How to adjust StandBy screen timeout and enable StandBy in portrait mode on iPhone 15 Plus?

How can I change the time it takes for my iPhone’s screen to turn black when it's on StandBy? Also, is there a way to have the StandBy option available even when the iPhone isn't positioned horizontally? I have an iPhone 15 Plus, software is IOS 26.6.



[Re-Titled by Moderator]

Original Title: StandBy

Posted on Aug 22, 2026 3:37 PM

Reply
Question marked as Top-ranking reply
3 replies

Aug 23, 2026 9:23 AM in response to ReefBubbles

Welcome!


...How can I change the time it takes for my iPhone’s screen to turn black when it's on StandBy?


How long does it currently take?


I know of no setting that will affect the startup time. However, I've noticed the startup time may vary depending on any apps I left open. I close everything before setting the phone in its Standby position at night.


AJ

How to adjust StandBy screen timeout and enable StandBy in portrait mode on iPhone 15 Plus?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.