---
name: mobile-app-debugging-4069d1431b6e
description: Mobile app debugging for iOS, Android, cross-platform frameworks. Use for crashes, memory leaks, performance issues, network problems, or encountering Xcode instruments, Android Profiler, React Native debugger, native bridge errors.
license: MIT
---

# Mobile App Debugging

Debug mobile applications across iOS, Android, and cross-platform frameworks.

## iOS Debugging (Xcode)

```swift
// Breakpoint with condition
// Right-click breakpoint > Edit > Condition: userId == "123"

// LLDB commands
po variable          // Print object
p expression         // Evaluate expression
bt                   // Backtrace
```

### Memory Debugging
- Use Memory Graph Debugger to find retain cycles
- Enable Zombie Objects for use-after-free bugs
- Profile with Instruments > Leaks

## Android Debugging (Android Studio)

```kotlin
// Logcat filtering
Log.d("TAG", "Debug message")
Log.e("TAG", "Error", exception)

// Filter: tag:MyApp level:error
```

### Common Issues
- ANR: Check main thread blocking
- OOM: Profile with Memory Profiler
- Layout issues: Use Layout Inspector

## React Native

```javascript
// Remote debugging
// Shake device > Debug JS Remotely

// Console logging
console.log('Debug:', variable);
console.warn('Warning');
console.error('Error');

// Performance Monitor
// Shake > Show Perf Monitor
// Target: 60 FPS, <16ms per frame
```

## Network Debugging

```javascript
// Intercept requests
XMLHttpRequest.prototype._send = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function() {
  console.log('Request:', this._url);
  this._send.apply(this, arguments);
};
```

## Debug Checklist

- [ ] Test on physical devices (not just simulators)
- [ ] Test on older device models
- [ ] Simulate slow 3G network
- [ ] Test offline mode
- [ ] Check memory under load
- [ ] Test rotation and safe areas
- [ ] Verify 60 FPS target

## Performance Targets

| Metric | Target |
|--------|--------|
| Frame rate | 60 FPS (16ms/frame) |
| Memory | <100MB |
| App launch | <2 seconds |


---
Source attribution: secondsky
Original project: https://github.com/secondsky/claude-skills/blob/88378361314f558fb719aec0af9fd898ab36f0b2/plugins/mobile-app-debugging/skills/mobile-app-debugging/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2025 Claude Skills Maintainers

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: secondsky
Original project: https://github.com/secondsky/claude-skills/blob/88378361314f558fb719aec0af9fd898ab36f0b2/plugins/mobile-app-debugging/skills/mobile-app-debugging/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering
Roles: Frontend Developer, Mobile Developer, QA / Test Engineer
Specialties: Mobile, React, Testing
Tools: Xcode, Android Studio, React Native
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 2330bf20c9e400ebdb7bf2bd9a077a98c58fe3e788943229af5a50b11224627e