_results("
-            SELECT
+        // Get queues where user is a member of the assigned agent group OR personal/hold queues
+        $queues = $wpdb->get_results($wpdb->prepare("
+            SELECT DISTINCT
                 q.id,
                 q.queue_name,
                 COUNT(c.id) as waiting_count,
                 MIN(c.enqueued_at) as oldest_call_time
             FROM $queues_table q
+            LEFT JOIN $groups_table gm ON gm.group_id = q.agent_group_id
             LEFT JOIN $calls_table c ON q.id = c.queue_id AND c.status = 'waiting'
-            WHERE q.id IN ($queue_ids_str)
+            WHERE (gm.user_id = %d AND gm.is_active = 1)
+               OR (q.user_id = %d AND q.queue_type IN ('personal', 'hold'))
             GROUP BY q.id
-        ");
+            ORDER BY
+                CASE
+                    WHEN q.queue_type = 'personal' THEN 1
+                    WHEN q.queue_type = 'hold' THEN 2
+                    ELSE 3
+                END,
+                q.queue_name ASC
+        ", $user_id, $user_id));
 
         $result = array();
         foreach ($queues as $queue) {

includes/class-twp-twilio-api.php

@@ -41,13 +41,28 @@ class TWP_Twilio_API {
      * Initialize Twilio SDK client
      */
     private function init_sdk_client() {
-        // Check if autoloader exists
-        $autoloader_path = TWP_PLUGIN_DIR . 'vendor/autoload.php';
-        if (!file_exists($autoloader_path)) {
-            error_log('TWP Plugin: Autoloader not found at: ' . $autoloader_path);
-            throw new Exception('Twilio SDK not found. Please run: ./install-twilio-sdk.sh');
+        // Check for SDK autoloader - external location first (survives plugin updates)
+        $autoloader_path = null;
+
+        // Priority 1: External SDK location (recommended)
+        $external_autoloader = TWP_EXTERNAL_SDK_DIR . 'autoload.php';
+        if (file_exists($external_autoloader)) {
+            $autoloader_path = $external_autoloader;
         }
-        
+
+        // Priority 2: Internal vendor directory (fallback)
+        if (!$autoloader_path) {
+            $internal_autoloader = TWP_PLUGIN_DIR . 'vendor/autoload.php';
+            if (file_exists($internal_autoloader)) {
+                $autoloader_path = $internal_autoloader;
+            }
+        }
+
+        if (!$autoloader_path) {
+            error_log('TWP Plugin: Autoloader not found. Checked: ' . $external_autoloader . ' and ' . TWP_PLUGIN_DIR . 'vendor/autoload.php');
+            throw new Exception('Twilio SDK not found. Please run: ./install-twilio-sdk-external.sh');
+        }
+
         // Load the autoloader
         require_once $autoloader_path;
         

includes/class-twp-webhooks.php

@@ -9,9 +9,25 @@ class TWP_Webhooks {
      */
     public function __construct() {
         // Load Twilio SDK if not already loaded
+        // Check external location first (survives plugin updates), then internal
         if (!class_exists('\Twilio\Rest\Client')) {
-            $autoloader_path = plugin_dir_path(dirname(__FILE__)) . 'vendor/autoload.php';
-            if (file_exists($autoloader_path)) {
+            $autoloader_path = null;
+
+            // Priority 1: External SDK location
+            $external_autoloader = dirname(dirname(plugin_dir_path(dirname(__FILE__)))) . '/twilio-sdk/autoload.php';
+            if (file_exists($external_autoloader)) {
+                $autoloader_path = $external_autoloader;
+            }
+
+            // Priority 2: Internal vendor directory
+            if (!$autoloader_path) {
+                $internal_autoloader = plugin_dir_path(dirname(__FILE__)) . 'vendor/autoload.php';
+                if (file_exists($internal_autoloader)) {
+                    $autoloader_path = $internal_autoloader;
+                }
+            }
+
+            if ($autoloader_path) {
                 require_once $autoloader_path;
             }
         }
@@ -313,7 +329,13 @@ class TWP_Webhooks {
      */
     public function handle_browser_voice($request) {
         $params = $request->get_params();
-        
+        error_log('TWP browser-voice webhook params: ' . json_encode(array(
+            'From' => $params['From'] ?? '',
+            'To' => $params['To'] ?? '',
+            'CallerId' => $params['CallerId'] ?? '',
+            'CallSid' => $params['CallSid'] ?? '',
+        )));
+
         $call_data = array(
             'CallSid' => isset($params['CallSid']) ? $params['CallSid'] : '',
             'From' => isset($params['From']) ? $params['From'] : '',
@@ -355,17 +377,45 @@ class TWP_Webhooks {
         
         if (isset($params['To']) && !empty($params['To'])) {
             $to_number = $params['To'];
-            $from_number = isset($params['From']) ? $params['From'] : '';
-            
+            // Mobile SDK sends From as identity (e.g. "agent2jknapp"), browser sends From as phone number
+            // Only use CallerId/From if it looks like a phone number (starts with + or is all digits)
+            $from_number = '';
+            if (!empty($params['CallerId']) && preg_match('/^\+?\d+$/', $params['CallerId'])) {
+                $from_number = $params['CallerId'];
+            } elseif (!empty($params['From']) && preg_match('/^\+?\d+$/', $params['From'])) {
+                $from_number = $params['From'];
+            }
+
+            // Fall back to default caller ID if no valid one provided
+            if (empty($from_number)) {
+                $from_number = get_option('twp_caller_id_number', '');
+            }
+            if (empty($from_number)) {
+                $from_number = get_option('twp_default_sms_number', '');
+            }
+            // Last resort: fetch first Twilio number from API
+            if (empty($from_number)) {
+                try {
+                    require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
+                    $twilio = new TWP_Twilio_API();
+                    $numbers = $twilio->get_phone_numbers();
+                    if (!empty($numbers['data']['incoming_phone_numbers'][0]['phone_number'])) {
+                        $from_number = $numbers['data']['incoming_phone_numbers'][0]['phone_number'];
+                    }
+                } catch (\Exception $e) {
+                    error_log('TWP browser-voice: failed to fetch default number: ' . $e->getMessage());
+                }
+            }
+
             // If it's an outgoing call to a phone number
             if (strpos($to_number, 'client:') !== 0) {
                 $twiml .= '<Dial timeout="30"';
-                
-                // Add caller ID if provided
-                if (!empty($from_number) && strpos($from_number, 'client:') !== 0) {
+
+                // Add caller ID (required for outbound calls to phone numbers)
+                if (!empty($from_number)) {
                     $twiml .= ' callerId="' . htmlspecialchars($from_number) . '"';
                 }
-                
+
                 $twiml .= '>';
                 $twiml .= '<Number>' . htmlspecialchars($to_number) . '</Number>';
                 $twiml .= '</Dial>';
@@ -378,9 +428,11 @@ class TWP_Webhooks {
         } else {
             $twiml .= '<Say voice="alice">No destination number provided.</Say>';
         }
-        
+
         $twiml .= '</Response>';
-        
+
+        error_log('TWP browser-voice TwiML: ' . $twiml);
+
         return $this->send_twiml_response($twiml);
     }
     
@@ -461,8 +513,15 @@ class TWP_Webhooks {
                 $twilio_api->send_sms($agent_phone, $message, $twilio_number);
             }
         }
+
+        // Send FCM push notifications for missed browser call
+        require_once dirname(__FILE__) . '/class-twp-fcm.php';
+        $fcm = new TWP_FCM();
+        foreach ($agents as $agent) {
+            $fcm->notify_incoming_call($agent->ID, $customer_number, 'Browser Phone', '');
+        }
     }
-    
+
     /**
      * Handle smart routing based on user preferences
      */
@@ -688,8 +747,15 @@ class TWP_Webhooks {
                 $twilio_api->send_sms($agent_phone, $message, $twilio_number);
             }
         }
+
+        // Send FCM push notifications for missed call
+        require_once dirname(__FILE__) . '/class-twp-fcm.php';
+        $fcm = new TWP_FCM();
+        foreach ($agents as $agent) {
+            $fcm->notify_incoming_call($agent->ID, $customer_number, 'General', '');
+        }
     }
-    
+
     /**
      * Verify Twilio signature
      */
@@ -878,11 +944,36 @@ class TWP_Webhooks {
         // Update call status in queue if applicable
         // Remove from queue for any terminal call state
         if (in_array($status_data['CallStatus'], ['completed', 'busy', 'failed', 'canceled', 'no-answer'])) {
+            // Get queue_id before removing so we can send cancel notifications
+            global $wpdb;
+            $calls_table = $wpdb->prefix . 'twp_queued_calls';
+            $queued_call = $wpdb->get_row($wpdb->prepare(
+                "SELECT queue_id FROM $calls_table WHERE call_sid = %s",
+                $status_data['CallSid']
+            ));
+
             $queue_removed = TWP_Call_Queue::remove_from_queue($status_data['CallSid']);
             if ($queue_removed) {
                 TWP_Call_Logger::log_action($status_data['CallSid'], 'Call removed from queue due to status: ' . $status_data['CallStatus']);
                 error_log('TWP Status Webhook: Removed call ' . $status_data['CallSid'] . ' from queue (status: ' . $status_data['CallStatus'] . ')');
+
+                // Cancel queue alert notifications on agents' devices
+                if ($queued_call) {
+                    require_once plugin_dir_path(__FILE__) . 'class-twp-fcm.php';
+                    $fcm = new TWP_FCM();
+                    $fcm->cancel_queue_alert_for_queue($queued_call->queue_id, $status_data['CallSid']);
+                }
             }
+
+            // Set auto_busy_at for agents whose call just ended, so they revert after 30s
+            $agent_status_table = $wpdb->prefix . 'twp_agent_status';
+            $wpdb->query($wpdb->prepare(
+                "UPDATE $agent_status_table
+                 SET auto_busy_at = %s, current_call_sid = NULL
+                 WHERE current_call_sid = %s AND status = 'busy'",
+                current_time('mysql'),
+                $status_data['CallSid']
+            ));
         }
         
         // Empty response

install-twilio-sdk-external.sh

@@ -0,0 +1,158 @@
+#!/bin/bash
+
+# Script to install Twilio PHP SDK to an external location
+# This prevents SDK from being deleted when WordPress updates the plugin
+#
+# Location: wp-content/twilio-sdk/ (outside plugin folder)
+
+echo "Installing Twilio PHP SDK v8.7.0 to external location..."
+echo "This will install the SDK outside the plugin folder to survive plugin updates."
+
+# Check if we can download files
+if ! command -v curl &> /dev/null; then
+    echo "ERROR: curl is required to download the SDK"
+    echo "Please install curl and try again"
+    exit 1
+fi
+
+if ! command -v tar &> /dev/null; then
+    echo "ERROR: tar is required to extract the SDK"
+    echo "Please install tar and try again"
+    exit 1
+fi
+
+# Get the script directory (plugin directory)
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Calculate wp-content directory (two levels up from plugin)
+# Plugin is at: wp-content/plugins/twilio-wp-plugin/
+# We want: wp-content/twilio-sdk/
+WP_CONTENT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+SDK_DIR="$WP_CONTENT_DIR/twilio-sdk"
+
+echo "Plugin directory: $SCRIPT_DIR"
+echo "SDK will be installed to: $SDK_DIR"
+
+# Create SDK directory
+mkdir -p "$SDK_DIR/twilio/sdk"
+
+# Download the latest release (8.7.0)
+echo "Downloading Twilio SDK from GitHub..."
+TEMP_DIR=$(mktemp -d)
+cd "$TEMP_DIR"
+
+if ! curl -L https://github.com/twilio/twilio-php/archive/refs/tags/8.7.0.tar.gz -o twilio-sdk.tar.gz; then
+    echo "ERROR: Failed to download Twilio SDK"
+    echo "Please check your internet connection and try again"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Extract the archive
+echo "Extracting SDK files..."
+if ! tar -xzf twilio-sdk.tar.gz; then
+    echo "ERROR: Failed to extract SDK files"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Check if the extracted directory exists
+if [ ! -d "twilio-php-8.7.0/src" ]; then
+    echo "ERROR: Extracted SDK directory structure is unexpected"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Remove existing SDK if it exists
+if [ -d "$SDK_DIR/twilio/sdk" ]; then
+    echo "Removing existing SDK installation..."
+    rm -rf "$SDK_DIR/twilio/sdk"
+    mkdir -p "$SDK_DIR/twilio/sdk"
+fi
+
+# Move the entire src directory to be the sdk
+echo "Installing SDK files..."
+if ! mv twilio-php-8.7.0/src/* "$SDK_DIR/twilio/sdk/"; then
+    echo "ERROR: Failed to move SDK files"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Create a comprehensive autoloader
+cat > "$SDK_DIR/autoload.php" << 'EOF'
+<?php
+/**
+ * Twilio SDK v8.7.0 Autoloader (External Installation)
+ * This file loads the Twilio PHP SDK classes
+ *
+ * Location: wp-content/twilio-sdk/autoload.php
+ * This location survives WordPress plugin updates
+ */
+
+// Prevent multiple registrations
+if (!defined('TWILIO_AUTOLOADER_REGISTERED')) {
+    define('TWILIO_AUTOLOADER_REGISTERED', true);
+
+    // Register the autoloader
+    spl_autoload_register(function ($class) {
+        // Only handle Twilio classes
+        if (strpos($class, 'Twilio\\') !== 0) {
+            return false;
+        }
+
+        // Convert class name to file path
+        // The SDK structure is: twilio/sdk/Twilio/Rest/Client.php for Twilio\Rest\Client
+        $file = __DIR__ . '/twilio/sdk/' . str_replace('\\', '/', $class) . '.php';
+
+        if (file_exists($file)) {
+            require_once $file;
+            return true;
+        }
+
+        return false;
+    });
+
+    // Try to load the SDK's own autoloader if it exists
+    $sdk_autoloader = __DIR__ . '/twilio/sdk/autoload.php';
+    if (file_exists($sdk_autoloader)) {
+        require_once $sdk_autoloader;
+    }
+
+    // Load essential Twilio classes manually to ensure they're available
+    $essential_classes = [
+        __DIR__ . '/twilio/sdk/Twilio/Rest/Client.php',
+        __DIR__ . '/twilio/sdk/Twilio/TwiML/VoiceResponse.php',
+        __DIR__ . '/twilio/sdk/Twilio/Exceptions/TwilioException.php',
+        __DIR__ . '/twilio/sdk/Twilio/Security/RequestValidator.php'
+    ];
+
+    foreach ($essential_classes as $class_file) {
+        if (file_exists($class_file)) {
+            require_once $class_file;
+        }
+    }
+}
+EOF
+
+# Clean up temp directory
+cd "$SCRIPT_DIR"
+rm -rf "$TEMP_DIR"
+
+# Verify installation
+echo ""
+echo "Verifying installation..."
+if [ -f "$SDK_DIR/autoload.php" ] && [ -d "$SDK_DIR/twilio/sdk" ]; then
+    echo "=============================================="
+    echo "Twilio SDK v8.7.0 installed successfully!"
+    echo "=============================================="
+    echo ""
+    echo "Installation location: $SDK_DIR"
+    echo ""
+    echo "This SDK is installed OUTSIDE the plugin folder,"
+    echo "so it will NOT be deleted when WordPress updates the plugin."
+    echo ""
+    echo "The plugin will automatically detect this external SDK."
+else
+    echo "Installation failed - files not found"
+    exit 1
+fi

install-twilio-sdk.sh

@@ -77,16 +77,16 @@ if (!defined('TWILIO_AUTOLOADER_REGISTERED')) {
         if (strpos($class, 'Twilio\\') !== 0) {
             return false;
         }
-        
+
         // Convert class name to file path
-        $relative_class = substr($class, 7); // Remove 'Twilio\'
-        $file = __DIR__ . '/twilio/sdk/' . str_replace('\\', '/', $relative_class) . '.php';
-        
+        // The SDK structure is: twilio/sdk/Twilio/Rest/Client.php for Twilio\Rest\Client
+        $file = __DIR__ . '/twilio/sdk/' . str_replace('\\', '/', $class) . '.php';
+
         if (file_exists($file)) {
             require_once $file;
             return true;
         }
-        
+
         return false;
     });
     
