# MRT-M10: Known mobile issues and workarounds document
**Area:** Mobile-Responsive Testing
**Model:** minimax/minimax-m2.5
**Tokens:** 7,166
**Cost:** $0.0072
**Time:** 10141ms
**Timestamp:** 2026-02-16T12:19:41.782211

---

# Known Mobile Issues & Workarounds

**Document Type:** Living Reference — Issue Tracker  
**Product:** Sunaiva Talking Widget  
**Version:** 1.0  
**Last Updated:** January 2025  
**Owner:** Technical Support / Product Engineering  

---

## Purpose

This document serves as the central repository for known mobile browser and device-specific issues affecting Sunaiva Talking Widget functionality. Each entry includes root cause analysis, affected environments, severity rating, and actionable workarounds.

**This is a living document.** Submit new issues via the internal issue tracker with the `mobile-known-issues` tag. Review and update quarterly.

---

## Quick Reference: Issue Summary

| # | Issue | Platform | Severity | Workaround Status |
|---|-------|----------|----------|-------------------|
| 1 | iOS Safari Autoplay Restrictions | iOS Safari | High | Stable |
| 2 | Android Chrome Permission Prompts | Android Chrome | High | Stable |
| 3 | Samsung Internet WebRTC Quirks | Samsung Internet | Medium | Stable |
| 4 | Background Audio Session Interruption | iOS / Android | High | Stable |
| 5 | Push Notification Permission Variations | iOS / Android | Medium | Stable |
| 6 | Hardware Echo Cancellation Variance | Multiple | Medium | Stable |
| 7 | Bluetooth Audio Routing Inconsistency | iOS / Android | Medium | In Progress |
| 8 | Battery Optimization Killing Connections | Android | High | Stable |
| 9 | Network Transition (WiFi ↔ Cellular) | iOS / Android | High | Stable |
| 10 | Progressive Web App Installation Barriers | Multiple | Low | Stable |

---

## Detailed Issue Entries

---

### Issue #1: iOS Safari Autoplay Restrictions

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-001 |
| **Platform** | iOS 15+ Safari |
| **Component** | Audio Playback / WebRTC |
| **Severity** | High |
| **First Reported** | v1.2.0 |
| **Status** | Known — Stable Workaround |

#### Description

iOS Safari enforces strict autoplay policies that prevent audio from playing without explicit user interaction. The Talking Widget's initial greeting or notification sounds fail to play on first load until the user taps somewhere on the page.

#### Root Cause

Apple's WebKit implementation requires a user gesture (tap, click, or keypress) before any `<audio>` element or `AudioContext` can produce sound. This is enforced at the browser level and cannot be bypassed via JavaScript.

#### Affected Environments

- iOS 15.0 – 17.x Safari
- iOS 15.0 – 17.x Chrome (uses WebKit engine)
- iOS 15.0 – 17.x Edge (uses WebKit engine)

#### Symptoms

- Initial greeting audio does not play on first page visit
- Notification sounds silent until user interaction
- "Audio blocked" indicator appears in widget UI
- Works correctly after first tap anywhere on page

#### Workaround

**Primary:** Implement a "tap to enable" overlay on first visit. Show a brief prompt: *"Tap anywhere to enable audio"* — dismiss after first tap and store flag in `sessionStorage`.

```javascript
// Check and request audio context on first user interaction
let audioEnabled = sessionStorage.getItem('sunaiva_audio_enabled');

if (!audioEnabled) {
  document.addEventListener('click', async () => {
    if (!audioEnabled) {
      await widget.enableAudio();
      sessionStorage.setItem('sunaiva_audio_enabled', 'true');
      hideOverlay();
    }
  }, { once: true });
}
```

**Secondary:** Queue all audio events triggered before interaction and replay once the first tap is detected.

#### Verification Steps

1. Clear Safari history and cookies
2. Open widget in private mode
3. Observe initial greeting — should show tap prompt
4. Tap anywhere — audio should play
5. Navigate away and return — audio plays without prompt

#### Related Tickets

- #ENG-452 — Audio queue implementation
- #UI-189 — Tap-to-enable overlay design

---

### Issue #2: Android Chrome Permission Prompts

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-002 |
| **Platform** | Android Chrome 100+ |
| **Component** | Microphone / Media Devices |
| **Severity** | High |
| **First Reported** | v1.1.0 |
| **Status** | Known — Stable Workaround |

#### Description

On Android Chrome, the microphone permission prompt appears as a browser-level modal that can be easily missed or accidentally denied. Re-prompting requires navigating to Chrome settings, creating high drop-off.

