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You can adjust the screen brightness to your surroundings.
1. Find "Display & Brightness"
Press Display & Brightness.
2. Adjust screen brightness
Press the indicator next to "Auto-Brightness" to turn automatic brightness on or off.
If you turn off the function, slide the indicator above "Auto-Brightness" right or left to select the required brightness.
3. Return to the home screen
Press the Home key to return to the home screen.