Device Guides

Samsung Galaxy S21 Ultra 5G

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My mobile phone's battery life is short

This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.

Possible cause 2:

Automatic screen lock is turned off: Turn on automatic screen lock.

List view

1. Turn on screen lock

Tap the Side key.

2. Turn off screen lock

Tap the Side key and slide you finger across the screen.

3. Set automatic screen lock

Slide two fingers downwards starting from the top the screen.
Tap the settings icon.
Tap Display.
Tap Screen timeout.
Tap the required setting.

4. Return to the home screen

Tap the Home key to return to the home screen.
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