#### Root Cause

Android Chrome uses a one-time permission model per origin. If denied, the site must direct users to `chrome://settings` to manually enable — there is no programmatic re-prompt API.

#### Affected Environments

- Android Chrome 100–120
- Android Chrome Beta / Dev
- Some Chromium-based browsers (Opera, Brave) with similar behavior

#### Symptoms

- Permission prompt doesn't appear (ad blockers, OS-level mic disabled)
- User accidentally taps "Deny" with no clear recovery path
- Widget shows "Microphone unavailable" after permission denial
- No in-app path to re-request permission

#### Workaround

**Pre-emptive:** Check `navigator.permissions` before initiating WebRTC to detect existing denial state.

```javascript
async function checkMicPermission() {
  try {
    const result = await navigator.permissions.query({ name: 'microphone' });
    return result.state; // 'granted' | 'denied' | 'prompt'
  } catch (e) {
    return 'unknown';
  }
}
```

**On denial:** Display custom permission-recovery modal with step-by-step instructions:

1. Tap "Open Settings" → launches Chrome settings for the site
2. Show visual guide with screenshots (see #UI-203)
3. Offer fallback: copy phone number for voice callback

**Recovery URL:** Use `android.settings.APPLICATION_DETAILS_SETTINGS` intent for app-level microphone access if the device runs Android 12+ and the widget is wrapped in a WebView.

#### Verification Steps

1. Install widget via Chrome on Android device
2. Tap "Deny" on permission prompt
3. Observe custom recovery modal appears within 2 seconds
4. Follow steps to re-enable — verify microphone works

#### Related Tickets

- #ENG-501 — Permission state detection
- #UI-203 — Recovery modal design assets

---

### Issue #3: Samsung Internet WebRTC Quirks

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-003 |
| **Platform** | Samsung Internet 20+ |
| **Component** | WebRTC / getUserMedia |
| **Severity** | Medium |
| **First Reported** | v1.3.0 |
| **Status** | Known — Stable Workaround |

#### Description

Samsung Internet browser exhibits non-standard WebRTC behavior, particularly around device enumeration and ICE candidate gathering. Some devices fail to expose audio input devices correctly.

#### Root Cause

Samsung Internet uses a forked Chromium engine with modified media device APIs. The `enumerateDevices()` method may return an empty list on first call, and ICE candidate gathering sometimes stalls on Samsung Exynos-based devices.

#### Affected Environments

- Samsung Internet 20.x – 22.x on Galaxy S21/S22/S23 (Exynos models)
- Samsung Internet 20.x – 22.x on Galaxy A series
- Samsung Internet 20.x on Galaxy Tab S series

#### Symptoms

- "No microphone found" error on otherwise functional devices
- Call connects but audio one-way (candidate gathering timeout)
- Device list shows empty or only "default" device
- Works correctly on Snapdragon Samsung devices

#### Workaround

**Device enumeration fix:** Implement retry logic with exponential backoff for `enumerateDevices()`.

```javascript
async function getAudioDevices(retries = 3) {
  for (let i = 0; i < retries; i++) {
    const devices = await navigator.mediaDevices.enumerateDevices();
    const audioInputs = devices.filter(d => d.kind === 'audioinput');
    
    if (audioInputs.length > 0) return audioInputs;
    
    await new Promise(r => setTimeout(r, 500 * (i + 1)));
  }
  return [{ deviceId: 'default', label: 'Default Microphone' }];
}
```

**ICE candidate fix:** Add `iceCandidatePoolSize: 10` to `RTCPeerConnection` config and increase STUN/TURN server timeout on Samsung devices (detected via User-Agent).

```javascript
const config = isSamsungInternet ? {
  iceServers: [{ urls: 'stun:stun.sunaiva.com:3478' }],
  iceCandidatePoolSize: 10
} : defaultConfig;
```

