iPhone proximity sensor problems

Try a forced restart of your device (depending on your iPhone's model):

• On an iPhone X, iPhone 8, or iPhone 8 Plus: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then, press and hold the Side button until you see the Apple logo.
• On an iPhone 7 or iPhone 7 Plus: Press and hold both the Side and Volume Down buttons for at least 10 seconds, until you see the Apple logo.
• On an iPhone 6s and earlier, iPad, or iPod touch: Press and hold both the Home and the Top (or Side) buttons for at least 10 seconds, until you see the Apple logo.

If the issue still persists, AND if you have nothing (case, screen protector, etc.) that can obstruct your proximity sensor, have your device checked at your most convenient Apple Store or Authorized Service Provider:

Apple - Find Locations - Location Selector

Regards

Giulio

Mine started after upgrading to 11.3.1. Just a finger hovering over the proximity sensor (even a half inch off the surface) turned the screen off. It was super frustrating. It took a little while to realize it was the proximity sensor.

The restart worked! Thanks.

This fixed the issue for me:

Go to: Settings/Display and Brightness/View and change your view from zoomed to standard. This will also allow your home screen icons to change to landscape view which is pretty cool.

I had this same problem after a iOS 11.3 update on My iPhone X. A force or soft reset seemed to fix it.

iOS 11.4 fixes this.

Had exactly the same issue on my X after updating to iOS 11.4. Restating the phone seems to have fixed the issue.

Before you go to the store, have you checked that nothing (case and/or screen protector) can obstruct the proximity sensor's activity?

Shouldn't be this case, then yes, have your device inspected.

Regards

Giulio

I have been annoyed by this exact issue for nearly two months. A forced restart of my iPhone 7+ fixed this problem. Just curious, how did you discover this fix? Thanks for the solution, and it is very much appreciated!

Either restart your iPhone or go to Settings -> Messages and turn off Raise to Listen. Problem solved. You can turn

it back on if you want.

I tried to link to the original post but this is from someone else and it worked for me.

This solution seemed to work for me. I restarted my iPhone 6 and it resolved the proximity sensor issue.

Hard reset your device , it worked for me on iPhone 6s plus

Same problem here (iOS 11.4). Hard restart worked like a charm.

Hard reset (home button + power button + aproximate10 seconds) worked for me. Thanks

Force restart / Reboot fixed my issue with it. iphone X

For me it was as simple as a phone restart. No hard reset required. Try that first and then take it up a level if necessary