iPhone 15 will not turn off
The screen content is too large and buttons don't work to turn off the phone
iPhone 15 Pro Max, iOS 18
Question marked as
Try this first: double-tap on the screen with three fingers (don't have the fingers too close together). If you've accidentally zoomed the screen, that should reverse it. If not, try force-restarting the phone:
Force restart iPhone - Apple Support
Regards.