#### Verification Steps

1. Test on Galaxy S22 (Exynos) with Samsung Internet
2. Verify device enumeration returns microphone
3. Place test call — confirm ICE candidates generate within 10 seconds
4. Confirm two-way audio

#### Related Tickets

- #ENG-478 — Samsung device detection utility

---

### Issue #4: Background Audio Session Interruption

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-004 |
| **Platform** | iOS / Android |
| **Component** | Audio Session / Media |
| **Severity** | High |
| **First Reported** | v1.2.0 |
| **Status** | Known — Stable Workaround |

#### Description

Incoming phone calls, Siri activation, alarm clock, or other system audio events interrupt the widget's audio session. On iOS, audio ducks or pauses entirely. On Android, the WebRTC connection may drop.

#### Root Cause

Mobile OS audio session management prioritizes system sounds. Without proper audio focus handling, the widget loses focus and the WebRTC connection becomes unstable.

#### Affected Environments

- iOS 15+ Safari / Chrome (all WebRTC apps)
- Android 10+ Chrome / Samsung Internet
- Any app with in-call navigation or GPS guidance running simultaneously

#### Symptoms

- Audio cuts out mid-conversation during incoming call
- After call ends, audio doesn't resume automatically
- Widget shows "Reconnecting..." after system interruption
- On Android: WebRTC connection drops entirely

#### Workaround

**iOS:** Configure `AVAudioSession` category via the native bridge (requires WebView wrapper) or use Web Audio API with proper interruption handling.

```javascript
// Listen for iOS audio interruption
if (typeof AudioContext !== 'undefined') {
  const audioCtx = new AudioContext();
  
  audioCtx.onstatechange = () => {
    if (audioCtx.state === 'interrupted') {
      // Pause widget, show "Call in progress" UI
      widget.pause();
    } else if (audioCtx.state === 'running') {
      // Resume if appropriate
      widget.resume();
    }
  };
}
```

**Android:** Implement audio focus listener via native bridge.

```javascript
// Pseudo-code for Android native bridge
androidBridge.onAudioFocusChange = (focusChange) => {
  if (focusChange === 'LOSS') {
    widget.pause();
  } else if (focusChange === 'GAIN') {
    widget.resume();
  } else if (focusChange === 'LOSS_TRANSIENT') {
    widget.pause(); // Pause but expect quick return
  }
};
```

**General:** Implement auto-reconnect logic with 5-second grace period after interruption ends.

#### Verification Steps

1. Start active widget session
2. Simulate incoming call (use another phone or call forwarding)
3. Observe audio pauses — widget shows "Paused" state
4. End call — verify auto-reconnect within 10 seconds
5. Confirm audio resumes

#### Related Tickets

- #ENG-389 — iOS audio session bridge
- #ENG-412 — Android audio focus handling

---

### Issue #5: Push Notification Permission Variations

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-005 |
| **Platform** | iOS / Android |
| **Component** | Push Notifications / VAPID |
| **Severity** | Medium |
| **First Reported** | v1.4.0 |
| **Status** | Known — Stable Workaround |

#### Description

Push notification permission UIs and behavior differ significantly between iOS Safari, Android Chrome, and Samsung Internet. Some platforms don't support Web Push API at all, requiring fallback to SMS or in-app alerts.

#### Root Cause

Apple only added Web Push support to iOS 16.4+ Safari. Earlier versions and some Android browsers lack support entirely. Permission request timing and UI also varies.

#### Affected Environments

- iOS < 16.4 Safari — Web Push not supported
- iOS 16.4+ Safari — Supported but requires icon and badge configuration
- Android Chrome — Supported
- Samsung Internet — Partial support (no badge API)
- Firefox Android — Not supported

#### Symptoms

- "Enable notifications" button does nothing on iOS < 16.4
- Permission prompt never appears on unsupported browsers
- Notifications arrive but without app icon on Samsung Internet
- Inconsistent opt-in rates across platforms (12% iOS vs 38% Android)

