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You can adjust the screen brightness to your surroundings.
1. Find "Display"
Slide your finger downwards starting from the top of the screen.
Press All settings.
2. Adjust screen brightness
Press the indicator below "Automatically adjust display brightness" to turn automatic brightness on or off.
Drag the indicator below "Brightness level" 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.