## Device Issues

### Device Not Responding

| Symptom | Likely Cause | Solution |
| ------- | ------------ | -------- |
| No haptic on power button | Dead battery | Charge for 30 minutes |
| No haptic after charging | Device fault | Contact support |

### GPS Not Fixing

| Symptom | Likely Cause | Solution |
| ------- | ------------ | -------- |
| Orange LED blinking > 5 min | Poor sky view | Move to open area |
| Never gets GPS lock | Hardware issue | Swap device |

### Battery Issues

| Symptom | Likely Cause | Solution |
| ------- | ------------ | -------- |
| Fast battery drain | Cold temperature | Expect reduced capacity |
| Won't charge | USB cable issue | Try different cable |

## App Issues

### NFC Not Working

1. Ensure NFC is enabled in phone settings
2. Hold phone flat against device
3. If repeated failures, enter device ID manually

### Assignment Errors

- "Device already assigned" → Use admin override
- "Runner not found" → Verify bib number

## Dashboard Issues

### Map Not Loading

1. Clear browser cache
2. Check internet connection
3. Try a different browser

### Data Delays

Real-time data may be delayed by:
- Poor cellular coverage at event
- High mesh network load
- Gateway connectivity issues