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You can adjust the screen brightness to your surroundings.
1. Find "Brightness level"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Brightness level.
2. Adjust screen brightness
Drag the brightness indicator right or left to select the required brightness level.
Press the Return key.
3. Turn automatic brightness on or off
Press Adaptive brightness.
Press the indicator next to "Adaptive brightness" to turn automatic brightness on or off.
4. Return to the home screen
Press the Home key to return to the home screen.