Learn how to turn off developer options on the LG Optimus L9.
Turn off develop options
If developer options are turned on, it can cause red border on the screen, errors when connecting to computers, or other problems. To turn off all developer options, follow these steps:
- From any Home screen, tap the Menu key.
- Tap System settings.
- Tap Developer options.
- Tap the Menu key
- Tap Reset to default.