@@ -98,10 +98,10 @@ if (!defined('TWILIO_AUTOLOADER_REGISTERED')) {
     
     // Load essential Twilio classes manually to ensure they're available
     $essential_classes = [
-        __DIR__ . '/twilio/sdk/Rest/Client.php',
-        __DIR__ . '/twilio/sdk/TwiML/VoiceResponse.php',
-        __DIR__ . '/twilio/sdk/Exceptions/TwilioException.php',
-        __DIR__ . '/twilio/sdk/Security/RequestValidator.php'
+        __DIR__ . '/twilio/sdk/Twilio/Rest/Client.php',
+        __DIR__ . '/twilio/sdk/Twilio/TwiML/VoiceResponse.php',
+        __DIR__ . '/twilio/sdk/Twilio/Exceptions/TwilioException.php',
+        __DIR__ . '/twilio/sdk/Twilio/Security/RequestValidator.php'
     ];
     
     foreach ($essential_classes as $class_file) {

mobile/.gitignore

@@ -0,0 +1,45 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+/coverage/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

mobile/.metadata

@@ -0,0 +1,45 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "ff37bef603469fb030f2b72995ab929ccfc227f0"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: android
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: ios
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: linux
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: macos
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: web
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: windows
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

mobile/README.md

@@ -0,0 +1,176 @@
+# TWP Softphone — Mobile App
+
+Flutter-based VoIP softphone client for the Twilio WordPress Plugin. Uses the Twilio Voice SDK (WebRTC) to make and receive calls via the Android Telecom framework.
+
+## Requirements
+
+- Flutter 3.29+ (tested with 3.41.4)
+- Android device/tablet (API 26+)
+- TWP WordPress plugin installed and configured on server
+- Twilio account with Voice capability
+
+## Quick Start
+
+```bash
+cd mobile
+flutter pub get
+flutter build apk --debug
+adb install build/app/outputs/flutter-apk/app-debug.apk
+```
+
+## Server Setup
+
+The app connects to your WordPress site running the TWP plugin. The server must have:
+
+1. **TWP Plugin** installed and activated
+2. **Twilio credentials** configured (Account SID, Auth Token)
+3. **At least one Twilio phone number** purchased
+4. **A WordPress user** with agent permissions
+
+### SSE (Server-Sent Events) — Apache + PHP-FPM
+
+The app uses SSE for real-time updates (queue changes, agent status). On Apache with PHP-FPM, `mod_proxy_fcgi` buffers output by default, which breaks SSE streaming.
+
+**Fix** — Create a config file on the web server:
+
+```bash
+echo 'ProxyPassMatch "^/wp-json/twilio-mobile/v1/stream/events$" "unix:/run/php-fpm/www.sock|fcgi://localhost/path/to/wordpress/index.php" flushpackets=on' > /etc/httpd/conf.d/twp-sse.conf
+httpd -t && systemctl restart httpd
+```
+
+> **Adjust the paths:**
+> - Socket path must match your PHP-FPM config (check `grep fcgi /etc/httpd/conf.d/php.conf`)
+> - Document root must match your WordPress installation path
+
+**Diagnosis** — If the green connection dot stays red:
+
+```bash
+# Check current PHP-FPM proxy config
+grep -r "fcgi\|php-fpm" /etc/httpd/conf.d/
+
+# Check if flushpackets is configured
+grep -r "flushpackets" /etc/httpd/conf.d/
+
+# Test SSE endpoint (should stream data continuously, not hang)
+curl -N -H "Authorization: Bearer YOUR_TOKEN" \
+  https://your-site.com/wp-json/twilio-mobile/v1/stream/events
+```
+
+**Notes:**
+- `flushpackets=on` is a `ProxyPassMatch` directive — it **cannot** go in `.htaccess`
+- If using **nginx** instead of Apache, the `X-Accel-Buffering: no` header (already in the PHP code) handles this automatically
+- The app automatically falls back to 5-second polling if SSE fails, so the app still works without this config — just with higher latency
+
+## App Setup (Android)
+
+### First Launch
+
+1. Open the app and enter your server URL (e.g., `https://phone.cloud-hosting.io`)
+2. Log in with your WordPress credentials
+3. Grant permissions when prompted:
+   - Microphone (required for calls)
+   - Phone/Call (required for Android Telecom integration)
+
+### Phone Account
+
+Android requires a registered and **enabled** phone account for VoIP apps. The app registers automatically, but enabling must be done manually:
+
+1. If prompted, tap **"Open Settings"** to go to Android's Phone Account settings
+2. Find **"TWP Softphone"** in the list and toggle it **ON**
+3. Return to the app
+
+If you skipped this step, tap the orange warning card on the dashboard.
+
+> **Path:** Settings → Apps → Default apps → Phone → Calling accounts → TWP Softphone
+
+### Making Calls
+
+1. Tap the phone FAB (bottom right) to open the dialer
+2. Enter the phone number
+3. Caller ID is auto-selected from your Twilio numbers
+4. Tap **Call** — the Android system call screen (InCallUI) handles the active call
+
+### Receiving Calls
+
+Incoming calls appear via Android's native call UI. Answer/reject using the standard Android interface.
+
+> **Note:** FCM push notifications are required for receiving calls when the app is in the background. This requires `google-services.json` in `android/app/`.
+
+### Queue Management
+
+- View assigned queues on the dashboard
+- Tap a queue with waiting calls to see callers
+- Tap **Accept** to take a call from the queue
+
+### Agent Status
+
+Toggle between **Available**, **Busy**, and **Offline** using the status bar at the top of the dashboard.
+
+## Development
+
+### Project Structure
+
+```
+lib/
+├── config/          # App configuration
+├── models/          # Data models (CallInfo, QueueState, AgentStatus, User)
+├── providers/       # State management (AuthProvider, CallProvider, AgentProvider)
+├── screens/         # UI screens (Login, Dashboard, Settings, ActiveCall)
+├── services/        # API/SDK services (VoiceService, SseService, ApiClient, AuthService)
+├── widgets/         # Reusable widgets (Dialpad, QueueCard, AgentStatusToggle)
+└── main.dart        # App entry point
+```
+
+### Running Tests
+
+```bash
+flutter test
+```
+
+34 tests covering CallInfo, QueueState, and CallProvider.
+
+### Building
+
+```bash
+# Debug APK
+flutter build apk --debug
+
+# Release APK (requires signing config)
+flutter build apk --release
+```
+
+### ADB Deployment (WiFi)
+
+```bash
+# Connect to device
+adb connect DEVICE_IP:PORT
+
+# Install
+adb install -r build/app/outputs/flutter-apk/app-debug.apk
+
+# Launch
+adb shell am start -n io.cloudhosting.twp.twp_softphone/.MainActivity
+
+# View logs
+adb logcat -s flutter
+```
+
+### Key Dependencies
+
+| Package | Purpose |
+|---------|---------|
+| `twilio_voice` | Twilio Voice SDK (WebRTC calling) |
+| `provider` | State management |
+| `dio` | HTTP client (REST API, SSE) |
+| `firebase_messaging` | FCM push for incoming calls |
+| `flutter_secure_storage` | Secure token storage |
+
+## Troubleshooting
+
+| Problem | Solution |
+|---------|----------|
+| Green dot stays red | SSE buffering — see [Server Setup](#sse-server-sent-events--apache--php-fpm) |
+| "No registered phone account" | Enable phone account in Android Settings (see [Phone Account](#phone-account)) |
+| Calls fail with "Invalid callerId" | Server webhook needs phone number validation — check `handle_browser_voice` in `class-twp-webhooks.php` |
+| App hangs on login | Check server is reachable: `curl https://your-site.com/wp-json/twilio-mobile/v1/auth/login` |
+| No incoming calls | Ensure FCM is configured (`google-services.json`) and phone account is enabled |

mobile/analysis_options.yaml

@@ -0,0 +1,7 @@
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  rules:
+    prefer_const_constructors: true
+    prefer_const_declarations: true
+    avoid_print: true

mobile/android/app/build.gradle

@@ -0,0 +1,49 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    id "dev.flutter.flutter-gradle-plugin"
+    id "com.google.gms.google-services"
+}
+
+android {
+    namespace = "io.cloudhosting.twp.twp_softphone"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        coreLibraryDesugaringEnabled true
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_11
+    }
+
+    defaultConfig {
+        applicationId = "io.cloudhosting.twp.twp_softphone"
+        minSdkVersion 26
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+        multiDexEnabled true
+    }
+
+    buildTypes {
+        release {
+            signingConfig = signingConfigs.debug
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}
+
+dependencies {
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.1.4'
+    implementation platform('com.google.firebase:firebase-bom:33.0.0')
+    implementation 'com.google.firebase:firebase-messaging'
+}

mobile/android/app/google-services.json

@@ -0,0 +1,29 @@
+{
+  "project_info": {
+    "project_number": "187457540438",
+    "project_id": "twp-softphone",
+    "storage_bucket": "twp-softphone.firebasestorage.app"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:187457540438:android:d6d777270c23f6660946f7",
+        "android_client_info": {
+          "package_name": "io.cloudhosting.twp.twp_softphone"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyAdGJrWPy9b9arqHnlY5G_hsGiDcm6cchA"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

mobile/android/app/proguard-rules.pro

@@ -0,0 +1,9 @@
+# Twilio Voice SDK
+-keep class com.twilio.** { *; }
+-keep class tvo.webrtc.** { *; }
+
+# Firebase
+-keep class com.google.firebase.** { *; }
+
+# Flutter
+-keep class io.flutter.** { *; }

mobile/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

mobile/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,74 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- Audio/Phone permissions for VoIP -->
+    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
+    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
+    <uses-permission android:name="android.permission.BLUETOOTH"/>
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT"/>
+
+    <!-- Foreground service for active calls -->
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_PHONE_CALL"/>
+
+    <!-- Full screen intent for incoming calls on lock screen -->
+    <uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.MANAGE_OWN_CALLS"/>
+
+    <!-- Push notifications -->
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+
+    <!-- Internet -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+
+    <application
+        android:label="TWP Softphone"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTop"
+            android:taskAffinity=""
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize"
+            android:showOnLockScreen="true"
+            android:turnScreenOn="true">
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+            <!-- FCM click action -->
+            <intent-filter>
+                <action android:name="FLUTTER_NOTIFICATION_CLICK"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+        </activity>
+        <!-- Twilio Voice FCM handler — must have higher priority than Flutter's default -->
+        <service
+            android:name="com.twilio.twilio_voice.fcm.VoiceFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter android:priority="10">
+                <action android:name="com.google.firebase.MESSAGING_EVENT" />
+            </intent-filter>
+        </service>
+
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>

mobile/android/app/src/main/java/io/cloudhosting/twp/twp_softphone/MainActivity.kt

@@ -0,0 +1,5 @@
+package io.cloudhosting.twp.twp_softphone
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity()

mobile/android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java

@@ -0,0 +1,49 @@
+package io.flutter.plugins;
+
+import androidx.annotation.Keep;
+import androidx.annotation.NonNull;
+import io.flutter.Log;
+
+import io.flutter.embedding.engine.FlutterEngine;
+
+/**
+ * Generated file. Do not edit.
+ * This file is generated by the Flutter tool based on the
+ * plugins that support the Android platform.
+ */
+@Keep
+public final class GeneratedPluginRegistrant {
+  private static final String TAG = "GeneratedPluginRegistrant";
+  public static void registerWith(@NonNull FlutterEngine flutterEngine) {
+    try {
+      flutterEngine.getPlugins().add(new io.flutter.plugins.firebase.core.FlutterFirebaseCorePlugin());
+    } catch (Exception e) {
+      Log.e(TAG, "Error registering plugin firebase_core, io.flutter.plugins.firebase.core.FlutterFirebaseCorePlugin", e);
+    }
+    try {
+      flutterEngine.getPlugins().add(new io.flutter.plugins.firebase.messaging.FlutterFirebaseMessagingPlugin());
+    } catch (Exception e) {
+      Log.e(TAG, "Error registering plugin firebase_messaging, io.flutter.plugins.firebase.messaging.FlutterFirebaseMessagingPlugin", e);
+    }
+    try {
+      flutterEngine.getPlugins().add(new com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin());
+    } catch (Exception e) {
+      Log.e(TAG, "Error registering plugin flutter_local_notifications, com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin", e);
+    }
+    try {
+      flutterEngine.getPlugins().add(new com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin());
+    } catch (Exception e) {
+      Log.e(TAG, "Error registering plugin flutter_secure_storage, com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin", e);
+    }
+    try {
+      flutterEngine.getPlugins().add(new io.flutter.plugins.pathprovider.PathProviderPlugin());
+    } catch (Exception e) {
+      Log.e(TAG, "Error registering plugin path_provider_android, io.flutter.plugins.pathprovider.PathProviderPlugin", e);
+    }
+    try {
+      flutterEngine.getPlugins().add(new com.twilio.twilio_voice.TwilioVoicePlugin());
+    } catch (Exception e) {
+      Log.e(TAG, "Error registering plugin twilio_voice, com.twilio.twilio_voice.TwilioVoicePlugin", e);
+    }
+  }
+}

mobile/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">@android:color/white</item>
+    </style>
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">@android:color/white</item>
+    </style>
+</resources>

mobile/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

mobile/android/build.gradle

@@ -0,0 +1,18 @@
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = "../build"
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(":app")
+}
+
+tasks.register("clean", Delete) {
+    delete rootProject.buildDir
+}

mobile/android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx4G -XX:MaxMetaspaceSize=2G -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true
+android.enableJetifier=true

mobile/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-all.zip

mobile/android/settings.gradle

@@ -0,0 +1,26 @@
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "8.7.0" apply false
+    id "org.jetbrains.kotlin.android" version "2.1.0" apply false
+    id "com.google.gms.google-services" version "4.4.0" apply false
+}
+
+include ":app"

mobile/lib/app.dart

@@ -0,0 +1,65 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'services/api_client.dart';
+import 'providers/auth_provider.dart';
+import 'providers/agent_provider.dart';
+import 'providers/call_provider.dart';
+import 'screens/login_screen.dart';
+import 'screens/dashboard_screen.dart';
+
+class TwpSoftphoneApp extends StatefulWidget {
+  const TwpSoftphoneApp({super.key});
+
+  @override
+  State<TwpSoftphoneApp> createState() => _TwpSoftphoneAppState();
+}
+
+class _TwpSoftphoneAppState extends State<TwpSoftphoneApp> {
+  final _apiClient = ApiClient();
+
+  @override
+  Widget build(BuildContext context) {
+    return ChangeNotifierProvider(
+      create: (_) {
+        final auth = AuthProvider(_apiClient);
+        auth.tryRestoreSession();
+        return auth;
+      },
+      child: MaterialApp(
+        title: 'TWP Softphone',
+        debugShowCheckedModeBanner: false,
+        theme: ThemeData(
+          colorSchemeSeed: Colors.blue,
+          useMaterial3: true,
+          brightness: Brightness.light,
+        ),
+        darkTheme: ThemeData(
+          colorSchemeSeed: Colors.blue,
+          useMaterial3: true,
+          brightness: Brightness.dark,
+        ),
+        home: Consumer<AuthProvider>(
+          builder: (context, auth, _) {
+            if (auth.state == AuthState.authenticated) {
+              return MultiProvider(
+                providers: [
+                  ChangeNotifierProvider(
+                    create: (_) => AgentProvider(
+                      auth.apiClient,
+                      auth.sseService,
+                    )..refresh(),
+                  ),
+                  ChangeNotifierProvider(
+                    create: (_) => CallProvider(auth.voiceService),
+                  ),
+                ],
+                child: const DashboardScreen(),
+              );
+            }
+            return const LoginScreen();
+          },
+        ),
+      ),
+    );
+  }
+}

mobile/lib/config/app_config.dart

@@ -0,0 +1,8 @@
+class AppConfig {
+  static const String appName = 'TWP Softphone';
+  static const Duration tokenRefreshInterval = Duration(minutes: 50);
+  static const Duration sseReconnectBase = Duration(seconds: 2);
+  static const Duration sseMaxReconnect = Duration(seconds: 60);
+  static const int sseServerTimeout = 300; // server closes after 5 min
+  static const String defaultScheme = 'https';
+}

mobile/lib/main.dart

@@ -0,0 +1,9 @@
+import 'package:flutter/material.dart';
+import 'package:firebase_core/firebase_core.dart';
+import 'app.dart';
+
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  await Firebase.initializeApp();
+  runApp(const TwpSoftphoneApp());
+}

mobile/lib/models/agent_status.dart

@@ -0,0 +1,38 @@
+enum AgentStatusValue { available, busy, offline }
+
+class AgentStatus {
+  final AgentStatusValue status;
+  final bool isLoggedIn;
+  final String? currentCallSid;
+  final String? lastActivity;
+  final bool availableForQueues;
+
+  AgentStatus({
+    required this.status,
+    required this.isLoggedIn,
+    this.currentCallSid,
+    this.lastActivity,
+    this.availableForQueues = true,
+  });
+
+  factory AgentStatus.fromJson(Map<String, dynamic> json) {
+    return AgentStatus(
+      status: _parseStatus((json['status'] ?? 'offline') as String),
+      isLoggedIn: json['is_logged_in'] == true || json['is_logged_in'] == 1 || json['is_logged_in'] == '1',
+      currentCallSid: json['current_call_sid'] as String?,
+      lastActivity: json['last_activity'] as String?,
+      availableForQueues: json['available_for_queues'] != false && json['available_for_queues'] != 0 && json['available_for_queues'] != '0',
+    );
+  }
+
+  static AgentStatusValue _parseStatus(String s) {
+    switch (s) {
+      case 'available':
+        return AgentStatusValue.available;
+      case 'busy':
+        return AgentStatusValue.busy;
+      default:
+        return AgentStatusValue.offline;
+    }
+  }
+}

mobile/lib/models/call_info.dart

@@ -0,0 +1,46 @@
+enum CallState { idle, ringing, connecting, connected, disconnected }
+
+class CallInfo {
+  final CallState state;
+  final String? callSid;
+  final String? callerNumber;
+  final Duration duration;
+  final bool isMuted;
+  final bool isSpeakerOn;
+  final bool isOnHold;
+
+  const CallInfo({
+    this.state = CallState.idle,
+    this.callSid,
+    this.callerNumber,
+    this.duration = Duration.zero,
+    this.isMuted = false,
+    this.isSpeakerOn = false,
+    this.isOnHold = false,
+  });
+
+  CallInfo copyWith({
+    CallState? state,
+    String? callSid,
+    String? callerNumber,
+    Duration? duration,
+    bool? isMuted,
+    bool? isSpeakerOn,
+    bool? isOnHold,
+  }) {
+    return CallInfo(
+      state: state ?? this.state,
+      callSid: callSid ?? this.callSid,
+      callerNumber: callerNumber ?? this.callerNumber,
+      duration: duration ?? this.duration,
+      isMuted: isMuted ?? this.isMuted,
+      isSpeakerOn: isSpeakerOn ?? this.isSpeakerOn,
+      isOnHold: isOnHold ?? this.isOnHold,
+    );
+  }
+
+  bool get isActive =>
+      state == CallState.ringing ||
+      state == CallState.connecting ||
+      state == CallState.connected;
+}

