0712_0712 Said:
"My iphone 16 screen won't turn off when locked: It's not the always-on. That is turned off. The auto lock is set for 30 seconds and works fine when I set down my phone. But then if I tap the screen to check the time, it lights up and does not turn back off. Ever."
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Troubleshooting iPhone Not Turning Off:
A. Update the iPhone:
What's your iOS? If you cannot do so directly on the iPhone, then try updating your iPhone using a computer. Use my User Tip: Update your iPhone Using a Computer - User Tip
B. Go here: If your Screen isn't Working - Apple Support
C. Force Restart the iPhone:
If it will not turn off, then Force Restart your iPhone, seeing if this goes away: Force Restart iPhone - Apple Support