dino_landing_page/MOBILE_WALLET_FIXES.md
2025-08-17 22:46:33 +05:30

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# Mobile Wallet Signature Verification Fixes
## Issue Description
The mobile wallet adapter was experiencing "signature verification failed, missing signature for public key" errors when trying to pay DINO coins. This is a common issue with mobile Solana wallets due to differences in how they handle transaction signing and verification.
## Root Causes Identified
1. **Missing Transaction Fields**: Mobile wallets require specific transaction fields like `lastValidBlockHeight`
2. **Incorrect Commitment Levels**: Mobile wallets work better with 'confirmed' commitment vs 'finalized'
3. **Missing Preflight Checks**: Mobile wallets benefit from transaction simulation before sending
4. **Insufficient Error Handling**: Generic error messages didn't help debug mobile-specific issues
5. **Transaction Validation**: Missing validation for required transaction properties
## Solutions Implemented
### 1. Enhanced Transaction Construction
- Added `lastValidBlockHeight` to transactions
- Set proper commitment levels for mobile devices
- Added transaction validation before sending
### 2. Mobile-Optimized Transaction Sending
- Created `sendTransactionWithMobileOptimization` utility function
- Added retry logic with exponential backoff
- Implemented proper error handling for mobile wallets
### 3. Enhanced Error Handling
- Mobile-specific error messages
- Better debugging information for mobile devices
- Specific handling for signature verification failures
### 4. Preflight Transaction Checks
- Added transaction simulation before sending
- Mobile-specific validation rules
- Graceful fallback for preflight failures
### 5. Additional Wallet Adapters
- Added support for more mobile-friendly wallets
- Better mobile wallet detection
- Improved wallet connection handling
## Code Changes Made
### `app/page.tsx`
- Updated transaction construction with mobile-optimized parameters
- Added mobile-specific validation and error handling
- Integrated mobile wallet utility functions
### `app/components/WalletProvider.tsx`
- Added more wallet adapters for better mobile support
- Enhanced error handling for mobile wallets
- Added mobile-specific wallet configuration
### `app/utils/mobileWalletUtils.ts` (New File)
- Mobile-optimized transaction sending function
- Mobile device detection utilities
- Transaction validation for mobile wallets
## Testing Recommendations
1. **Test on Multiple Mobile Devices**
- iOS Safari with Phantom wallet
- Android Chrome with Solflare wallet
- Different screen sizes and orientations
2. **Test Different Network Conditions**
- Slow network connections
- Intermittent connectivity
- High latency scenarios
3. **Test Wallet States**
- Fresh wallet connections
- Reconnected wallets
- Wallets with different token balances
## Common Mobile Wallet Issues and Solutions
### Issue: "Signature verification failed"
**Solution**: Ensure transaction has all required fields and proper commitment levels
### Issue: "Missing signature for public key"
**Solution**: Validate transaction before sending and use mobile-optimized sending
### Issue: "Transaction simulation failed"
**Solution**: Check wallet connection and ensure proper transaction construction
### Issue: "User rejected transaction"
**Solution**: Provide clear error messages and retry options
## Future Improvements
1. **Wallet-Specific Optimizations**
- Phantom-specific transaction handling
- Solflare-specific optimizations
- Hardware wallet support
2. **Better Mobile UX**
- Mobile-specific UI components
- Touch-friendly interactions
- Better mobile error display
3. **Advanced Error Recovery**
- Automatic retry mechanisms
- Transaction recovery options
- Better user guidance
## Monitoring and Debugging
The implementation includes enhanced logging for mobile devices:
- Device detection information
- Wallet connection status
- Transaction validation details
- Error context for debugging
Check browser console for detailed mobile wallet debugging information when issues occur.