mobile/lib/models/queue_state.dart

@@ -0,0 +1,66 @@
+class QueueInfo {
+  final int id;
+  final String name;
+  final String type;
+  final String? extension;
+  final int waitingCount;
+
+  QueueInfo({
+    required this.id,
+    required this.name,
+    required this.type,
+    this.extension,
+    required this.waitingCount,
+  });
+
+  factory QueueInfo.fromJson(Map<String, dynamic> json) {
+    return QueueInfo(
+      id: _toInt(json['id']),
+      name: (json['name'] ?? '') as String,
+      type: (json['type'] ?? '') as String,
+      extension: json['extension'] as String?,
+      waitingCount: _toInt(json['waiting_count']),
+    );
+  }
+
+  static int _toInt(dynamic value) {
+    if (value is int) return value;
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
+}
+
+class QueueCall {
+  final String callSid;
+  final String fromNumber;
+  final String toNumber;
+  final int position;
+  final String status;
+  final int waitTime;
+
+  QueueCall({
+    required this.callSid,
+    required this.fromNumber,
+    required this.toNumber,
+    required this.position,
+    required this.status,
+    required this.waitTime,
+  });
+
+  factory QueueCall.fromJson(Map<String, dynamic> json) {
+    return QueueCall(
+      callSid: (json['call_sid'] ?? '') as String,
+      fromNumber: (json['from_number'] ?? '') as String,
+      toNumber: (json['to_number'] ?? '') as String,
+      position: _toInt(json['position']),
+      status: (json['status'] ?? '') as String,
+      waitTime: _toInt(json['wait_time']),
+    );
+  }
+
+  static int _toInt(dynamic value) {
+    if (value is int) return value;
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
+}

mobile/lib/models/user.dart

@@ -0,0 +1,28 @@
+class User {
+  final int id;
+  final String login;
+  final String displayName;
+  final String? email;
+
+  User({
+    required this.id,
+    required this.login,
+    required this.displayName,
+    this.email,
+  });
+
+  factory User.fromJson(Map<String, dynamic> json) {
+    return User(
+      id: _toInt(json['user_id']),
+      login: (json['user_login'] ?? '') as String,
+      displayName: (json['display_name'] ?? '') as String,
+      email: json['email'] as String?,
+    );
+  }
+
+  static int _toInt(dynamic value) {
+    if (value is int) return value;
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
+}

mobile/lib/providers/agent_provider.dart

@@ -0,0 +1,132 @@
+import 'dart:async';
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import '../models/agent_status.dart';
+import '../models/queue_state.dart';
+import '../services/api_client.dart';
+import '../services/sse_service.dart';
+
+class PhoneNumber {
+  final String phoneNumber;
+  final String friendlyName;
+  PhoneNumber({required this.phoneNumber, required this.friendlyName});
+  factory PhoneNumber.fromJson(Map<String, dynamic> json) => PhoneNumber(
+    phoneNumber: json['phone_number'] as String,
+    friendlyName: json['friendly_name'] as String,
+  );
+}
+
+class AgentProvider extends ChangeNotifier {
+  final ApiClient _api;
+  final SseService _sse;
+
+  AgentStatus? _status;
+  List<QueueInfo> _queues = [];
+  bool _sseConnected = false;
+  List<PhoneNumber> _phoneNumbers = [];
+  StreamSubscription? _sseSub;
+  StreamSubscription? _connSub;
+  Timer? _refreshTimer;
+
+  AgentStatus? get status => _status;
+  List<QueueInfo> get queues => _queues;
+  bool get sseConnected => _sseConnected;
+  List<PhoneNumber> get phoneNumbers => _phoneNumbers;
+
+  AgentProvider(this._api, this._sse) {
+    _connSub = _sse.connectionState.listen((connected) {
+      _sseConnected = connected;
+      notifyListeners();
+    });
+
+    _sseSub = _sse.events.listen(_handleSseEvent);
+
+    _refreshTimer = Timer.periodic(
+      const Duration(seconds: 15),
+      (_) => fetchQueues(),
+    );
+  }
+
+  Future<void> fetchStatus() async {
+    try {
+      final response = await _api.dio.get('/agent/status');
+      _status = AgentStatus.fromJson(response.data);
+      notifyListeners();
+    } catch (e) {
+      debugPrint('AgentProvider.fetchStatus error: $e');
+      if (e is DioException) debugPrint('  response: ${e.response?.data}');
+    }
+  }
+
+  Future<void> updateStatus(AgentStatusValue newStatus) async {
+    final statusStr = newStatus.name;
+    try {
+      await _api.dio.post('/agent/status', data: {
+        'status': statusStr,
+        'is_logged_in': true,
+      });
+      _status = AgentStatus(
+        status: newStatus,
+        isLoggedIn: true,
+        currentCallSid: _status?.currentCallSid,
+      );
+      notifyListeners();
+    } catch (e) {
+      debugPrint('AgentProvider.updateStatus error: $e');
+      if (e is DioException) {
+        debugPrint('AgentProvider.updateStatus response: ${e.response?.data}');
+      }
+    }
+  }
+
+  Future<void> fetchQueues() async {
+    try {
+      final response = await _api.dio.get('/queues/state');
+      final data = response.data;
+      _queues = (data['queues'] as List)
+          .map((q) => QueueInfo.fromJson(q as Map<String, dynamic>))
+          .toList();
+      notifyListeners();
+    } catch (e) {
+      debugPrint('AgentProvider.fetchQueues error: $e');
+      if (e is DioException) debugPrint('  response: ${e.response?.data}');
+    }
+  }
+
+  Future<void> fetchPhoneNumbers() async {
+    try {
+      final response = await _api.dio.get('/phone-numbers');
+      final data = response.data;
+      _phoneNumbers = (data['phone_numbers'] as List)
+          .map((p) => PhoneNumber.fromJson(p as Map<String, dynamic>))
+          .toList();
+      notifyListeners();
+    } catch (e) {
+      debugPrint('AgentProvider.fetchPhoneNumbers error: $e');
+    }
+  }
+
+  Future<void> refresh() async {
+    await Future.wait([fetchStatus(), fetchQueues(), fetchPhoneNumbers()]);
+  }
+
+  void _handleSseEvent(SseEvent event) {
+    switch (event.event) {
+      case 'call_enqueued':
+      case 'call_dequeued':
+        fetchQueues();
+        break;
+      case 'agent_status_changed':
+        fetchStatus();
+        break;
+    }
+  }
+
+  @override
+  void dispose() {
+    _refreshTimer?.cancel();
+    _sseSub?.cancel();
+    _connSub?.cancel();
+    super.dispose();
+  }
+}

mobile/lib/providers/auth_provider.dart

@@ -0,0 +1,122 @@
+import 'package:flutter/foundation.dart';
+import '../models/user.dart';
+import '../services/api_client.dart';
+import '../services/auth_service.dart';
+import '../services/voice_service.dart';
+import '../services/push_notification_service.dart';
+import '../services/sse_service.dart';
+
+enum AuthState { unauthenticated, authenticating, authenticated }
+
+class AuthProvider extends ChangeNotifier {
+  final ApiClient _apiClient;
+  late AuthService _authService;
+  late VoiceService _voiceService;
+  late PushNotificationService _pushService;
+  late SseService _sseService;
+
+  AuthState _state = AuthState.unauthenticated;
+  User? _user;
+  String? _error;
+
+  AuthState get state => _state;
+  User? get user => _user;
+  String? get error => _error;
+  VoiceService get voiceService => _voiceService;
+  SseService get sseService => _sseService;
+  ApiClient get apiClient => _apiClient;
+
+  AuthProvider(this._apiClient) {
+    _authService = AuthService(_apiClient);
+    _voiceService = VoiceService(_apiClient);
+    _pushService = PushNotificationService(_apiClient);
+    _sseService = SseService(_apiClient);
+
+    _apiClient.onForceLogout = _handleForceLogout;
+  }
+
+  Future<void> tryRestoreSession() async {
+    final user = await _authService.tryRestoreSession();
+    if (user != null) {
+      _user = user;
+      _state = AuthState.authenticated;
+      await _initializeServices();
+      notifyListeners();
+    }
+  }
+
+  Future<void> login(String serverUrl, String username, String password) async {
+    _state = AuthState.authenticating;
+    _error = null;
+    notifyListeners();
+
+    try {
+      _user = await _authService.login(serverUrl, username, password);
+      _state = AuthState.authenticated;
+      await _initializeServices();
+    } catch (e) {
+      _state = AuthState.unauthenticated;
+      _error = e.toString().replaceFirst('Exception: ', '');
+    }
+    notifyListeners();
+  }
+
+  Future<void> _initializeServices() async {
+    try {
+      await _pushService.initialize();
+    } catch (e) {
+      debugPrint('AuthProvider: push service init error: $e');
+    }
+    try {
+      await _voiceService.initialize(deviceToken: _pushService.fcmToken);
+    } catch (e) {
+      debugPrint('AuthProvider: voice service init error: $e');
+    }
+    try {
+      await _sseService.connect();
+    } catch (e) {
+      debugPrint('AuthProvider: SSE connect error: $e');
+    }
+  }
+
+  Future<void> logout() async {
+    _voiceService.dispose();
+    _sseService.disconnect();
+    await _authService.logout();
+
+    _state = AuthState.unauthenticated;
+    _user = null;
+    _error = null;
+
+    // Re-create services for potential re-login
+    _voiceService = VoiceService(_apiClient);
+    _pushService = PushNotificationService(_apiClient);
+    _sseService = SseService(_apiClient);
+
+    notifyListeners();
+  }
+
+  void _handleForceLogout() {
+    _voiceService.dispose();
+    _sseService.disconnect();
+
+    _state = AuthState.unauthenticated;
+    _user = null;
+    _error = 'Session expired. Please log in again.';
+
+    // Re-create services for potential re-login
+    _voiceService = VoiceService(_apiClient);
+    _pushService = PushNotificationService(_apiClient);
+    _sseService = SseService(_apiClient);
+
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    _authService.dispose();
+    _voiceService.dispose();
+    _sseService.dispose();
+    super.dispose();
+  }
+}

mobile/lib/providers/call_provider.dart

@@ -0,0 +1,180 @@
+import 'dart:async';
+import 'package:flutter/foundation.dart';
+import 'package:twilio_voice/twilio_voice.dart';
+import '../models/call_info.dart';
+import '../services/voice_service.dart';
+
+class CallProvider extends ChangeNotifier {
+  final VoiceService _voiceService;
+  CallInfo _callInfo = const CallInfo();
+  Timer? _durationTimer;
+  StreamSubscription? _eventSub;
+  DateTime? _connectedAt;
+  bool _pendingAutoAnswer = false;
+
+  CallInfo get callInfo => _callInfo;
+
+  CallProvider(this._voiceService) {
+    _eventSub = _voiceService.callEvents.listen(_handleCallEvent);
+  }
+
+  void _handleCallEvent(CallEvent event) {
+    switch (event) {
+      case CallEvent.incoming:
+        if (_pendingAutoAnswer) {
+          _pendingAutoAnswer = false;
+          _callInfo = _callInfo.copyWith(state: CallState.connecting);
+          _voiceService.answer();
+        } else {
+          _callInfo = _callInfo.copyWith(state: CallState.ringing);
+        }
+        break;
+      case CallEvent.ringing:
+        _callInfo = _callInfo.copyWith(state: CallState.connecting);
+        break;
+      case CallEvent.connected:
+        _connectedAt = DateTime.now();
+        _callInfo = _callInfo.copyWith(state: CallState.connected);
+        _startDurationTimer();
+        break;
+      case CallEvent.callEnded:
+        _stopDurationTimer();
+        _callInfo = const CallInfo(); // reset to idle
+        break;
+      case CallEvent.returningCall:
+        _callInfo = _callInfo.copyWith(state: CallState.connecting);
+        break;
+      case CallEvent.reconnecting:
+        break;
+      case CallEvent.reconnected:
+        break;
+      default:
+        break;
+    }
+
+    // Update caller info from active call (skip if call just ended)
+    if (_callInfo.state != CallState.idle) {
+      final call = TwilioVoice.instance.call;
+      final active = call.activeCall;
+      if (active != null) {
+        if (_callInfo.callerNumber == null) {
+          _callInfo = _callInfo.copyWith(
+            callerNumber: active.from,
+          );
+        }
+        // Fetch SID asynchronously
+        call.getSid().then((sid) {
+          if (sid != null && sid != _callInfo.callSid && _callInfo.isActive) {
+            _callInfo = _callInfo.copyWith(callSid: sid);
+            notifyListeners();
+          }
+        });
+      }
+    }
+
+    notifyListeners();
+  }
+
+  void _startDurationTimer() {
+    _durationTimer?.cancel();
+    _durationTimer = Timer.periodic(const Duration(seconds: 1), (_) {
+      if (_connectedAt != null) {
+        _callInfo = _callInfo.copyWith(
+          duration: DateTime.now().difference(_connectedAt!),
+        );
+        notifyListeners();
+      }
+    });
+  }
+
+  void _stopDurationTimer() {
+    _durationTimer?.cancel();
+    _connectedAt = null;
+  }
+
+  Future<void> answer() => _voiceService.answer();
+  Future<void> reject() => _voiceService.reject();
+  Future<void> hangUp() async {
+    await _voiceService.hangUp();
+    // If SDK didn't fire callEnded (e.g. no active SDK call), reset manually
+    if (_callInfo.state != CallState.idle) {
+      _stopDurationTimer();
+      _callInfo = const CallInfo();
+      _pendingAutoAnswer = false;
+      notifyListeners();
+    }
+  }
+
+  Future<void> toggleMute() async {
+    final newMuted = !_callInfo.isMuted;
+    await _voiceService.toggleMute(newMuted);
+    _callInfo = _callInfo.copyWith(isMuted: newMuted);
+    notifyListeners();
+  }
+
+  Future<void> toggleSpeaker() async {
+    final newSpeaker = !_callInfo.isSpeakerOn;
+    await _voiceService.toggleSpeaker(newSpeaker);
+    _callInfo = _callInfo.copyWith(isSpeakerOn: newSpeaker);
+    notifyListeners();
+  }
+
+  Future<void> sendDigits(String digits) => _voiceService.sendDigits(digits);
+
+  Future<void> makeCall(String number, {String? callerId}) async {
+    _callInfo = _callInfo.copyWith(
+      state: CallState.connecting,
+      callerNumber: number,
+    );
+    notifyListeners();
+    final success = await _voiceService.makeCall(number, callerId: callerId);
+    if (!success) {
+      debugPrint('CallProvider.makeCall: call.place() returned false');
+      _callInfo = const CallInfo(); // reset to idle
+      notifyListeners();
+    }
+  }
+
+  Future<void> holdCall() async {
+    final sid = _callInfo.callSid;
+    if (sid == null) return;
+    await _voiceService.holdCall(sid);
+    _callInfo = _callInfo.copyWith(isOnHold: true);
+    notifyListeners();
+  }
+
+  Future<void> unholdCall() async {
+    final sid = _callInfo.callSid;
+    if (sid == null) return;
+    await _voiceService.unholdCall(sid);
+    _callInfo = _callInfo.copyWith(isOnHold: false);
+    notifyListeners();
+  }
+
+  Future<void> transferCall(String target) async {
+    final sid = _callInfo.callSid;
+    if (sid == null) return;
+    await _voiceService.transferCall(sid, target);
+  }
+
+  Future<void> acceptQueueCall(String callSid) async {
+    _pendingAutoAnswer = true;
+    _callInfo = _callInfo.copyWith(state: CallState.connecting);
+    notifyListeners();
+    try {
+      await _voiceService.acceptQueueCall(callSid);
+    } catch (e) {
+      debugPrint('CallProvider.acceptQueueCall error: $e');
+      _pendingAutoAnswer = false;
+      _callInfo = const CallInfo();
+      notifyListeners();
+    }
+  }
+
+  @override
+  void dispose() {
+    _stopDurationTimer();
+    _eventSub?.cancel();
+    super.dispose();
+  }
+}