#### Workaround

**Feature detection:**

```javascript
function supportsWebPush() {
  if (!('serviceWorker' in navigator)) return false;
  if (!('PushManager' in window)) return false;
  
  // iOS Safari 16.4+ specific check
  const isIOSSafari = /iPhone.*Safari/.test(navigator.userAgent);
  const iosVersion = parseInt(/OS (\d+)_/.match(navigator.userAgent)?.[1] || '0');
  
  if (isIOSSafari && iosVersion < 16) return false;
  
  return true;
}
```

**Platform-specific fallbacks:**

- iOS < 16.4: Show SMS opt-in prompt: *"Get job updates via SMS — reply STOP to opt out"*
- Samsung Internet: Use in-app notification center instead of system notifications
- Unsupported browsers: Hide notification prompt entirely

**iOS 16.4+ best practice:** Request permission only after meaningful user engagement (after first completed interaction, not on page load).

```javascript
// Request after user completes first widget interaction
async function requestNotificationPermission() {
  const permission = await Notification.requestPermission();
  // Track opt-in rate by permission state
  analytics.track('notification_permission', { status: permission });
}
```

#### Verification Steps

1. Test on iOS 15.7 Safari — verify no prompt, SMS fallback shown
2. Test on iOS 17.2 Safari — verify prompt appears after interaction
3. Test on Android Chrome — verify system notification appears
4. Verify opt-in rates in analytics

#### Related Tickets

- #ENG-534 — Push permission handling refactor

---

### Issue #6: Hardware Echo Cancellation Variance

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-006 |
| **Platform** | Multiple |
| **Component** | Audio Processing / WebRTC |
| **Severity** | Medium |
| **First Reported** | v1.1.0 |
| **Status** | Known — Stable Workaround |

#### Description

Echo cancellation quality varies dramatically across devices. Some cheap Android devices (particularly older Xiaomi, Oppo, Realme) introduce audible echo. iOS generally performs well but can over-suppress, causing voice to sound robotic.

#### Root Cause

WebRTC's echo cancellation (`AEC`) relies on device-specific audio processing. Low-cost Android devices often lack hardware echo cancellation and software AEC is insufficient. iOS uses its own echo cancellation which can conflict with WebRTC's software AEC.

#### Affected Environments

- Xiaomi Redmi Note 8–11 (all Android versions)
- Oppo A series (A16, A54)
- Realme C series
- Some iOS devices in speakerphone mode (iPhone 12–14 series)

#### Symptoms

- Caller hears their own voice echoed back (0.5–1 second delay)
- Voice sounds muffled or "underwater"
- On iOS: voice artifacts, robotic tone during double-talk
- Reports higher call abandonment on specific device models

#### Workaround

**Device detection:** Use User-Agent and device model detection to identify problematic devices.

```javascript
const problematicDevices = [
  'Redmi Note 8',
  'Redmi Note 9', 
  'Oppo A16',
  'Realme C21'
];

function isProblematicEchoDevice() {
  const ua = navigator.userAgent;
  return problematicDevices.some(d => ua.includes(d));
}
```

**WebRTC audio processing config:**

```javascript
const audioConstraints = {
  echoCancellation: true,
  noiseSuppression: true,
  autoGainControl: true
};

// For problematic devices, try disabling WebRTC AEC 
// (rely on hardware — often better on these devices)
if (isProblematicEchoDevice()) {
  audioConstraints.echoCancellation = false;
  audioConstraints.noiseSuppression = false;
}

// For iOS speakerphone, reduce aggressiveness
if (isIOS && isSpeakerphoneOn) {
  // Use less aggressive AEC via extended filter
  // (requires native bridge for fine control)
}
```

**Fallback:** For severe cases, offer voice-only mode (no speaker) or suggest wired headset.

#### Verification Steps

1. Test on Xiaomi Redmi Note 10 — no audible echo
2. Test on Oppo A54 — minimal echo acceptable
3. Test on iPhone 14 speakerphone — no robotic artifacts
4. Collect user-reported echo incidents — target < 2% of calls

#### Related Tickets

- #ENG-367 — Device echo profile database

---

### Issue #7: Bluetooth Audio Routing Inconsistency

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-007 |
| **Platform** | iOS / Android |
| **Component** | Audio Routing / Bluetooth |
| **Severity** | Medium |
| **First Reported** | v1.3.0 |
| **Status** | Known — In Progress |

#### Description

When users connect or disconnect Bluetooth devices during an active call, audio routing doesn't update correctly. Audio may continue playing through the wrong output, or the call may drop.

