Why are random characters and lines are appearing on my display?
If you are noticing random characters and lines appearing on your display, you may have accidently enabled a User Interface option under the Developer Options. Your device has several developer options that can be used by application developers when testing applications.
Please follow the instructions below to check the developer options that may have been enabled on your device:
2. Touch Settings
3. Touch Developer options
4. Uncheck any options selected under Input and Monitoring
Options under Input
Options under Monitoring
Strict mode enabled
Show CPU usage
Profile GPU rendering
Enable traces - Ensure that no traces are currently enabled
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