mobile/lib/screens/active_call_screen.dart

@@ -0,0 +1,137 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../providers/call_provider.dart';
+import '../models/call_info.dart';
+import '../widgets/call_controls.dart';
+import '../widgets/dialpad.dart';
+
+class ActiveCallScreen extends StatefulWidget {
+  const ActiveCallScreen({super.key});
+
+  @override
+  State<ActiveCallScreen> createState() => _ActiveCallScreenState();
+}
+
+class _ActiveCallScreenState extends State<ActiveCallScreen> {
+  bool _showDialpad = false;
+
+  @override
+  Widget build(BuildContext context) {
+    final call = context.watch<CallProvider>();
+    final info = call.callInfo;
+
+    // Pop back when call ends
+    if (info.state == CallState.idle) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (mounted) Navigator.of(context).pop();
+      });
+    }
+
+    return Scaffold(
+      backgroundColor: Theme.of(context).colorScheme.surfaceContainerHighest,
+      body: SafeArea(
+        child: Column(
+          children: [
+            const Spacer(flex: 2),
+            // Caller info
+            Text(
+              info.callerNumber ?? 'Unknown',
+              style: Theme.of(context)
+                  .textTheme
+                  .headlineMedium
+                  ?.copyWith(fontWeight: FontWeight.bold),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              _stateLabel(info.state),
+              style: Theme.of(context).textTheme.bodyLarge?.copyWith(
+                    color: Theme.of(context).colorScheme.onSurfaceVariant,
+                  ),
+            ),
+            const SizedBox(height: 4),
+            if (info.state == CallState.connected)
+              Text(
+                _formatDuration(info.duration),
+                style: Theme.of(context).textTheme.titleMedium,
+              ),
+            const Spacer(flex: 2),
+            // Dialpad overlay
+            if (_showDialpad)
+              Dialpad(
+                onDigit: (d) => call.sendDigits(d),
+                onClose: () => setState(() => _showDialpad = false),
+              ),
+            // Controls
+            if (!_showDialpad)
+              CallControls(
+                callInfo: info,
+                onMute: () => call.toggleMute(),
+                onSpeaker: () => call.toggleSpeaker(),
+                onHold: () =>
+                    info.isOnHold ? call.unholdCall() : call.holdCall(),
+                onDialpad: () => setState(() => _showDialpad = true),
+                onTransfer: () => _showTransferDialog(context, call),
+                onHangUp: () => call.hangUp(),
+              ),
+            const Spacer(),
+          ],
+        ),
+      ),
+    );
+  }
+
+  String _stateLabel(CallState state) {
+    switch (state) {
+      case CallState.ringing:
+        return 'Ringing...';
+      case CallState.connecting:
+        return 'Connecting...';
+      case CallState.connected:
+        return 'Connected';
+      case CallState.disconnected:
+        return 'Disconnected';
+      case CallState.idle:
+        return '';
+    }
+  }
+
+  String _formatDuration(Duration d) {
+    final minutes = d.inMinutes.toString().padLeft(2, '0');
+    final seconds = (d.inSeconds % 60).toString().padLeft(2, '0');
+    return '$minutes:$seconds';
+  }
+
+  void _showTransferDialog(BuildContext context, CallProvider call) {
+    final controller = TextEditingController();
+    showDialog(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('Transfer Call'),
+        content: TextField(
+          controller: controller,
+          decoration: const InputDecoration(
+            labelText: 'Extension or Queue ID',
+            border: OutlineInputBorder(),
+          ),
+          keyboardType: TextInputType.number,
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx),
+            child: const Text('Cancel'),
+          ),
+          FilledButton(
+            onPressed: () {
+              final target = controller.text.trim();
+              if (target.isNotEmpty) {
+                call.transferCall(target);
+                Navigator.pop(ctx);
+              }
+            },
+            child: const Text('Transfer'),
+          ),
+        ],
+      ),
+    );
+  }
+}

mobile/lib/screens/dashboard_screen.dart

@@ -0,0 +1,374 @@
+import 'dart:io';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:provider/provider.dart';
+import 'package:twilio_voice/twilio_voice.dart';
+import '../models/queue_state.dart';
+import '../providers/agent_provider.dart';
+import '../providers/auth_provider.dart';
+import '../providers/call_provider.dart';
+import '../widgets/agent_status_toggle.dart';
+import '../widgets/dialpad.dart';
+import '../widgets/queue_card.dart';
+import 'settings_screen.dart';
+
+class DashboardScreen extends StatefulWidget {
+  const DashboardScreen({super.key});
+
+  @override
+  State<DashboardScreen> createState() => _DashboardScreenState();
+}
+
+class _DashboardScreenState extends State<DashboardScreen> {
+  bool _phoneAccountEnabled = true; // assume true until checked
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<AgentProvider>().refresh();
+      _checkPhoneAccount();
+    });
+  }
+
+  Future<void> _checkPhoneAccount() async {
+    if (!kIsWeb && Platform.isAndroid) {
+      final enabled = await TwilioVoice.instance.isPhoneAccountEnabled();
+      if (mounted && !enabled) {
+        setState(() => _phoneAccountEnabled = false);
+        _showPhoneAccountDialog();
+      } else if (mounted) {
+        setState(() => _phoneAccountEnabled = true);
+      }
+    }
+  }
+
+  void _showPhoneAccountDialog() {
+    showDialog(
+      context: context,
+      barrierDismissible: false,
+      builder: (ctx) => AlertDialog(
+        title: const Text('Enable Phone Account'),
+        content: const Text(
+          'TWP Softphone needs to be enabled as a calling account to make and receive calls.\n\n'
+          'Tap "Open Settings" below, then find "TWP Softphone" in the list and toggle it ON.',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx),
+            child: const Text('Later'),
+          ),
+          FilledButton(
+            onPressed: () async {
+              Navigator.pop(ctx);
+              await TwilioVoice.instance.openPhoneAccountSettings();
+              // Poll until enabled or user comes back
+              for (int i = 0; i < 30; i++) {
+                await Future.delayed(const Duration(seconds: 1));
+                if (!mounted) return;
+                final enabled = await TwilioVoice.instance.isPhoneAccountEnabled();
+                if (enabled) {
+                  setState(() => _phoneAccountEnabled = true);
+                  return;
+                }
+              }
+              // Re-check one more time when coming back
+              _checkPhoneAccount();
+            },
+            child: const Text('Open Settings'),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _showDialer(BuildContext context) {
+    final numberController = TextEditingController();
+    final phoneNumbers = context.read<AgentProvider>().phoneNumbers;
+    // Auto-select first phone number as caller ID
+    String? selectedCallerId =
+        phoneNumbers.isNotEmpty ? phoneNumbers.first.phoneNumber : null;
+
+    showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      shape: const RoundedRectangleBorder(
+        borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
+      ),
+      builder: (ctx) {
+        return StatefulBuilder(
+          builder: (ctx, setSheetState) {
+            return Padding(
+              padding: EdgeInsets.only(
+                bottom: MediaQuery.of(ctx).viewInsets.bottom,
+                top: 16,
+                left: 16,
+                right: 16,
+              ),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  // Number display
+                  TextField(
+                    controller: numberController,
+                    keyboardType: TextInputType.phone,
+                    autofillHints: const [AutofillHints.telephoneNumber],
+                    textAlign: TextAlign.center,
+                    style: Theme.of(ctx).textTheme.headlineSmall,
+                    decoration: InputDecoration(
+                      hintText: 'Enter phone number',
+                      suffixIcon: IconButton(
+                        icon: const Icon(Icons.backspace_outlined),
+                        onPressed: () {
+                          final text = numberController.text;
+                          if (text.isNotEmpty) {
+                            numberController.text =
+                                text.substring(0, text.length - 1);
+                            numberController.selection = TextSelection.fromPosition(
+                              TextPosition(offset: numberController.text.length),
+                            );
+                          }
+                        },
+                      ),
+                    ),
+                  ),
+                  // Caller ID selector (only if multiple numbers)
+                  if (phoneNumbers.length > 1) ...[
+                    const SizedBox(height: 12),
+                    DropdownButtonFormField<String>(
+                      initialValue: selectedCallerId,
+                      decoration: const InputDecoration(
+                        labelText: 'Caller ID',
+                        isDense: true,
+                        contentPadding: EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+                      ),
+                      items: phoneNumbers.map((p) => DropdownMenuItem<String>(
+                            value: p.phoneNumber,
+                            child: Text('${p.friendlyName} (${p.phoneNumber})'),
+                          )).toList(),
+                      onChanged: (value) {
+                        setSheetState(() {
+                          selectedCallerId = value;
+                        });
+                      },
+                    ),
+                  ] else if (phoneNumbers.length == 1) ...[
+                    const SizedBox(height: 8),
+                    Text(
+                      'Caller ID: ${phoneNumbers.first.phoneNumber}',
+                      style: Theme.of(ctx).textTheme.bodySmall?.copyWith(
+                            color: Theme.of(ctx).colorScheme.onSurfaceVariant,
+                          ),
+                    ),
+                  ],
+                  const SizedBox(height: 16),
+                  // Dialpad
+                  Dialpad(
+                    onDigit: (digit) {
+                      numberController.text += digit;
+                      numberController.selection = TextSelection.fromPosition(
+                        TextPosition(offset: numberController.text.length),
+                      );
+                    },
+                    onClose: () => Navigator.pop(ctx),
+                  ),
+                  const SizedBox(height: 8),
+                  // Call button
+                  ElevatedButton.icon(
+                    style: ElevatedButton.styleFrom(
+                      backgroundColor: Colors.green,
+                      foregroundColor: Colors.white,
+                      minimumSize: const Size(double.infinity, 48),
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(24),
+                      ),
+                    ),
+                    icon: const Icon(Icons.call),
+                    label: const Text('Call'),
+                    onPressed: () {
+                      final number = numberController.text.trim();
+                      if (number.isEmpty) return;
+                      if (selectedCallerId == null) {
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          const SnackBar(content: Text('No caller ID available. Add a phone number first.')),
+                        );
+                        return;
+                      }
+                      context.read<CallProvider>().makeCall(number, callerId: selectedCallerId);
+                      Navigator.pop(ctx);
+                    },
+                  ),
+                  const SizedBox(height: 16),
+                ],
+              ),
+            );
+          },
+        );
+      },
+    );
+  }
+
+  void _showQueueCalls(BuildContext context, QueueInfo queue) {
+    final voiceService = context.read<AuthProvider>().voiceService;
+    final callProvider = context.read<CallProvider>();
+
+    showModalBottomSheet(
+      context: context,
+      shape: const RoundedRectangleBorder(
+        borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
+      ),
+      builder: (ctx) {
+        return FutureBuilder<List<Map<String, dynamic>>>(
+          future: voiceService.getQueueCalls(queue.id),
+          builder: (context, snapshot) {
+            if (snapshot.connectionState == ConnectionState.waiting) {
+              return const Padding(
+                padding: EdgeInsets.all(32),
+                child: Center(child: CircularProgressIndicator()),
+              );
+            }
+
+            if (snapshot.hasError) {
+              return Padding(
+                padding: const EdgeInsets.all(24),
+                child: Center(
+                  child: Text('Error loading calls: ${snapshot.error}'),
+                ),
+              );
+            }
+
+            final calls = (snapshot.data ?? [])
+                .map((c) => QueueCall.fromJson(c))
+                .toList();
+
+            if (calls.isEmpty) {
+              return const Padding(
+                padding: EdgeInsets.all(24),
+                child: Center(child: Text('No calls waiting')),
+              );
+            }
+
+            return Padding(
+              padding: const EdgeInsets.symmetric(vertical: 16),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Padding(
+                    padding: const EdgeInsets.symmetric(horizontal: 16),
+                    child: Text(
+                      '${queue.name} - Waiting Calls',
+                      style: Theme.of(context).textTheme.titleMedium,
+                    ),
+                  ),
+                  const SizedBox(height: 8),
+                  ...calls.map((call) => ListTile(
+                        leading: const CircleAvatar(
+                          child: Icon(Icons.phone_in_talk),
+                        ),
+                        title: Text(call.fromNumber),
+                        subtitle: Text('Waiting ${_formatWaitTime(call.waitTime)}'),
+                        trailing: FilledButton.icon(
+                          icon: const Icon(Icons.call, size: 18),
+                          label: const Text('Accept'),
+                          onPressed: () {
+                            Navigator.pop(ctx);
+                            callProvider.acceptQueueCall(call.callSid);
+                            // Cancel queue alert notification
+                            FlutterLocalNotificationsPlugin().cancel(9001);
+                          },
+                        ),
+                      )),
+                ],
+              ),
+            );
+          },
+        );
+      },
+    );
+  }
+
+  String _formatWaitTime(int seconds) {
+    if (seconds < 60) return '${seconds}s';
+    final minutes = seconds ~/ 60;
+    final secs = seconds % 60;
+    return '${minutes}m ${secs}s';
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final agent = context.watch<AgentProvider>();
+
+    // Android Telecom framework handles the call UI via the native InCallUI,
+    // so we don't navigate to our own ActiveCallScreen.
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('TWP Softphone'),
+        actions: [
+          // SSE connection indicator
+          Padding(
+            padding: const EdgeInsets.only(right: 8),
+            child: Icon(
+              Icons.circle,
+              size: 12,
+              color: agent.sseConnected ? Colors.green : Colors.red,
+            ),
+          ),
+          IconButton(
+            icon: const Icon(Icons.settings),
+            onPressed: () => Navigator.push(context,
+                MaterialPageRoute(builder: (_) => const SettingsScreen())),
+          ),
+        ],
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () => _showDialer(context),
+        child: const Icon(Icons.phone),
+      ),
+      body: RefreshIndicator(
+        onRefresh: () => agent.refresh(),
+        child: ListView(
+          padding: const EdgeInsets.all(16),
+          children: [
+            if (!_phoneAccountEnabled)
+              Card(
+                color: Colors.orange.shade50,
+                child: ListTile(
+                  leading: Icon(Icons.warning, color: Colors.orange.shade700),
+                  title: const Text('Phone Account Not Enabled'),
+                  subtitle: const Text('Tap to enable calling in settings'),
+                  trailing: const Icon(Icons.chevron_right),
+                  onTap: () => _showPhoneAccountDialog(),
+                ),
+              ),
+            if (!_phoneAccountEnabled) const SizedBox(height: 8),
+            const AgentStatusToggle(),
+            const SizedBox(height: 24),
+            Text('Queues',
+                style: Theme.of(context).textTheme.titleMedium),
+            const SizedBox(height: 8),
+            if (agent.queues.isEmpty)
+              const Card(
+                child: Padding(
+                  padding: EdgeInsets.all(24),
+                  child: Center(child: Text('No queues assigned')),
+                ),
+              )
+            else
+              ...agent.queues.map((q) => Padding(
+                    padding: const EdgeInsets.only(bottom: 8),
+                    child: QueueCard(
+                      queue: q,
+                      onTap: q.waitingCount > 0
+                          ? () => _showQueueCalls(context, q)
+                          : null,
+                    ),
+                  )),
+          ],
+        ),
+      ),
+    );
+  }
+}

mobile/lib/screens/login_screen.dart

@@ -0,0 +1,165 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:provider/provider.dart';
+import '../providers/auth_provider.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+class LoginScreen extends StatefulWidget {
+  const LoginScreen({super.key});
+
+  @override
+  State<LoginScreen> createState() => _LoginScreenState();
+}
+
+class _LoginScreenState extends State<LoginScreen> {
+  final _formKey = GlobalKey<FormState>();
+  final _serverController = TextEditingController();
+  final _usernameController = TextEditingController();
+  final _passwordController = TextEditingController();
+  bool _obscurePassword = true;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadSavedServer();
+  }
+
+  Future<void> _loadSavedServer() async {
+    const storage = FlutterSecureStorage();
+    final saved = await storage.read(key: 'server_url');
+    if (saved != null && mounted) {
+      _serverController.text = saved;
+    }
+  }
+
+  void _submit() {
+    if (!_formKey.currentState!.validate()) return;
+
+    var serverUrl = _serverController.text.trim();
+    if (!serverUrl.startsWith('http')) {
+      serverUrl = 'https://$serverUrl';
+    }
+
+    TextInput.finishAutofillContext();
+    context.read<AuthProvider>().login(
+          serverUrl,
+          _usernameController.text.trim(),
+          _passwordController.text,
+        );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final auth = context.watch<AuthProvider>();
+
+    return Scaffold(
+      body: SafeArea(
+        child: Center(
+          child: SingleChildScrollView(
+            padding: const EdgeInsets.all(24),
+            child: AutofillGroup(
+              child: Form(
+              key: _formKey,
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  Icon(
+                    Icons.phone_in_talk,
+                    size: 64,
+                    color: Theme.of(context).colorScheme.primary,
+                  ),
+                  const SizedBox(height: 16),
+                  Text(
+                    'TWP Softphone',
+                    style: Theme.of(context).textTheme.headlineMedium,
+                  ),
+                  const SizedBox(height: 32),
+                  TextFormField(
+                    controller: _serverController,
+                    decoration: const InputDecoration(
+                      labelText: 'Server URL',
+                      hintText: 'https://your-site.com',
+                      prefixIcon: Icon(Icons.dns),
+                      border: OutlineInputBorder(),
+                    ),
+                    keyboardType: TextInputType.url,
+                    autofillHints: const [AutofillHints.url],
+                    validator: (v) =>
+                        v == null || v.trim().isEmpty ? 'Required' : null,
+                  ),
+                  const SizedBox(height: 16),
+                  TextFormField(
+                    controller: _usernameController,
+                    decoration: const InputDecoration(
+                      labelText: 'Username',
+                      prefixIcon: Icon(Icons.person),
+                      border: OutlineInputBorder(),
+                    ),
+                    autofillHints: const [AutofillHints.username],
+                    validator: (v) =>
+                        v == null || v.trim().isEmpty ? 'Required' : null,
+                  ),
+                  const SizedBox(height: 16),
+                  TextFormField(
+                    controller: _passwordController,
+                    decoration: InputDecoration(
+                      labelText: 'Password',
+                      prefixIcon: const Icon(Icons.lock),
+                      border: const OutlineInputBorder(),
+                      suffixIcon: IconButton(
+                        icon: Icon(_obscurePassword
+                            ? Icons.visibility_off
+                            : Icons.visibility),
+                        onPressed: () =>
+                            setState(() => _obscurePassword = !_obscurePassword),
+                      ),
+                    ),
+                    obscureText: _obscurePassword,
+                    autofillHints: const [AutofillHints.password],
+                    validator: (v) =>
+                        v == null || v.isEmpty ? 'Required' : null,
+                  ),
+                  if (auth.error != null) ...[
+                    const SizedBox(height: 16),
+                    Text(
+                      auth.error!,
+                      style: TextStyle(
+                          color: Theme.of(context).colorScheme.error),
+                    ),
+                  ],
+                  const SizedBox(height: 24),
+                  SizedBox(
+                    width: double.infinity,
+                    height: 48,
+                    child: FilledButton(
+                      onPressed: auth.state == AuthState.authenticating
+                          ? null
+                          : _submit,
+                      child: auth.state == AuthState.authenticating
+                          ? const SizedBox(
+                              width: 24,
+                              height: 24,
+                              child: CircularProgressIndicator(
+                                  strokeWidth: 2, color: Colors.white),
+                            )
+                          : const Text('Connect'),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _serverController.dispose();
+    _usernameController.dispose();
+    _passwordController.dispose();
+    super.dispose();
+  }
+}

