Issue Description:
The screen does not respond when touched.
Possible Causes:
- Moisture or condensation on the screen；
- Loose, disconnected, or damaged screen cable；
- Faulty screen；
Solutions:
- For Cause 1, wipe the screen with a dry paper towel to ensure it is completely dry, then try again. If the issue persists, restart the device and test the screen again.
- For Cause 2, check whether the screen cable is loose, partially disconnected, or damaged. Disconnect and reconnect the cable securely. If the issue persists, replace the screen cable.
- For Cause 3, replace the screen.