#### Root Cause

Web Audio API and WebRTC handle Bluetooth device changes differently across platforms. iOS handles this reasonably well via AVAudioSession, but Android's handling is inconsistent and browser-dependent.

#### Affected Environments

- iOS 16+ with AirPods Pro / Beats
- Android 12+ Chrome with car Bluetooth
- Android 13+ with multiple paired devices

#### Symptoms

- User connects Bluetooth earbuds mid-call — audio continues through speaker
- User disconnects Bluetooth — no audio at all (frozen state)
- On Android car Bluetooth: audio plays through car speakers but microphone stays on phone
- Widget doesn't detect routing change — UI shows "Connected" while audio broken

#### Workaround

**iOS:** Listen for route change events via native bridge.

```javascript
// Via native bridge to AVAudioSession
nativeBridge.onAudioRouteChange = (reason) => {
  if (reason === 'newDeviceAvailable') {
    // Switch to new Bluetooth device
    widget.switchAudioOutput('bluetooth');
  } else if (reason === 'oldDeviceUnavailable') {
    // Fall back to speaker
    widget.switchAudioOutput('speaker');
  }
};
```

**Android:** Use `navigator.mediaDevices.ondevicechange` to detect Bluetooth changes and re-query audio outputs.

```javascript
navigator.mediaDevices.ondevicechange = async () => {
  const devices = await navigator.mediaDevices.enumerateDevices();
  const audioOutputs = devices.filter(d => d.kind === 'audiooutput');
  const currentOutput = audioOutputs.find(d => d.deviceId === currentSinkId);
  
  if (currentOutput && currentOutput.label.includes('Bluetooth')) {
    // Verify audio is actually routing to Bluetooth
    // If not, force re-selection
  }
};
```

**General:** Implement periodic audio path verification (every 5 seconds during active call).

```javascript
setInterval(async () => {
  const currentSink = await widget.getCurrentAudioSink();
  const expectedSink = widget.getPreferredAudioSink();
  
  if (currentSink !== expectedSink) {
    console.warn('Audio routing mismatch, attempting correction');
    await widget.setAudioSink(expectedSink);
  }
}, 5000);
```

#### Status

Workaround implementation in progress. Expected stable by v1.6.0.

#### Verification Steps

1. Start call on iPhone with Bluetooth disconnected
2. Connect AirPods mid-call — verify audio routes to AirPods within 3 seconds
3. Disconnect AirPods — verify audio routes to speaker within 3 seconds
4. Repeat on Android Chrome with car Bluetooth

#### Related Tickets

- #ENG-521 — Audio routing manager (In Progress)
- #UI-234 — Bluetooth status indicator UI

---

### Issue #8: Battery Optimization Killing Connections

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-008 |
| **Platform** | Android |
| **Component** | Network / WebSocket / WebRTC |
| **Severity** | High |
| **First Reported** | v1.2.0 |
| **Status** | Known — Stable Workaround |

#### Description

Android's aggressive battery optimization (particularly on MIUI, ColorOS, and One UI) kills background WebSocket and WebRTC connections after 30–60 seconds, causing the widget to show "Offline" even when the app appears open.

#### Root Cause

Android Doze mode and vendor-specific battery savers (Xiaomi's battery saver, Samsung's app power monitor) restrict background network activity. WebRTC's keepalive messages are often not frequent enough to satisfy these systems.

#### Affected Environments

- Xiaomi / Redmi (MIUI 12–14) — aggressive app killing
- Oppo / Realme (ColorOS 12–13) — similar behavior
- Samsung (One UI 4–5) — moderate, but "Put app to sleep" option
- OnePlus (OxygenOS 13–14) — least aggressive of the above

#### Symptoms

- Widget shows "Reconnecting..." after 30–60 seconds in background
- Push notifications arrive but WebRTC doesn't recover
- User returns to tab after 2 minutes — sees "Connection lost"
- Works fine when app is in foreground

#### Workaround

**Foreground service (if wrapped in WebView):** Request battery optimization exemption.

```javascript
// Via Android native bridge
androidBridge.requestIgnoreBatteryOptimizations().then(granted => {
  if (granted) {
    console.log('Battery optimization disabled for this app');
  }
});
```

