87 lines
1.9 KiB
Markdown
87 lines
1.9 KiB
Markdown
# TRB-2: Mobile OS and App Issues
|
|
|
|
Status: not started
|
|
|
|
Domain:
|
|
- 3.0 Software Troubleshooting
|
|
|
|
Objective alignment:
|
|
- 3.2 Troubleshoot common mobile OS and application problems
|
|
|
|
## What You Need To Know
|
|
|
|
Mobile troubleshooting often starts with simple checks:
|
|
- Updates
|
|
- Storage
|
|
- Permissions
|
|
- Connectivity
|
|
- App cache/data
|
|
- Battery health
|
|
- Compatibility
|
|
|
|
Common symptoms:
|
|
- App fails to launch
|
|
- App fails to close
|
|
- App fails to update
|
|
- App fails to install
|
|
- App crashes
|
|
- Slow response
|
|
- OS update failure
|
|
- Battery drain
|
|
- Random reboots
|
|
- Bluetooth, Wi-Fi, or NFC problems
|
|
- Screen autorotation failure
|
|
|
|
## Memory Trick
|
|
|
|
Use **U-S-P-C-R**:
|
|
|
|
- **U**pdate
|
|
- **S**torage
|
|
- **P**ermissions
|
|
- **C**onnectivity
|
|
- **R**estart/reinstall
|
|
|
|
Shortcut:
|
|
- **Most mobile app problems start with update, storage, permission, or connectivity checks.**
|
|
|
|
## Troubleshooting Flow
|
|
|
|
App will not launch or crashes:
|
|
- Restart the app.
|
|
- Restart the device.
|
|
- Update the app.
|
|
- Update the OS.
|
|
- Clear app cache where supported.
|
|
- Reinstall the app if needed.
|
|
|
|
App will not install or update:
|
|
- Check storage.
|
|
- Check network connectivity.
|
|
- Check app store account status.
|
|
- Check OS compatibility.
|
|
|
|
Battery drains quickly:
|
|
- Review battery usage by app.
|
|
- Check screen brightness.
|
|
- Disable unnecessary radios.
|
|
- Check for runaway apps.
|
|
|
|
Connectivity problems:
|
|
- Toggle the affected radio.
|
|
- Forget and reconnect to the network or device.
|
|
- Check range and pairing mode.
|
|
- Restart device if needed.
|
|
|
|
Autorotation fails:
|
|
- Check rotation lock.
|
|
- Restart the app.
|
|
- Test sensors if available.
|
|
|
|
## Exam Clues
|
|
|
|
- If an app cannot install, storage and compatibility are high-probability answers.
|
|
- If Bluetooth pairing fails, check pairing mode and forget/re-pair.
|
|
- If the issue started after an update, check known issues and compatibility.
|
|
- If one app is the only problem, focus on that app before resetting the whole phone.
|
|
|