mobile/lib/screens/settings_screen.dart

@@ -0,0 +1,68 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import '../providers/auth_provider.dart';
+
+class SettingsScreen extends StatefulWidget {
+  const SettingsScreen({super.key});
+
+  @override
+  State<SettingsScreen> createState() => _SettingsScreenState();
+}
+
+class _SettingsScreenState extends State<SettingsScreen> {
+  String? _serverUrl;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadServerUrl();
+  }
+
+  Future<void> _loadServerUrl() async {
+    const storage = FlutterSecureStorage();
+    final url = await storage.read(key: 'server_url');
+    if (mounted) setState(() => _serverUrl = url);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final auth = context.watch<AuthProvider>();
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('Settings')),
+      body: ListView(
+        children: [
+          ListTile(
+            leading: const Icon(Icons.dns),
+            title: const Text('Server'),
+            subtitle: Text(_serverUrl ?? 'Not configured'),
+          ),
+          if (auth.user != null) ...[
+            ListTile(
+              leading: const Icon(Icons.person),
+              title: const Text('User'),
+              subtitle: Text(auth.user!.displayName),
+            ),
+            ListTile(
+              leading: const Icon(Icons.badge),
+              title: const Text('Login'),
+              subtitle: Text(auth.user!.login),
+            ),
+          ],
+          const Divider(),
+          ListTile(
+            leading: const Icon(Icons.logout, color: Colors.red),
+            title: const Text('Logout', style: TextStyle(color: Colors.red)),
+            onTap: () async {
+              await auth.logout();
+              if (context.mounted) {
+                Navigator.of(context).popUntil((route) => route.isFirst);
+              }
+            },
+          ),
+        ],
+      ),
+    );
+  }
+}

mobile/lib/services/api_client.dart

@@ -0,0 +1,85 @@
+import 'package:dio/dio.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+class ApiClient {
+  late final Dio dio;
+  final FlutterSecureStorage _storage = const FlutterSecureStorage();
+  VoidCallback? onForceLogout;
+
+  ApiClient() {
+    dio = Dio(BaseOptions(
+      connectTimeout: const Duration(seconds: 15),
+      receiveTimeout: const Duration(seconds: 30),
+    ));
+
+    dio.interceptors.add(InterceptorsWrapper(
+      onRequest: (options, handler) async {
+        final token = await _storage.read(key: 'access_token');
+        if (token != null) {
+          options.headers['Authorization'] = 'Bearer $token';
+        }
+        handler.next(options);
+      },
+      onError: (error, handler) async {
+        if (error.response?.statusCode == 401) {
+          final refreshed = await _tryRefreshToken();
+          if (refreshed) {
+            final opts = error.requestOptions;
+            final token = await _storage.read(key: 'access_token');
+            opts.headers['Authorization'] = 'Bearer $token';
+            try {
+              final response = await dio.fetch(opts);
+              return handler.resolve(response);
+            } catch (e) {
+              return handler.next(error);
+            }
+          } else {
+            onForceLogout?.call();
+          }
+        }
+        handler.next(error);
+      },
+    ));
+  }
+
+  Future<void> setBaseUrl(String serverUrl) async {
+    final url = serverUrl.endsWith('/')
+        ? serverUrl.substring(0, serverUrl.length - 1)
+        : serverUrl;
+    dio.options.baseUrl = '$url/wp-json/twilio-mobile/v1';
+    await _storage.write(key: 'server_url', value: url);
+  }
+
+  Future<void> restoreBaseUrl() async {
+    final url = await _storage.read(key: 'server_url');
+    if (url != null) {
+      dio.options.baseUrl = '$url/wp-json/twilio-mobile/v1';
+    }
+  }
+
+  Future<bool> _tryRefreshToken() async {
+    try {
+      final refreshToken = await _storage.read(key: 'refresh_token');
+      if (refreshToken == null) return false;
+
+      final response = await dio.post(
+        '/auth/refresh',
+        data: {'refresh_token': refreshToken},
+        options: Options(headers: {'Authorization': ''}),
+      );
+
+      if (response.statusCode == 200 && response.data['success'] == true) {
+        await _storage.write(
+            key: 'access_token', value: response.data['access_token']);
+        if (response.data['refresh_token'] != null) {
+          await _storage.write(
+              key: 'refresh_token', value: response.data['refresh_token']);
+        }
+        return true;
+      }
+    } catch (_) {}
+    return false;
+  }
+}
+
+typedef VoidCallback = void Function();

mobile/lib/services/auth_service.dart

@@ -0,0 +1,108 @@
+import 'dart:async';
+import 'dart:convert';
+import 'package:dio/dio.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import '../models/user.dart';
+import 'api_client.dart';
+
+class AuthService {
+  final ApiClient _api;
+  final FlutterSecureStorage _storage = const FlutterSecureStorage();
+  Timer? _refreshTimer;
+
+  AuthService(this._api);
+
+  Future<User> login(String serverUrl, String username, String password,
+      {String? fcmToken}) async {
+    await _api.setBaseUrl(serverUrl);
+
+    final response = await _api.dio.post(
+      '/auth/login',
+      data: {
+        'username': username,
+        'password': password,
+        if (fcmToken != null) 'fcm_token': fcmToken,
+      },
+      options: Options(receiveTimeout: const Duration(seconds: 60)),
+    );
+
+    final data = response.data;
+    if (data['success'] != true) {
+      throw Exception(data['message'] ?? 'Login failed');
+    }
+
+    await _storage.write(key: 'access_token', value: data['access_token']);
+    await _storage.write(key: 'refresh_token', value: data['refresh_token']);
+    await _storage.write(key: 'user_data', value: jsonEncode(data['user']));
+
+    _scheduleRefresh(data['expires_in'] as int? ?? 3600);
+
+    return User.fromJson(data['user']);
+  }
+
+  Future<User?> tryRestoreSession() async {
+    final token = await _storage.read(key: 'access_token');
+    if (token == null) return null;
+
+    await _api.restoreBaseUrl();
+    if (_api.dio.options.baseUrl.isEmpty) return null;
+
+    try {
+      final response = await _api.dio.get('/agent/status');
+      if (response.statusCode != 200) return null;
+
+      final userData = await _storage.read(key: 'user_data');
+      if (userData != null) {
+        return User.fromJson(jsonDecode(userData) as Map<String, dynamic>);
+      }
+      return null;
+    } catch (_) {
+      return null;
+    }
+  }
+
+  Future<void> refreshToken() async {
+    final refreshToken = await _storage.read(key: 'refresh_token');
+    if (refreshToken == null) throw Exception('No refresh token');
+
+    final response = await _api.dio.post('/auth/refresh', data: {
+      'refresh_token': refreshToken,
+    });
+
+    final data = response.data;
+    if (data['success'] != true) {
+      throw Exception('Token refresh failed');
+    }
+
+    await _storage.write(key: 'access_token', value: data['access_token']);
+    if (data['refresh_token'] != null) {
+      await _storage.write(key: 'refresh_token', value: data['refresh_token']);
+    }
+
+    _scheduleRefresh(data['expires_in'] as int? ?? 3600);
+  }
+
+  void _scheduleRefresh(int expiresInSeconds) {
+    _refreshTimer?.cancel();
+    // Refresh 2 minutes before expiry
+    final refreshIn = Duration(seconds: expiresInSeconds - 120);
+    if (refreshIn.isNegative) return;
+    _refreshTimer = Timer(refreshIn, () async {
+      try {
+        await refreshToken();
+      } catch (_) {}
+    });
+  }
+
+  Future<void> logout() async {
+    _refreshTimer?.cancel();
+    try {
+      await _api.dio.post('/auth/logout');
+    } catch (_) {}
+    await _storage.deleteAll();
+  }
+
+  void dispose() {
+    _refreshTimer?.cancel();
+  }
+}

mobile/lib/services/push_notification_service.dart

@@ -0,0 +1,149 @@
+import 'dart:typed_data';
+import 'package:firebase_core/firebase_core.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'api_client.dart';
+
+/// Notification ID for queue alerts (fixed so we can cancel it).
+const int _queueAlertNotificationId = 9001;
+
+/// Background handler — must be top-level function.
+@pragma('vm:entry-point')
+Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
+  await Firebase.initializeApp();
+  final data = message.data;
+  final type = data['type'];
+
+  if (type == 'queue_alert') {
+    await _showQueueAlertNotification(data);
+  } else if (type == 'queue_alert_cancel') {
+    final plugin = FlutterLocalNotificationsPlugin();
+    await plugin.cancel(_queueAlertNotificationId);
+  }
+  // VoIP pushes handled natively by twilio_voice plugin.
+}
+
+/// Show an insistent queue alert notification (works from background handler too).
+Future<void> _showQueueAlertNotification(Map<String, dynamic> data) async {
+  final plugin = FlutterLocalNotificationsPlugin();
+
+  final title = data['title'] ?? 'Call Waiting';
+  final body = data['body'] ?? 'New call in queue';
+
+  final androidDetails = AndroidNotificationDetails(
+    'twp_queue_alerts',
+    'Queue Alerts',
+    channelDescription: 'Alerts when calls are waiting in queue',
+    importance: Importance.max,
+    priority: Priority.max,
+    playSound: true,
+    sound: const RawResourceAndroidNotificationSound('queue_alert'),
+    enableVibration: true,
+    vibrationPattern: Int64List.fromList([0, 500, 200, 500, 200, 500]),
+    ongoing: true,
+    autoCancel: false,
+    category: AndroidNotificationCategory.alarm,
+    additionalFlags: Int32List.fromList([4]), // FLAG_INSISTENT = 4
+    fullScreenIntent: true,
+    visibility: NotificationVisibility.public,
+  );
+
+  await plugin.show(
+    _queueAlertNotificationId,
+    title,
+    body,
+    NotificationDetails(android: androidDetails),
+  );
+}
+
+class PushNotificationService {
+  final ApiClient _api;
+  final FirebaseMessaging _messaging = FirebaseMessaging.instance;
+  final FlutterLocalNotificationsPlugin _localNotifications =
+      FlutterLocalNotificationsPlugin();
+  String? _fcmToken;
+
+  String? get fcmToken => _fcmToken;
+
+  PushNotificationService(this._api);
+
+  Future<void> initialize() async {
+    FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);
+
+    await _messaging.requestPermission(
+      alert: true,
+      badge: true,
+      sound: true,
+      criticalAlert: true,
+    );
+
+    // Initialize local notifications
+    const androidSettings =
+        AndroidInitializationSettings('@mipmap/ic_launcher');
+    const initSettings = InitializationSettings(android: androidSettings);
+    await _localNotifications.initialize(initSettings);
+
+    // Get and register FCM token
+    final token = await _messaging.getToken();
+    debugPrint('FCM token: ${token != null ? "${token.substring(0, 20)}..." : "NULL"}');
+    if (token != null) {
+      _fcmToken = token;
+      await _registerToken(token);
+    } else {
+      debugPrint('FCM: Failed to get token - Firebase may not be configured correctly');
+    }
+
+    // Listen for token refresh
+    _messaging.onTokenRefresh.listen(_registerToken);
+
+    // Handle foreground messages (non-VoIP)
+    FirebaseMessaging.onMessage.listen(_handleForegroundMessage);
+  }
+
+  Future<void> _registerToken(String token) async {
+    try {
+      await _api.dio.post('/fcm/register', data: {'fcm_token': token});
+    } catch (_) {}
+  }
+
+  void _handleForegroundMessage(RemoteMessage message) {
+    final data = message.data;
+    final type = data['type'];
+
+    // VoIP incoming_call is handled by twilio_voice natively
+    if (type == 'incoming_call') return;
+
+    // Queue alert — show insistent notification
+    if (type == 'queue_alert') {
+      _showQueueAlertNotification(data);
+      return;
+    }
+
+    // Queue alert cancel — dismiss notification
+    if (type == 'queue_alert_cancel') {
+      _localNotifications.cancel(_queueAlertNotificationId);
+      return;
+    }
+
+    // Show local notification for other types (missed call, etc.)
+    _localNotifications.show(
+      message.hashCode,
+      data['title'] ?? 'TWP Softphone',
+      data['body'] ?? '',
+      const NotificationDetails(
+        android: AndroidNotificationDetails(
+          'twp_general',
+          'General Notifications',
+          importance: Importance.high,
+          priority: Priority.high,
+        ),
+      ),
+    );
+  }
+
+  /// Cancel any active queue alert (called when agent accepts a call in-app).
+  void cancelQueueAlert() {
+    _localNotifications.cancel(_queueAlertNotificationId);
+  }
+}

mobile/lib/services/sse_service.dart

@@ -0,0 +1,238 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:math';
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import '../config/app_config.dart';
+import 'api_client.dart';
+
+class SseEvent {
+  final String event;
+  final Map<String, dynamic> data;
+
+  SseEvent({required this.event, required this.data});
+}
+
+class SseService {
+  final ApiClient _api;
+  final FlutterSecureStorage _storage = const FlutterSecureStorage();
+  final StreamController<SseEvent> _eventController =
+      StreamController<SseEvent>.broadcast();
+  final StreamController<bool> _connectionController =
+      StreamController<bool>.broadcast();
+
+  CancelToken? _cancelToken;
+  Timer? _reconnectTimer;
+  int _reconnectAttempt = 0;
+  bool _shouldReconnect = true;
+  int _sseFailures = 0;
+  Timer? _pollTimer;
+  Map<String, dynamic>? _previousPollState;
+
+  Stream<SseEvent> get events => _eventController.stream;
+  Stream<bool> get connectionState => _connectionController.stream;
+
+  SseService(this._api);
+
+  Future<void> connect() async {
+    _shouldReconnect = true;
+    _reconnectAttempt = 0;
+    _sseFailures = 0;
+    await _doConnect();
+  }
+
+  Future<void> _doConnect() async {
+    // After 2 SSE failures, fall back to polling
+    if (_sseFailures >= 2) {
+      debugPrint('SSE: falling back to polling after $_sseFailures failures');
+      _startPolling();
+      return;
+    }
+
+    _cancelToken?.cancel();
+    _cancelToken = CancelToken();
+
+    // Timer to detect if SSE stream never delivers data (Apache buffering)
+    Timer? firstDataTimer;
+    bool gotData = false;
+
+    try {
+      final token = await _storage.read(key: 'access_token');
+      debugPrint('SSE: connecting via stream (attempt ${_sseFailures + 1})');
+
+      firstDataTimer = Timer(const Duration(seconds: 8), () {
+        if (!gotData) {
+          debugPrint('SSE: no data received in 8s, cancelling');
+          _cancelToken?.cancel();
+        }
+      });
+
+      final response = await _api.dio.get(
+        '/stream/events',
+        options: Options(
+          headers: {'Authorization': 'Bearer $token'},
+          responseType: ResponseType.stream,
+          receiveTimeout: Duration.zero,
+        ),
+        cancelToken: _cancelToken,
+      );
+
+      debugPrint('SSE: connected, status=${response.statusCode}');
+      _connectionController.add(true);
+      _reconnectAttempt = 0;
+      _sseFailures = 0;
+
+      final stream = response.data.stream as Stream<List<int>>;
+      String buffer = '';
+
+      await for (final chunk in stream) {
+        if (!gotData) {
+          gotData = true;
+          firstDataTimer.cancel();
+          debugPrint('SSE: first data received');
+        }
+        buffer += utf8.decode(chunk);
+        final lines = buffer.split('\n');
+        buffer = lines.removeLast();
+
+        String? eventName;
+        String? dataStr;
+
+        for (final line in lines) {
+          if (line.startsWith('event:')) {
+            eventName = line.substring(6).trim();
+          } else if (line.startsWith('data:')) {
+            dataStr = line.substring(5).trim();
+          } else if (line.isEmpty && eventName != null && dataStr != null) {
+            try {
+              final data = jsonDecode(dataStr) as Map<String, dynamic>;
+              _eventController.add(SseEvent(event: eventName, data: data));
+            } catch (_) {}
+            eventName = null;
+            dataStr = null;
+          }
+        }
+      }
+    } catch (e) {
+      firstDataTimer?.cancel();
+      // Distinguish user-initiated cancel from timeout cancel
+      if (e is DioException && e.type == DioExceptionType.cancel) {
+        if (!gotData && _shouldReconnect) {
+          // Cancelled by our firstDataTimer — count as SSE failure
+          debugPrint('SSE: stream timed out (no data), failure ${_sseFailures + 1}');
+          _sseFailures++;
+          _connectionController.add(false);
+        } else {
+          return; // User-initiated disconnect
+        }
+      } else {
+        debugPrint('SSE: stream error: $e');
+        _sseFailures++;
+        _connectionController.add(false);
+      }
+    }
+
+    if (_shouldReconnect) {
+      _scheduleReconnect();
+    }
+  }
+
+  void _scheduleReconnect() {
+    _reconnectTimer?.cancel();
+    final delay = Duration(
+      milliseconds: min(
+        AppConfig.sseMaxReconnect.inMilliseconds,
+        AppConfig.sseReconnectBase.inMilliseconds *
+            pow(2, _reconnectAttempt).toInt(),
+      ),
+    );
+    _reconnectAttempt++;
+    _reconnectTimer = Timer(delay, _doConnect);
+  }
+
+  // Polling fallback when SSE streaming doesn't work
+  void _startPolling() {
+    _pollTimer?.cancel();
+    _previousPollState = null;
+    _poll();
+    _pollTimer = Timer.periodic(const Duration(seconds: 5), (_) => _poll());
+  }
+
+  Future<void> _poll() async {
+    if (!_shouldReconnect) return;
+    try {
+      final response = await _api.dio.get('/stream/poll');
+      final data = Map<String, dynamic>.from(response.data);
+      _connectionController.add(true);
+
+      if (_previousPollState != null) {
+        _diffAndEmit(_previousPollState!, data);
+      }
+      _previousPollState = data;
+    } catch (e) {
+      debugPrint('SSE poll error: $e');
+      _connectionController.add(false);
+    }
+  }
+
+  void _diffAndEmit(Map<String, dynamic> prev, Map<String, dynamic> curr) {
+    final prevStatus = prev['agent_status']?.toString();
+    final currStatus = curr['agent_status']?.toString();
+    if (prevStatus != currStatus) {
+      _eventController.add(SseEvent(
+        event: 'agent_status_changed',
+        data: (curr['agent_status'] as Map<String, dynamic>?) ?? {},
+      ));
+    }
+
+    final prevQueues = prev['queues'] as Map<String, dynamic>? ?? {};
+    final currQueues = curr['queues'] as Map<String, dynamic>? ?? {};
+    for (final entry in currQueues.entries) {
+      final currQueue = Map<String, dynamic>.from(entry.value);
+      final prevQueue = prevQueues[entry.key] as Map<String, dynamic>?;
+      if (prevQueue == null) {
+        _eventController.add(SseEvent(event: 'queue_added', data: currQueue));
+        continue;
+      }
+      final currCount = currQueue['waiting_count'] as int? ?? 0;
+      final prevCount = prevQueue['waiting_count'] as int? ?? 0;
+      if (currCount > prevCount) {
+        _eventController.add(SseEvent(event: 'call_enqueued', data: currQueue));
+      } else if (currCount < prevCount) {
+        _eventController.add(SseEvent(event: 'call_dequeued', data: currQueue));
+      }
+    }
+
+    final prevCall = prev['current_call']?.toString();
+    final currCall = curr['current_call']?.toString();
+    if (prevCall != currCall) {
+      if (curr['current_call'] != null && prev['current_call'] == null) {
+        _eventController.add(SseEvent(
+          event: 'call_started',
+          data: curr['current_call'] as Map<String, dynamic>,
+        ));
+      } else if (curr['current_call'] == null && prev['current_call'] != null) {
+        _eventController.add(SseEvent(
+          event: 'call_ended',
+          data: prev['current_call'] as Map<String, dynamic>,
+        ));
+      }
+    }
+  }
+
+  void disconnect() {
+    _shouldReconnect = false;
+    _reconnectTimer?.cancel();
+    _pollTimer?.cancel();
+    _pollTimer = null;
+    _cancelToken?.cancel();
+    _connectionController.add(false);
+  }
+
+  void dispose() {
+    disconnect();
+    _eventController.close();
+    _connectionController.close();
+  }
+}

