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iPhone 8 screen will not turn off automatically when not being used

iPhone 8 screen will not turn off automatically when not being used unless right hand button is pressed.

iPhone 8, iOS 11.0.3

Posted on Oct 21, 2017 11:27 AM

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Question marked as Top-ranking reply

Posted on Oct 23, 2017 2:29 AM

Hello and welcome to Apple Support Communities, derekfromcoleraine.
If I understand your post correctly, you have to manually press the Sleep/Wake button to lock your iPhone as it is not automatically locking. I'd like to help.
Let's take a look at the setting that can affect this feature. Tap Settings > Display & Brightness > Auto-Lock and see which amount of time it is currently set to Auto-Lock after. If you have Low Power Mode enabled, Auto-Lock will be automatically set for 30 seconds. For more information about Low Power Mode, see this article:
Use Low Power Mode to extend battery life on your iPhone
Let us know if that resolves this issue for you.
Thanks for using the Apple Support Communities. Take care.

125 replies

iPhone 8 screen will not turn off automatically when not being used

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