**Web-side keepalive:** Increase WebSocket ping frequency and add visual heartbeat.

```javascript
// Send ping every 15 seconds (Android kills after ~30s of inactivity)
const heartbeatInterval = setInterval(() => {
  if (widget.isActive()) {
    websocket.send(JSON.stringify({ type: 'ping' }));
  }
}, 15000);

// Send WebRTC stats to keep connection "active" from OS perspective
setInterval(() => {
  if (widget.hasActiveCall()) {
    getRTCStats(); // Triggers network activity
  }
}, 20000);
```

**User-facing guidance:** For users experiencing this, provide step-by-step instructions to disable battery optimization for the specific browser.

```javascript
function showBatteryOptimizationGuide() {
  const deviceInfo = getDeviceInfo();
  
  if (deviceInfo.os === 'Android' && deviceInfo.manufacturer === 'Xiaomi') {
    showModal('xiaomi-battery-settings');
  } else if (deviceInfo.manufacturer === 'Samsung') {
    showModal('samsung-battery-settings');
  }
  // ... other manufacturers
}
```

#### Verification Steps

1. Open widget on Xiaomi Redmi Note 11
2. Switch to another app (widget in background)
3. Wait 60 seconds — return to widget
4. Verify connection maintained OR graceful reconnect within 5 seconds
5. Check battery optimization disabled in system settings

#### Related Tickets

- #UI-215 — Battery optimization guide modal

---

### Issue #9: Network Transition (WiFi ↔ Cellular)

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-009 |
| **Platform** | iOS / Android |
| **Component** | Network / WebRTC / ICE |
| **Severity** | High |
| **First Reported** | v1.0.0 |
| **Status** | Known — Stable Workaround |

#### Description

When a user moves between WiFi networks or switches from WiFi to cellular (or vice versa), the active WebRTC call drops. The connection doesn't gracefully re-establish on the new network.

#### Root Cause

WebRTC ICE handling doesn't automatically switch to a new network interface. When the local IP changes, existing ICE candidates become invalid, and the connection enters a failed state.

#### Affected Environments

- iOS Safari / Chrome when switching networks
- Android Chrome when toggling WiFi/cellular
- Any device on unstable networks (tradie sites with spotty WiFi)

#### Symptoms

- Call drops completely when user walks from office to job site
- Widget shows "Connection lost" — requires manual re-dial
- Works fine on stable single-network connections
- High user frustration in mobile use cases

#### Workaround

**Network change detection:** Listen for `online`/`offline` events and network type changes.

```javascript
window.addEventListener('online', handleNetworkChange);
window.addEventListener('offline', handleNetworkChange);

// For more granular network info
if ('connection' in navigator) {
  const connection = navigator.connection;
  connection.addEventListener('change', handleNetworkChange);
}
```

**ICE restart on network change:**

```javascript
async function handleNetworkChange() {
  if (!widget.hasActiveCall()) return;
  
  const networkType = navigator.connection?.type;
  console.log('Network changed to:', networkType);
  
  // Trigger ICE restart
  await widget.peerConnection.restartIce();
  
  // Re-gather candidates on new network
  widget.peerConnection.createOffer({ iceRestart: true })
    .then(offer => widget.peerConnection.setLocalDescription(offer));
}
```

**TURN fallback:** Ensure TURN server is always configured so traffic can route through TURN when direct peer connection fails on new network.

```javascript
const iceServers = [
  { urls: 'stun:stun.sunaiva.com:3478' },
  { 
    urls: 'turn:turn.sunaiva.com:3478', 
    username: 'user', 
    credential: 'pass' 
  }
];
```

**User feedback:** Show "Reconnecting..." with progress indicator during network transition.

```javascript
// Don't show "Connection lost" immediately
// Wait 10 seconds before declaring failure
setTimeout(() => {
  if (!widget.isReconnected()) {
    showReconnectionFailedUI();
  }
}, 10000);
```

#### Verification Steps

1. Start call on WiFi
2. Disable WiFi (force cellular) — observe auto-reconnect within 10 seconds
3. Re-enable WiFi — observe graceful switch back
4. Test on spotty network — confirm ICE restart works

