Samsung Galaxy S9+
Android 8.0
My phone doesn't respond
Turn screen lock on or off
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1Turn on the screen lock
- Briefly press On/Off.
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2Turn off the screen lock
- Briefly press On/Off and slide you finger across the screen.
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3Set automatic screen lock
- Slide your finger downwards starting from the top of the screen.
- Press the settings icon.
- Press Display.
- Press Screen timeout.
- Press the required setting.
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4Return to the home screen
- Press the Home key to return to the home screen.