Samsung Galaxy S9
Android 8.0
Select help topic
1. Find "Battery"
Slide your finger downwards starting from the top of the screen.
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Press the settings icon.
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Press Device maintenance.
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Press Battery.
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2. Extend the battery life
Press the required setting.
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Press APPLY to turn on the function.
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3. Return to the home screen
Press the Home key to return to the home screen.
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