#### Related Tickets

- #ENG-298 — ICE restart implementation

---

### Issue #10: Progressive Web App Installation Barriers

| Field | Value |
|-------|-------|
| **Issue ID** | MOB-010 |
| **Platform** | iOS / Android |
| **Component** | PWA / Install Prompt |
| **Severity** | Low |
| **First Reported** | v1.4.0 |
| **Status** | Known — Stable Workaround |

#### Description

PWA installation prompts are inconsistent or hidden across browsers. iOS Safari requires users to manually add to home screen via the share menu — no in-app prompt. Android Chrome's install prompt competes with other UI priorities.

#### Root Cause

Apple deliberately limits PWA installation UX on iOS to promote App Store distribution. Android varies by browser manufacturer. Both platforms have low install rates compared to native apps.

#### Affected Environments

- iOS Safari (all versions) — no install prompt API
- Android Chrome — prompt available but often ignored
- Samsung Internet — no install prompt
- Desktop browsers — low priority for widget use case

#### Symptoms

- No install prompt appears on iOS
- On Android: prompt appears but is easily dismissed
- User doesn't realize they can "install" for better experience
- Lower engagement on repeat visits (no home screen icon)

#### Workaround

**Custom install prompt:** Create in-app persistent banner that doesn't rely on browser prompt.

```javascript
// Check if already installed (standalone mode)
const isStandalone = window.matchMedia('(display-mode: standalone)').matches;

if (!isStandalone && !isIOS) {
  // Show custom "Add to Home Screen" banner
  showInstallBanner();
}
```

**iOS-specific guidance:** Detect iOS and show instruction modal on first visit.

```javascript
function isIOS() {
  return /iPhone|iPad|iPod/.test(navigator.userAgent);
}

if (isIOS() && !isStandalone) {
  showModal('ios-install-instructions', {
    steps: [
      'Tap the Share button in Safari',
      'Scroll down and tap "Add to Home Screen"',
      'Tap "Add" to confirm'
    ]
  });
}
```

**Value reinforcement:** Show install prompt only after user has completed a meaningful action (first call completed, form submitted).

```javascript
widget.on('firstCallCompleted', () => {
  if (!isStandalone) {
    showInstallPrompt();
  }
});
```

#### Verification Steps

1. Visit on iOS Safari — verify instruction modal appears
2. Follow steps to add to home screen — verify icon appears
3. Launch from home screen — verify standalone mode (no browser chrome)
4. Visit on Android Chrome — verify custom banner appears after first interaction

#### Related Tickets

- #UI-198 — Install prompt designs (iOS + Android)

---

## Reporting New Issues

When you encounter a new mobile-specific issue, create an issue in the tracker with:

1. **Title:** Clear description (e.g., "Audio drops on Sony Xperia")
2. **Tag:** `mobile-known-issues`
3. **Fields:**
   - Device model and OS version
   - Browser and version
   - Steps to reproduce
   - Expected vs actual behavior
   - Severity (Critical / High / Medium / Low)
4. **Attachment:** Screenshot or screen recording if UI-related

---

## Document Version History

| Version | Date | Author | Changes |
|---------|------|--------|---------|
| 1.0 | Jan 2025 | Technical Writing | Initial release — 10 pre-populated issues |

---

## Appendix: Quick Test Device Matrix

Use this matrix to verify workarounds across representative devices.

| Manufacturer | Model | OS Version | Browser | Test Priority |
|--------------|-------|------------|---------|---------------|
| Apple | iPhone 14 | iOS 17.2 | Safari | P1 |
| Apple | iPhone 12 | iOS 16.5 | Safari | P1 |
| Samsung | Galaxy S23 | Android 14 | Chrome | P1 |
| Samsung | Galaxy S22 | Android 13 | Samsung Internet | P2 |
| Xiaomi | Redmi Note 12 | Android 13 | Chrome | P2 |
| Oppo | Reno 8 | Android 13 | Chrome | P2 |
| Google | Pixel 7 | Android 14 | Chrome | P1 |
| OnePlus | 11 | Android 13 | Chrome | P2 |

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*Last reviewed: January 2025*  
*Next review: April 2025*