mobile/lib/services/voice_service.dart

@@ -0,0 +1,146 @@
+import 'dart:async';
+import 'dart:io';
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:twilio_voice/twilio_voice.dart';
+import 'api_client.dart';
+
+class VoiceService {
+  final ApiClient _api;
+  Timer? _tokenRefreshTimer;
+  String? _identity;
+  String? _deviceToken;
+  StreamSubscription? _eventSubscription;
+
+  final StreamController<CallEvent> _callEventController =
+      StreamController<CallEvent>.broadcast();
+  Stream<CallEvent> get callEvents => _callEventController.stream;
+
+  VoiceService(this._api);
+
+  Future<void> initialize({String? deviceToken}) async {
+    _deviceToken = deviceToken;
+    debugPrint('VoiceService.initialize: deviceToken=${deviceToken != null ? "present (${deviceToken.length} chars)" : "NULL"}');
+
+    // Request permissions (Android telecom requires these)
+    await TwilioVoice.instance.requestMicAccess();
+    if (!kIsWeb && Platform.isAndroid) {
+      await TwilioVoice.instance.requestReadPhoneStatePermission();
+      await TwilioVoice.instance.requestReadPhoneNumbersPermission();
+      await TwilioVoice.instance.requestCallPhonePermission();
+      await TwilioVoice.instance.requestManageOwnCallsPermission();
+      // Register phone account with Android telecom
+      // (enabling is handled by dashboard UI with a user-friendly dialog)
+      await TwilioVoice.instance.registerPhoneAccount();
+    }
+
+    // Fetch token and register
+    await _fetchAndRegisterToken();
+
+    // Listen for call events (only once)
+    _eventSubscription ??= TwilioVoice.instance.callEventsListener.listen((event) {
+      if (!_callEventController.isClosed) {
+        _callEventController.add(event);
+      }
+    });
+
+    // Refresh token every 50 minutes
+    _tokenRefreshTimer?.cancel();
+    _tokenRefreshTimer = Timer.periodic(
+      const Duration(minutes: 50),
+      (_) => _fetchAndRegisterToken(),
+    );
+  }
+
+  Future<void> _fetchAndRegisterToken() async {
+    try {
+      final response = await _api.dio.get('/voice/token');
+      final data = response.data;
+      final token = data['token'] as String;
+      _identity = data['identity'] as String;
+      await TwilioVoice.instance.setTokens(
+        accessToken: token,
+        deviceToken: _deviceToken ?? 'no-fcm',
+      );
+    } catch (e) {
+      debugPrint('VoiceService._fetchAndRegisterToken error: $e');
+      if (e is DioException) debugPrint('  response: ${e.response?.data}');
+    }
+  }
+
+  String? get identity => _identity;
+
+  Future<void> answer() async {
+    await TwilioVoice.instance.call.answer();
+  }
+
+  Future<void> reject() async {
+    await TwilioVoice.instance.call.hangUp();
+  }
+
+  Future<void> hangUp() async {
+    await TwilioVoice.instance.call.hangUp();
+  }
+
+  Future<void> toggleMute(bool mute) async {
+    await TwilioVoice.instance.call.toggleMute(mute);
+  }
+
+  Future<void> toggleSpeaker(bool speaker) async {
+    await TwilioVoice.instance.call.toggleSpeaker(speaker);
+  }
+
+  Future<bool> makeCall(String to, {String? callerId}) async {
+    try {
+      final extraOptions = <String, dynamic>{};
+      if (callerId != null && callerId.isNotEmpty) {
+        extraOptions['CallerId'] = callerId;
+      }
+      debugPrint('VoiceService.makeCall: to=$to, from=$_identity, extras=$extraOptions');
+      final result = await TwilioVoice.instance.call.place(
+        to: to,
+        from: _identity ?? '',
+        extraOptions: extraOptions,
+      ) ?? false;
+      debugPrint('VoiceService.makeCall: result=$result');
+      return result;
+    } catch (e) {
+      debugPrint('VoiceService.makeCall error: $e');
+      return false;
+    }
+  }
+
+  Future<void> sendDigits(String digits) async {
+    await TwilioVoice.instance.call.sendDigits(digits);
+  }
+
+  Future<List<Map<String, dynamic>>> getQueueCalls(int queueId) async {
+    final response = await _api.dio.get('/queues/$queueId/calls');
+    return List<Map<String, dynamic>>.from(response.data['calls'] ?? []);
+  }
+
+  Future<void> acceptQueueCall(String callSid) async {
+    await _api.dio.post('/calls/$callSid/accept', data: {
+      'client_identity': _identity,
+    });
+  }
+
+  Future<void> holdCall(String callSid) async {
+    await _api.dio.post('/calls/$callSid/hold');
+  }
+
+  Future<void> unholdCall(String callSid) async {
+    await _api.dio.post('/calls/$callSid/unhold');
+  }
+
+  Future<void> transferCall(String callSid, String target) async {
+    await _api.dio.post('/calls/$callSid/transfer', data: {'target': target});
+  }
+
+  void dispose() {
+    _tokenRefreshTimer?.cancel();
+    _eventSubscription?.cancel();
+    _eventSubscription = null;
+    _callEventController.close();
+  }
+}

mobile/lib/widgets/agent_status_toggle.dart

@@ -0,0 +1,51 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../models/agent_status.dart';
+import '../providers/agent_provider.dart';
+
+class AgentStatusToggle extends StatelessWidget {
+  const AgentStatusToggle({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final agent = context.watch<AgentProvider>();
+    final current = agent.status?.status ?? AgentStatusValue.offline;
+
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text('Agent Status',
+                style: Theme.of(context).textTheme.titleSmall),
+            const SizedBox(height: 12),
+            SegmentedButton<AgentStatusValue>(
+              segments: const [
+                ButtonSegment(
+                  value: AgentStatusValue.available,
+                  label: Text('Available'),
+                  icon: Icon(Icons.circle, color: Colors.green, size: 12),
+                ),
+                ButtonSegment(
+                  value: AgentStatusValue.busy,
+                  label: Text('Busy'),
+                  icon: Icon(Icons.circle, color: Colors.orange, size: 12),
+                ),
+                ButtonSegment(
+                  value: AgentStatusValue.offline,
+                  label: Text('Offline'),
+                  icon: Icon(Icons.circle, color: Colors.red, size: 12),
+                ),
+              ],
+              selected: {current},
+              onSelectionChanged: (selection) {
+                agent.updateStatus(selection.first);
+              },
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

mobile/lib/widgets/call_controls.dart

@@ -0,0 +1,118 @@
+import 'package:flutter/material.dart';
+import '../models/call_info.dart';
+
+class CallControls extends StatelessWidget {
+  final CallInfo callInfo;
+  final VoidCallback onMute;
+  final VoidCallback onSpeaker;
+  final VoidCallback onHold;
+  final VoidCallback onDialpad;
+  final VoidCallback onTransfer;
+  final VoidCallback onHangUp;
+
+  const CallControls({
+    super.key,
+    required this.callInfo,
+    required this.onMute,
+    required this.onSpeaker,
+    required this.onHold,
+    required this.onDialpad,
+    required this.onTransfer,
+    required this.onHangUp,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 24),
+      child: Column(
+        children: [
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+            children: [
+              _ControlButton(
+                icon: callInfo.isMuted ? Icons.mic_off : Icons.mic,
+                label: 'Mute',
+                active: callInfo.isMuted,
+                onTap: onMute,
+              ),
+              _ControlButton(
+                icon: callInfo.isSpeakerOn
+                    ? Icons.volume_up
+                    : Icons.volume_down,
+                label: 'Speaker',
+                active: callInfo.isSpeakerOn,
+                onTap: onSpeaker,
+              ),
+              _ControlButton(
+                icon: callInfo.isOnHold ? Icons.play_arrow : Icons.pause,
+                label: callInfo.isOnHold ? 'Resume' : 'Hold',
+                active: callInfo.isOnHold,
+                onTap: onHold,
+              ),
+            ],
+          ),
+          const SizedBox(height: 16),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+            children: [
+              _ControlButton(
+                icon: Icons.dialpad,
+                label: 'Dialpad',
+                onTap: onDialpad,
+              ),
+              _ControlButton(
+                icon: Icons.phone_forwarded,
+                label: 'Transfer',
+                onTap: onTransfer,
+              ),
+            ],
+          ),
+          const SizedBox(height: 24),
+          FloatingActionButton.large(
+            onPressed: onHangUp,
+            backgroundColor: Colors.red,
+            child: const Icon(Icons.call_end, color: Colors.white, size: 36),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _ControlButton extends StatelessWidget {
+  final IconData icon;
+  final String label;
+  final bool active;
+  final VoidCallback onTap;
+
+  const _ControlButton({
+    required this.icon,
+    required this.label,
+    this.active = false,
+    required this.onTap,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        IconButton.filled(
+          onPressed: onTap,
+          icon: Icon(icon),
+          style: IconButton.styleFrom(
+            backgroundColor: active
+                ? Theme.of(context).colorScheme.primaryContainer
+                : Theme.of(context).colorScheme.surfaceContainerHighest,
+            foregroundColor: active
+                ? Theme.of(context).colorScheme.primary
+                : Theme.of(context).colorScheme.onSurface,
+          ),
+        ),
+        const SizedBox(height: 4),
+        Text(label, style: Theme.of(context).textTheme.labelSmall),
+      ],
+    );
+  }
+}

mobile/lib/widgets/dialpad.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+
+class Dialpad extends StatelessWidget {
+  final void Function(String digit) onDigit;
+  final VoidCallback onClose;
+
+  const Dialpad({super.key, required this.onDigit, required this.onClose});
+
+  static const _keys = [
+    ['1', '2', '3'],
+    ['4', '5', '6'],
+    ['7', '8', '9'],
+    ['*', '0', '#'],
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 48),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          ..._keys.map((row) => Row(
+                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+                children: row
+                    .map((key) => Padding(
+                          padding: const EdgeInsets.all(4),
+                          child: InkWell(
+                            onTap: () => onDigit(key),
+                            borderRadius: BorderRadius.circular(40),
+                            child: Container(
+                              width: 64,
+                              height: 64,
+                              alignment: Alignment.center,
+                              child: Text(
+                                key,
+                                style: Theme.of(context)
+                                    .textTheme
+                                    .headlineSmall,
+                              ),
+                            ),
+                          ),
+                        ))
+                    .toList(),
+              )),
+          const SizedBox(height: 8),
+          TextButton(
+            onPressed: onClose,
+            child: const Text('Close'),
+          ),
+        ],
+      ),
+    );
+  }
+}

mobile/lib/widgets/queue_card.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+import '../models/queue_state.dart';
+
+class QueueCard extends StatelessWidget {
+  final QueueInfo queue;
+  final VoidCallback? onTap;
+
+  const QueueCard({super.key, required this.queue, this.onTap});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: ListTile(
+        onTap: onTap,
+        leading: CircleAvatar(
+          backgroundColor: queue.waitingCount > 0
+              ? Colors.orange.shade100
+              : Colors.green.shade100,
+          child: Text(
+            '${queue.waitingCount}',
+            style: TextStyle(
+              color: queue.waitingCount > 0 ? Colors.orange : Colors.green,
+              fontWeight: FontWeight.bold,
+            ),
+          ),
+        ),
+        title: Text(queue.name),
+        subtitle: Text(
+          queue.waitingCount > 0
+              ? '${queue.waitingCount} waiting'
+              : 'No calls waiting',
+        ),
+        trailing: queue.extension != null
+            ? Chip(label: Text('Ext ${queue.extension}'))
+            : null,
+      ),
+    );
+  }
+}

