Screen brightness

1. From the Home screen, tap > Settings > Display.
2. Tap Brightness level.
3. With the Adaptive brightness turned on, drag the slider to set the maximum brightness level. This sets a limit on how bright the screen will be when Adaptive brightness is enabled.
4. To set the brightness manually, clear the Adaptive brightness option, and then drag the brightness slider to the left to decrease or to the right to increase the screen brightness.