Reference
The screen is dark.
- Make sure the screen brightness of your tablet device is not set at the lowest level.
- Make sure the remaining battery level is sufficient.
- Be careful not to cover the ambient light sensor.
- The screen may seem dark if used outdoors on a clear day.
- If you have the automatic brightness setting enabled, the brightness of the screen is adjusted automatically according to the surrounding brightness.
-
Tap [
Apps & Widgets] - [
Settings] - [Display] - [Brightness] - [Automatic brightness] to remove the check mark and disable the automatic brightness setting.