mobile/pubspec.lock

@@ -0,0 +1,890 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: "8d7ff3948166b8ec5da0fbb5962000926b8e02f2ed9b3e51d1738905fbd4c98d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "93.0.0"
+  _flutterfire_internals:
+    dependency: transitive
+    description:
+      name: _flutterfire_internals
+      sha256: ff0a84a2734d9e1089f8aedd5c0af0061b82fb94e95260d943404e0ef2134b11
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.59"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: de7148ed2fcec579b19f122c1800933dfa028f6d9fd38a152b04b1516cec120b
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.0.1"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: "758e6d74e971c3e5aceb4110bfd6698efc7f501675bcfe0c775459a8140750eb"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      sha256: "275bf6bb2a00a9852c28d4e0b410da1d833a734d57d39d44f94bfc895a484ec3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.4"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      sha256: "4070d2a59f8eec34c97c86ceb44403834899075f66e8a9d59706f8e7834f6f71"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      sha256: bf05f6e12cfea92d3c09308d7bcdab1906cd8a179b023269eed00c071004b957
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.1"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      sha256: "7981eb922842c77033026eb4341d5af651562008cdb116bdfa31fc46516b6462"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.12.2"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      sha256: "376e3dd27b51ea877c28d525560790aee2e6fbb5f20e2f85d5081027d94e2100"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.1"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      sha256: "6ae8a6435a8c6520c7077b107e77f1fb4ba7009633259a4d49a8afd8e7efc5e9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.12.4"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      sha256: "959525d3162f249993882720d52b7e0c833978df229be20702b33d48d91de70f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.4"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  code_assets:
+    dependency: transitive
+    description:
+      name: code_assets
+      sha256: "83ccdaa064c980b5596c35dd64a8d3ecc68620174ab9b90b6343b753aa721687"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  code_builder:
+    dependency: transitive
+    description:
+      name: code_builder
+      sha256: "6a6cab2ba4680d6423f34a9b972a4c9a94ebe1b62ecec4e1a1f2cba91fd1319d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.11.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: b30acd5944035672bc15c6b7a8b47d773e41e2f17de064350988c5d02adb1c68
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      sha256: "6f6b30cba0301e7b38f32bdc9a6bdae6f5921a55f0a1eb9450e1e6515645dbb2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      sha256: d0c98dcd4f5169878b6cf8f6e0a52403a9dff371a3e2f019697accbf6f44a270
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.12"
+  dio:
+    dependency: "direct main"
+    description:
+      name: dio
+      sha256: aff32c08f92787a557dd5c0145ac91536481831a01b4648136373cddb0e64f8c
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.9.2"
+  dio_web_adapter:
+    dependency: transitive
+    description:
+      name: dio_web_adapter
+      sha256: "2f9e64323a7c3c7ef69567d5c800424a11f8337b8b228bad02524c9fb3c1f340"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.3"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "6d7fd89431262d8f3125e81b50d3847a091d846eafcd4fdb88dd06f36d705a45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  firebase_core:
+    dependency: "direct main"
+    description:
+      name: firebase_core
+      sha256: "7be63a3f841fc9663342f7f3a011a42aef6a61066943c90b1c434d79d5c995c5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.15.2"
+  firebase_core_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_core_platform_interface
+      sha256: cccb4f572325dc14904c02fcc7db6323ad62ba02536833dddb5c02cac7341c64
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.2"
+  firebase_core_web:
+    dependency: transitive
+    description:
+      name: firebase_core_web
+      sha256: "0ed0dc292e8f9ac50992e2394e9d336a0275b6ae400d64163fdf0a8a8b556c37"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.24.1"
+  firebase_messaging:
+    dependency: "direct main"
+    description:
+      name: firebase_messaging
+      sha256: "60be38574f8b5658e2f22b7e311ff2064bea835c248424a383783464e8e02fcc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.2.10"
+  firebase_messaging_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_messaging_platform_interface
+      sha256: "685e1771b3d1f9c8502771ccc9f91485b376ffe16d553533f335b9183ea99754"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.6.10"
+  firebase_messaging_web:
+    dependency: transitive
+    description:
+      name: firebase_messaging_web
+      sha256: "0d1be17bc89ed3ff5001789c92df678b2e963a51b6fa2bdb467532cc9dbed390"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.10.10"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_lints:
+    dependency: "direct dev"
+    description:
+      name: flutter_lints
+      sha256: "3f41d009ba7172d5ff9be5f6e6e6abb4300e263aab8866d2a0842ed2a70f8f0c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0"
+  flutter_local_notifications:
+    dependency: "direct main"
+    description:
+      name: flutter_local_notifications
+      sha256: "674173fd3c9eda9d4c8528da2ce0ea69f161577495a9cc835a2a4ecd7eadeb35"
+      url: "https://pub.dev"
+    source: hosted
+    version: "17.2.4"
+  flutter_local_notifications_linux:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_linux
+      sha256: c49bd06165cad9beeb79090b18cd1eb0296f4bf4b23b84426e37dd7c027fc3af
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.1"
+  flutter_local_notifications_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_platform_interface
+      sha256: "85f8d07fe708c1bdcf45037f2c0109753b26ae077e9d9e899d55971711a4ea66"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
+  flutter_secure_storage:
+    dependency: "direct main"
+    description:
+      name: flutter_secure_storage
+      sha256: da922f2aab2d733db7e011a6bcc4a825b844892d4edd6df83ff156b09a9b2e40
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.0.0"
+  flutter_secure_storage_darwin:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_darwin
+      sha256: "8878c25136a79def1668c75985e8e193d9d7d095453ec28730da0315dc69aee3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.0"
+  flutter_secure_storage_linux:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_linux
+      sha256: "2b5c76dce569ab752d55a1cee6a2242bcc11fdba927078fb88c503f150767cda"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  flutter_secure_storage_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_platform_interface
+      sha256: "8ceea1223bee3c6ac1a22dabd8feefc550e4729b3675de4b5900f55afcb435d6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.1"
+  flutter_secure_storage_web:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_web
+      sha256: "6a1137df62b84b54261dca582c1c09ea72f4f9a4b2fcee21b025964132d5d0c3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  flutter_secure_storage_windows:
+    dependency: transitive
+    description:
+      name: flutter_secure_storage_windows
+      sha256: "3b7c8e068875dfd46719ff57c90d8c459c87f2302ed6b00ff006b3c9fcad1613"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      sha256: "741bbf84165310a68ff28fe9e727332eef1407342fca52759cb21ad8177bb8d0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.2"
+  hooks:
+    dependency: transitive
+    description:
+      name: hooks
+      sha256: e79ed1e8e1929bc6ecb6ec85f0cb519c887aa5b423705ded0d0f2d9226def388
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: aa6199f908078bb1c5efb8d8638d4ae191aac11b311132c3ef48ce352fb52ef8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.2"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.5"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: "53385261521cc4a0c4658fd0ad07a7d14591cf8fc33abbceae306ddb974888dc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.2"
+  js_notifications:
+    dependency: transitive
+    description:
+      name: js_notifications
+      sha256: "980280649b29d618669866bdbf99e4a813009033101a434652d231eaf976c975"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.5"
+  json_annotation:
+    dependency: "direct main"
+    description:
+      name: json_annotation
+      sha256: cb09e7dac6210041fad964ed7fbee004f14258b4eca4040f72d1234062ace4c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.11.0"
+  json_serializable:
+    dependency: "direct dev"
+    description:
+      name: json_serializable
+      sha256: "44729f5c45748e6748f6b9a57ab8f7e4336edc8ae41fc295070e3814e616a6c0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.13.0"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: "33e2e26bdd85a0112ec15400c8cbffea70d0f9c3407491f672a2fad47915e2de"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.0.2"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: "1dbc140bb5a23c75ea9c4811222756104fbcd1a27173f0c34ca01e16bea473c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.10"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: "8d5a2d49f4a66b49744b23b018848400d23e54caf9463f4eb20df3eb8acb2eb1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  lints:
+    dependency: transitive
+    description:
+      name: lints
+      sha256: "976c774dd944a42e83e2467f4cc670daef7eed6295b10b36ae8c85bcbf828235"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: dc0b7dc7651697ea4ff3e69ef44b0407ea32c487a39fff6a4004fa585e901861
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.19"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "23f08335362185a5ea2ad3a4e597f1375e78bce8a040df5c600c8d3552ef2394"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.17.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  native_toolchain_c:
+    dependency: transitive
+    description:
+      name: native_toolchain_c
+      sha256: "92b2ca62c8bd2b8d2f267cdfccf9bfbdb7322f778f8f91b3ce5b5cda23a3899f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.17.5"
+  nested:
+    dependency: transitive
+    description:
+      name: nested
+      sha256: "03bac4c528c64c95c722ec99280375a6f2fc708eec17c7b3f07253b626cd2a20"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  objective_c:
+    dependency: transitive
+    description:
+      name: objective_c
+      sha256: "100a1c87616ab6ed41ec263b083c0ef3261ee6cd1dc3b0f35f8ddfa4f996fe52"
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.3.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.5"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: f2c65e21139ce2c3dad46922be8272bb5963516045659e71bb16e151c93b580e
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.22"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "2a376b7d6392d80cd3705782d2caa734ca4727776db0b6ec36ef3f1855197699"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.0"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: f7a1fe3a634fe7734c8d3f2766ad746ae2a2884abe22e241a8b301bf5cac3279
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.1"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: "88f5779f72ba699763fa3a3b06aa4bf6de76c8e5de842cf6f29e2e06476c2334"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: bd6f00dbd873bfb70d0761682da2b3a2c2fccc2b9e84c495821639601d81afe7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      sha256: "91bd59303e9f769f108f8df05e371341b15d59e995e6806aefab827b58336675"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.2"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "5d6b1b0036a5f331ebc77c850ebc8506cbc1e9416c27e59b439f917a902a4984"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "978783255c543aa3586a1b3c21f6e9d720eb315376a915872c61ef8b5c20177d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.2"
+  provider:
+    dependency: "direct main"
+    description:
+      name: provider
+      sha256: "4e82183fa20e5ca25703ead7e05de9e4cceed1fbd1eadc1ac3cb6f565a09f272"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.5+1"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      sha256: "0560ba233314abbed0a48a2956f7f022cce7c3e1e73df540277da7544cad4082"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.0"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.2"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "3632775c8e90d6c9712f883e633716432a27758216dfb61bd86a8321c0580925"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
+  simple_print:
+    dependency: transitive
+    description:
+      name: simple_print
+      sha256: "49b6796fb93b557bbba4eca687b8521d3d20ffee47d74d8a0857f6ee0727042b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.1+2"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  source_gen:
+    dependency: transitive
+    description:
+      name: source_gen
+      sha256: "1d562a3c1f713904ebbed50d2760217fd8a51ca170ac4b05b0db490699dbac17"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.2.0"
+  source_helper:
+    dependency: transitive
+    description:
+      name: source_helper
+      sha256: "4a85e90b50694e652075cbe4575665539d253e6ec10e46e76b45368ab5e3caae"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.10"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "56a02f1f4cd1a2d96303c0144c93bd6d909eea6bee6bf5a0e0b685edbd4c47ab"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.2"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.12.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      sha256: ad47125e588cfd37a9a7f86c7d6356dde8dfe89d071d293f80ca9e9273a33871
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "8161c84903fd860b26bfdefb7963b3f0b68fee7adea0f59ef805ecca346f0c7a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.10"
+  timezone:
+    dependency: transitive
+    description:
+      name: timezone
+      sha256: "2236ec079a174ce07434e89fcd3fcda430025eb7692244139a9cf54fdcf1fc7d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
+  twilio_voice:
+    dependency: "direct main"
+    description:
+      name: twilio_voice
+      sha256: "010ac416dc8bcc842486407aec2e6f97fd5bb34b521c04fd4a4a5710f9ec045b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.2+2"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: "1fef9e8e11e2991bb773070d4656b7bd5d850967a2456cfc83cf47925ba79489"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.5.3"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      sha256: d530bd74fea330e6e364cda7a85019c434070188383e1cd8d9777ee586914c5b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: "45caa6c5917fa127b5dbcfbd1fa60b14e583afdc08bfc96dda38886ca252eb60"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.0.2"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "1398c9f081a753f9226febe8900fce8f7d0a67163334e1c94a2438339d79d635"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  web_callkit:
+    dependency: transitive
+    description:
+      name: web_callkit
+      sha256: ca05b0fd79366ea072c1ea4982c8a7880ad219e4d1cc74a3a541b010533febee
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.4+1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "34d64019aa8e36bf9842ac014bb5d2f5586ca73df5e4d9bf5c936975cae6982c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: d645757fb0f4773d602444000a8131ff5d48c9e47adfe9772652dd1a4f2d45c8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: d7cb55e04cd34096cd3a79b3330245f54cb96a370a1c27adb3c84b917de8b08e
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.15.0"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: "7a3f37b05d989967cdddcbb571f1ea834867ae2faa29725fd085180e0883aa15"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      sha256: "971043b3a0d3da28727e40ed3e0b5d18b742fa5a68665cca88e74b7876d5e025"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.6.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.3"
+sdks:
+  dart: ">=3.10.3 <4.0.0"
+  flutter: ">=3.38.4"

mobile/pubspec.yaml

@@ -0,0 +1,29 @@
+name: twp_softphone
+description: TWP Softphone - VoIP client for Twilio WordPress Plugin
+publish_to: 'none'
+version: 1.0.0+1
+
+environment:
+  sdk: ^3.5.0
+
+dependencies:
+  flutter:
+    sdk: flutter
+  twilio_voice: ^0.3.0
+  firebase_core: ^3.0.0
+  firebase_messaging: ^15.0.0
+  dio: ^5.4.0
+  flutter_secure_storage: ^10.0.0
+  provider: ^6.1.0
+  flutter_local_notifications: ^17.0.0
+  json_annotation: ^4.8.0
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^4.0.0
+  build_runner: ^2.4.0
+  json_serializable: ^6.7.0
+
+flutter:
+  uses-material-design: true

mobile/test/call_info_test.dart

@@ -0,0 +1,129 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:twp_softphone/models/call_info.dart';
+
+void main() {
+  group('CallInfo', () {
+    test('default state is idle', () {
+      const info = CallInfo();
+      expect(info.state, CallState.idle);
+      expect(info.callSid, isNull);
+      expect(info.callerNumber, isNull);
+      expect(info.duration, Duration.zero);
+      expect(info.isMuted, false);
+      expect(info.isSpeakerOn, false);
+      expect(info.isOnHold, false);
+    });
+
+    test('isActive returns true for ringing, connecting, connected', () {
+      expect(const CallInfo(state: CallState.ringing).isActive, true);
+      expect(const CallInfo(state: CallState.connecting).isActive, true);
+      expect(const CallInfo(state: CallState.connected).isActive, true);
+    });
+
+    test('isActive returns false for idle and disconnected', () {
+      expect(const CallInfo(state: CallState.idle).isActive, false);
+      expect(const CallInfo(state: CallState.disconnected).isActive, false);
+    });
+
+    test('copyWith preserves unmodified fields', () {
+      const original = CallInfo(
+        state: CallState.connected,
+        callSid: 'CA123',
+        callerNumber: '+1234567890',
+        isMuted: true,
+      );
+
+      final modified = original.copyWith(isSpeakerOn: true);
+      expect(modified.state, CallState.connected);
+      expect(modified.callSid, 'CA123');
+      expect(modified.callerNumber, '+1234567890');
+      expect(modified.isMuted, true);
+      expect(modified.isSpeakerOn, true);
+    });
+
+    test('copyWith can change state', () {
+      const info = CallInfo(state: CallState.connecting);
+      final updated = info.copyWith(state: CallState.connected);
+      expect(updated.state, CallState.connected);
+    });
+
+    test('copyWith with callerNumber preserves it', () {
+      const info = CallInfo(callerNumber: '+19095737372');
+      final updated = info.copyWith(state: CallState.connected);
+      expect(updated.callerNumber, '+19095737372');
+    });
+
+    test('reset to idle clears all fields', () {
+      // Verify a complex state exists
+      const connected = CallInfo(
+        state: CallState.connected,
+        callSid: 'CA123',
+        callerNumber: '+1234567890',
+        isMuted: true,
+        isSpeakerOn: true,
+        isOnHold: true,
+        duration: Duration(seconds: 30),
+      );
+      expect(connected.isActive, true);
+
+      // Simulating what callEnded does
+      const reset = CallInfo();
+      expect(reset.state, CallState.idle);
+      expect(reset.callSid, isNull);
+      expect(reset.callerNumber, isNull);
+      expect(reset.isActive, false);
+    });
+  });
+
+  group('CallState transitions', () {
+    test('outbound call flow: idle -> connecting -> connected -> idle', () {
+      var info = const CallInfo();
+      expect(info.state, CallState.idle);
+
+      // makeCall sets connecting + callerNumber
+      info = info.copyWith(state: CallState.connecting, callerNumber: '+19095737372');
+      expect(info.state, CallState.connecting);
+      expect(info.callerNumber, '+19095737372');
+      expect(info.isActive, true);
+
+      // SDK fires connected
+      info = info.copyWith(state: CallState.connected);
+      expect(info.state, CallState.connected);
+      expect(info.callerNumber, '+19095737372'); // preserved
+      expect(info.isActive, true);
+
+      // callEnded resets
+      info = const CallInfo();
+      expect(info.state, CallState.idle);
+      expect(info.isActive, false);
+    });
+
+    test('inbound call flow: idle -> ringing -> connected -> idle', () {
+      var info = const CallInfo();
+
+      info = info.copyWith(state: CallState.ringing);
+      expect(info.isActive, true);
+
+      // callerNumber set from active.from
+      info = info.copyWith(callerNumber: '+18005551234');
+      expect(info.callerNumber, '+18005551234');
+
+      info = info.copyWith(state: CallState.connected);
+      expect(info.state, CallState.connected);
+
+      info = const CallInfo();
+      expect(info.state, CallState.idle);
+    });
+
+    test('outbound callerNumber not overwritten by null copyWith', () {
+      var info = const CallInfo(
+        state: CallState.connecting,
+        callerNumber: '+19095737372',
+      );
+
+      // copyWith without callerNumber should preserve it
+      info = info.copyWith(state: CallState.connected);
+      expect(info.callerNumber, '+19095737372');
+    });
+  });
+}

