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You can adjust the screen brightness to your surroundings.
1. Find "Brightness"
Slide your finger downwards starting from the top of the screen.
2. Adjust screen brightness
Press the field next to "Adapt to lighting conditions" to turn automatic brightness on or off.
Drag the brightness indicator right or left to select the required brightness level.
3. Return to the home screen
Press the Home key to return to the home screen.