mobile/test/call_provider_test.dart

@@ -0,0 +1,367 @@
+import 'dart:async';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:twilio_voice/twilio_voice.dart';
+import 'package:twp_softphone/models/call_info.dart';
+import 'package:twp_softphone/providers/call_provider.dart';
+import 'package:twp_softphone/services/voice_service.dart';
+
+/// Minimal mock of VoiceService for testing CallProvider logic.
+/// Only stubs methods that CallProvider calls directly.
+class MockVoiceService implements VoiceService {
+  final StreamController<CallEvent> _eventController =
+      StreamController<CallEvent>.broadcast();
+  bool makeCallResult = true;
+  bool acceptQueueCallShouldThrow = false;
+  String? lastCallTo;
+  String? lastCallerId;
+  bool answerCalled = false;
+  bool hangUpCalled = false;
+
+  @override
+  Stream<CallEvent> get callEvents => _eventController.stream;
+
+  void emitEvent(CallEvent event) => _eventController.add(event);
+
+  @override
+  Future<bool> makeCall(String to, {String? callerId}) async {
+    lastCallTo = to;
+    lastCallerId = callerId;
+    return makeCallResult;
+  }
+
+  @override
+  Future<void> answer() async {
+    answerCalled = true;
+  }
+
+  @override
+  Future<void> hangUp() async {
+    hangUpCalled = true;
+  }
+
+  @override
+  Future<void> reject() async {}
+
+  @override
+  Future<void> toggleMute(bool mute) async {}
+
+  @override
+  Future<void> toggleSpeaker(bool speaker) async {}
+
+  @override
+  Future<void> sendDigits(String digits) async {}
+
+  @override
+  Future<List<Map<String, dynamic>>> getQueueCalls(int queueId) async => [];
+
+  @override
+  Future<void> acceptQueueCall(String callSid) async {
+    if (acceptQueueCallShouldThrow) {
+      throw Exception('Network error');
+    }
+  }
+
+  @override
+  Future<void> holdCall(String callSid) async {}
+
+  @override
+  Future<void> unholdCall(String callSid) async {}
+
+  @override
+  Future<void> transferCall(String callSid, String target) async {}
+
+  @override
+  Future<void> initialize({String? deviceToken}) async {}
+
+  @override
+  String? get identity => 'agent2testuser';
+
+  @override
+  void dispose() {
+    _eventController.close();
+  }
+
+  // Unused stubs required by the interface
+  @override
+  dynamic noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+void main() {
+  group('CallProvider.makeCall', () {
+    late MockVoiceService mockVoice;
+    late CallProvider provider;
+
+    setUp(() {
+      mockVoice = MockVoiceService();
+      provider = CallProvider(mockVoice);
+    });
+
+    tearDown(() {
+      provider.dispose();
+      mockVoice.dispose();
+    });
+
+    test('sets state to connecting and passes number', () async {
+      mockVoice.makeCallResult = true;
+      await provider.makeCall('+19095737372');
+
+      expect(mockVoice.lastCallTo, '+19095737372');
+      expect(provider.callInfo.state, CallState.connecting);
+      expect(provider.callInfo.callerNumber, '+19095737372');
+    });
+
+    test('passes callerId when provided', () async {
+      mockVoice.makeCallResult = true;
+      await provider.makeCall('+19095737372', callerId: '+19516215107');
+
+      expect(mockVoice.lastCallerId, '+19516215107');
+    });
+
+    test('resets to idle when call.place() returns false', () async {
+      mockVoice.makeCallResult = false;
+      await provider.makeCall('+19095737372');
+
+      expect(provider.callInfo.state, CallState.idle);
+      expect(provider.callInfo.callerNumber, isNull);
+    });
+
+    test('stays connecting when call.place() returns true', () async {
+      mockVoice.makeCallResult = true;
+      await provider.makeCall('+19095737372');
+
+      expect(provider.callInfo.state, CallState.connecting);
+      expect(provider.callInfo.callerNumber, '+19095737372');
+    });
+  });
+
+  group('CallProvider.hangUp', () {
+    late MockVoiceService mockVoice;
+    late CallProvider provider;
+
+    setUp(() {
+      mockVoice = MockVoiceService();
+      provider = CallProvider(mockVoice);
+    });
+
+    tearDown(() {
+      provider.dispose();
+      mockVoice.dispose();
+    });
+
+    test('resets to idle even if SDK does not fire callEnded', () async {
+      // Simulate a connecting state
+      mockVoice.makeCallResult = true;
+      await provider.makeCall('+19095737372');
+      expect(provider.callInfo.state, CallState.connecting);
+
+      // Hang up without SDK firing callEnded
+      await provider.hangUp();
+
+      expect(provider.callInfo.state, CallState.idle);
+      expect(provider.callInfo.callerNumber, isNull);
+      expect(mockVoice.hangUpCalled, true);
+    });
+  });
+
+  group('CallProvider state transitions', () {
+    test('outbound: connecting preserves callerNumber through state changes', () {
+      // Simulating what CallProvider does internally
+      var info = const CallInfo();
+
+      // makeCall sets connecting + callerNumber
+      info = info.copyWith(state: CallState.connecting, callerNumber: '+19095737372');
+      expect(info.state, CallState.connecting);
+      expect(info.callerNumber, '+19095737372');
+
+      // SDK fires connected — callerNumber preserved
+      info = info.copyWith(state: CallState.connected);
+      expect(info.state, CallState.connected);
+      expect(info.callerNumber, '+19095737372');
+    });
+
+    test('makeCall failure resets cleanly to idle', () {
+      var info = const CallInfo();
+
+      // makeCall sets connecting
+      info = info.copyWith(state: CallState.connecting, callerNumber: '+19095737372');
+      expect(info.state, CallState.connecting);
+
+      // call.place() returns false -> reset
+      info = const CallInfo();
+      expect(info.state, CallState.idle);
+      expect(info.callerNumber, isNull);
+      expect(info.isActive, false);
+    });
+  });
+
+  group('CallProvider.acceptQueueCall', () {
+    late MockVoiceService mockVoice;
+    late CallProvider provider;
+
+    setUp(() {
+      mockVoice = MockVoiceService();
+      provider = CallProvider(mockVoice);
+    });
+
+    tearDown(() {
+      provider.dispose();
+      mockVoice.dispose();
+    });
+
+    test('sets state to connecting before server call', () async {
+      await provider.acceptQueueCall('CA123abc');
+      expect(provider.callInfo.state, CallState.connecting);
+    });
+
+    test('auto-answers incoming call after acceptQueueCall', () async {
+      await provider.acceptQueueCall('CA123abc');
+
+      // Simulate the FCM incoming call event that arrives after server redirect
+      mockVoice.emitEvent(CallEvent.incoming);
+
+      // Allow the stream listener to process
+      await Future.delayed(Duration.zero);
+
+      // Should have auto-answered
+      expect(mockVoice.answerCalled, true);
+      expect(provider.callInfo.state, CallState.connecting);
+    });
+
+    test('normal incoming call shows ringing without auto-answer', () async {
+      // Without calling acceptQueueCall first
+      mockVoice.emitEvent(CallEvent.incoming);
+
+      await Future.delayed(Duration.zero);
+
+      expect(mockVoice.answerCalled, false);
+      expect(provider.callInfo.state, CallState.ringing);
+    });
+
+    test('connected event after auto-answer sets connected state', () async {
+      await provider.acceptQueueCall('CA123abc');
+
+      mockVoice.emitEvent(CallEvent.incoming);
+      await Future.delayed(Duration.zero);
+      expect(mockVoice.answerCalled, true);
+
+      mockVoice.emitEvent(CallEvent.connected);
+      await Future.delayed(Duration.zero);
+      expect(provider.callInfo.state, CallState.connected);
+    });
+
+    test('resets to idle on API error and clears pendingAutoAnswer', () async {
+      mockVoice.acceptQueueCallShouldThrow = true;
+      await provider.acceptQueueCall('CA123abc');
+
+      // Should have reset to idle after error
+      expect(provider.callInfo.state, CallState.idle);
+
+      // Future incoming call should NOT be auto-answered
+      mockVoice.emitEvent(CallEvent.incoming);
+      await Future.delayed(Duration.zero);
+      expect(mockVoice.answerCalled, false);
+      expect(provider.callInfo.state, CallState.ringing);
+    });
+  });
+
+  group('CallProvider.hangUp edge cases', () {
+    late MockVoiceService mockVoice;
+    late CallProvider provider;
+
+    setUp(() {
+      mockVoice = MockVoiceService();
+      provider = CallProvider(mockVoice);
+    });
+
+    tearDown(() {
+      provider.dispose();
+      mockVoice.dispose();
+    });
+
+    test('hangUp when already idle is a no-op', () async {
+      expect(provider.callInfo.state, CallState.idle);
+      await provider.hangUp();
+      expect(provider.callInfo.state, CallState.idle);
+      expect(mockVoice.hangUpCalled, true);
+    });
+
+    test('hangUp clears pendingAutoAnswer flag', () async {
+      await provider.acceptQueueCall('CA123abc');
+      expect(provider.callInfo.state, CallState.connecting);
+
+      await provider.hangUp();
+      expect(provider.callInfo.state, CallState.idle);
+
+      // Incoming call should NOT auto-answer after hangUp cleared the flag
+      mockVoice.emitEvent(CallEvent.incoming);
+      await Future.delayed(Duration.zero);
+      expect(mockVoice.answerCalled, false);
+      expect(provider.callInfo.state, CallState.ringing);
+    });
+  });
+
+  group('CallProvider.toggleMute and toggleSpeaker', () {
+    late MockVoiceService mockVoice;
+    late CallProvider provider;
+
+    setUp(() {
+      mockVoice = MockVoiceService();
+      provider = CallProvider(mockVoice);
+    });
+
+    tearDown(() {
+      provider.dispose();
+      mockVoice.dispose();
+    });
+
+    test('toggleMute flips isMuted state', () async {
+      expect(provider.callInfo.isMuted, false);
+      await provider.toggleMute();
+      expect(provider.callInfo.isMuted, true);
+      await provider.toggleMute();
+      expect(provider.callInfo.isMuted, false);
+    });
+
+    test('toggleSpeaker flips isSpeakerOn state', () async {
+      expect(provider.callInfo.isSpeakerOn, false);
+      await provider.toggleSpeaker();
+      expect(provider.callInfo.isSpeakerOn, true);
+      await provider.toggleSpeaker();
+      expect(provider.callInfo.isSpeakerOn, false);
+    });
+  });
+
+  group('CallProvider.callEnded', () {
+    late MockVoiceService mockVoice;
+    late CallProvider provider;
+
+    setUp(() {
+      mockVoice = MockVoiceService();
+      provider = CallProvider(mockVoice);
+    });
+
+    tearDown(() {
+      provider.dispose();
+      mockVoice.dispose();
+    });
+
+    test('callEnded resets state completely', () async {
+      // Set up a connected call
+      mockVoice.makeCallResult = true;
+      await provider.makeCall('+19095737372');
+
+      mockVoice.emitEvent(CallEvent.connected);
+      await Future.delayed(Duration.zero);
+      expect(provider.callInfo.state, CallState.connected);
+      expect(provider.callInfo.callerNumber, '+19095737372');
+
+      // End the call
+      mockVoice.emitEvent(CallEvent.callEnded);
+      await Future.delayed(Duration.zero);
+      expect(provider.callInfo.state, CallState.idle);
+      expect(provider.callInfo.callerNumber, isNull);
+      expect(provider.callInfo.callSid, isNull);
+      expect(provider.callInfo.isActive, false);
+    });
+  });
+}

mobile/test/queue_state_test.dart

@@ -0,0 +1,92 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:twp_softphone/models/queue_state.dart';
+
+void main() {
+  group('QueueInfo', () {
+    test('parses from JSON with all fields', () {
+      final json = {
+        'id': 1,
+        'name': 'General',
+        'type': 'general',
+        'extension': '100',
+        'waiting_count': 3,
+      };
+
+      final queue = QueueInfo.fromJson(json);
+      expect(queue.id, 1);
+      expect(queue.name, 'General');
+      expect(queue.type, 'general');
+      expect(queue.extension, '100');
+      expect(queue.waitingCount, 3);
+    });
+
+    test('parses from JSON with string numbers', () {
+      final json = {
+        'id': '5',
+        'name': 'Support',
+        'type': 'personal',
+        'waiting_count': '0',
+      };
+
+      final queue = QueueInfo.fromJson(json);
+      expect(queue.id, 5);
+      expect(queue.waitingCount, 0);
+      expect(queue.extension, isNull);
+    });
+
+    test('handles missing fields gracefully', () {
+      final json = <String, dynamic>{};
+      final queue = QueueInfo.fromJson(json);
+      expect(queue.id, 0);
+      expect(queue.name, '');
+      expect(queue.type, '');
+      expect(queue.extension, isNull);
+      expect(queue.waitingCount, 0);
+    });
+  });
+
+  group('QueueCall', () {
+    test('parses from JSON', () {
+      final json = {
+        'call_sid': 'CA123abc',
+        'from_number': '+18005551234',
+        'to_number': '+19095737372',
+        'position': 1,
+        'status': 'waiting',
+        'wait_time': 45,
+      };
+
+      final call = QueueCall.fromJson(json);
+      expect(call.callSid, 'CA123abc');
+      expect(call.fromNumber, '+18005551234');
+      expect(call.toNumber, '+19095737372');
+      expect(call.position, 1);
+      expect(call.status, 'waiting');
+      expect(call.waitTime, 45);
+    });
+
+    test('handles string wait_time', () {
+      final json = {
+        'call_sid': 'CA456',
+        'from_number': '+1800',
+        'to_number': '+1900',
+        'position': '2',
+        'status': 'waiting',
+        'wait_time': '120',
+      };
+
+      final call = QueueCall.fromJson(json);
+      expect(call.position, 2);
+      expect(call.waitTime, 120);
+    });
+
+    test('handles missing fields gracefully', () {
+      final json = <String, dynamic>{};
+      final call = QueueCall.fromJson(json);
+      expect(call.callSid, '');
+      expect(call.fromNumber, '');
+      expect(call.position, 0);
+      expect(call.waitTime, 0);
+    });
+  });
+}

mobile/test/widget_test.dart

@@ -0,0 +1,7 @@
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('placeholder test', () {
+    expect(1 + 1, 2);
+  });
+}

twilio-wp-plugin.php

@@ -20,6 +20,8 @@ define('TWP_DB_VERSION', '1.6.2'); // Track database version separately
 define('TWP_PLUGIN_DIR', plugin_dir_path(__FILE__));
 define('TWP_PLUGIN_URL', plugin_dir_url(__FILE__));
 define('TWP_PLUGIN_BASENAME', plugin_basename(__FILE__));
+// External SDK location - survives plugin updates (wp-content/twilio-sdk/)
+define('TWP_EXTERNAL_SDK_DIR', dirname(dirname(TWP_PLUGIN_DIR)) . '/twilio-sdk/');
 
 /**
  * Plugin activation hook
@@ -31,17 +33,27 @@ function twp_activate() {
 
 /**
  * Check if Twilio SDK is installed and show admin notice if not
+ * Checks external location first (survives plugin updates), then internal fallback
  */
 function twp_check_sdk_installation() {
-    $autoloader_path = TWP_PLUGIN_DIR . 'vendor/autoload.php';
     $sdk_installed = false;
-    
-    if (file_exists($autoloader_path)) {
-        // Try to load autoloader and check for classes
-        require_once $autoloader_path;
+
+    // Priority 1: Check external SDK location (survives plugin updates)
+    $external_autoloader = TWP_EXTERNAL_SDK_DIR . 'autoload.php';
+    if (file_exists($external_autoloader)) {
+        require_once $external_autoloader;
         $sdk_installed = class_exists('Twilio\Rest\Client');
     }
-    
+
+    // Priority 2: Fall back to internal vendor directory
+    if (!$sdk_installed) {
+        $internal_autoloader = TWP_PLUGIN_DIR . 'vendor/autoload.php';
+        if (file_exists($internal_autoloader)) {
+            require_once $internal_autoloader;
+            $sdk_installed = class_exists('Twilio\Rest\Client');
+        }
+    }
+
     if (!$sdk_installed) {
         add_action('admin_notices', 'twp_sdk_missing_notice');
     }
@@ -55,10 +67,12 @@ function twp_sdk_missing_notice() {
     <div class="notice notice-error is-dismissible">
         <h3>Twilio WordPress Plugin - SDK Required</h3>
         <p><strong>The Twilio PHP SDK is required for this plugin to work.</strong></p>
-        <p>To install the SDK, run this command in your plugin directory:</p>
+        <p><strong>Recommended:</strong> Install SDK to external location (survives plugin updates):</p>
+        <code>chmod +x install-twilio-sdk-external.sh && ./install-twilio-sdk-external.sh</code>
+        <p style="margin-top: 10px;"><strong>Alternative:</strong> Install SDK inside plugin folder:</p>
         <code>chmod +x install-twilio-sdk.sh && ./install-twilio-sdk.sh</code>
-        <p>Or install via Composer: <code>composer install</code></p>
-        <p><em>Plugin path: <?php echo TWP_PLUGIN_DIR; ?></em></p>
+        <p style="margin-top: 10px;"><em>Plugin path: <?php echo esc_html(TWP_PLUGIN_DIR); ?></em></p>
+        <p><em>External SDK path: <?php echo esc_html(TWP_EXTERNAL_SDK_DIR); ?></em></p>
     </div>
     <?php
 }
@@ -126,6 +140,52 @@ function twp_deactivate() {
 register_activation_hook(__FILE__, 'twp_activate');
 register_deactivation_hook(__FILE__, 'twp_deactivate');
 
+/**
+ * Check SDK status after plugin updates
+ * Shows warning if SDK was deleted during update and external SDK not available
+ */
+function twp_check_sdk_after_update($upgrader_object, $options) {
+    // Only run for plugin updates
+    if ($options['action'] !== 'update' || $options['type'] !== 'plugin') {
+        return;
+    }
+
+    // Check if this plugin was updated
+    $updated_plugins = isset($options['plugins']) ? $options['plugins'] : array();
+    if (!in_array(TWP_PLUGIN_BASENAME, $updated_plugins)) {
+        return;
+    }
+
+    // Check if SDK is available
+    $external_sdk = file_exists(TWP_EXTERNAL_SDK_DIR . 'autoload.php');
+    $internal_sdk = file_exists(TWP_PLUGIN_DIR . 'vendor/autoload.php');
+
+    if (!$external_sdk && !$internal_sdk) {
+        // Set a transient to show warning on next admin page load
+        set_transient('twp_sdk_update_warning', true, 60 * 5);
+    }
+}
+add_action('upgrader_process_complete', 'twp_check_sdk_after_update', 10, 2);
+
+/**
+ * Show SDK update warning
+ */
+function twp_show_sdk_update_warning() {
+    if (get_transient('twp_sdk_update_warning')) {
+        delete_transient('twp_sdk_update_warning');
+        ?>
+        <div class="notice notice-warning is-dismissible">
+            <h3>Twilio WordPress Plugin - SDK Reinstall Required</h3>
+            <p><strong>The plugin was updated and the Twilio SDK needs to be reinstalled.</strong></p>
+            <p>To prevent this in the future, install the SDK to the external location:</p>
+            <code>cd <?php echo esc_html(TWP_PLUGIN_DIR); ?> && ./install-twilio-sdk-external.sh</code>
+            <p style="margin-top: 10px;">The external SDK at <code><?php echo esc_html(TWP_EXTERNAL_SDK_DIR); ?></code> survives plugin updates.</p>
+        </div>
+        <?php
+    }
+}
+add_action('admin_notices', 'twp_show_sdk_update_warning');
+
 /**
  * Core plugin class
  */