how to activate proximity sensor
Hi
I want to know how to activate the Proximity sensor on iPhone 4 as I keep ending the call with my cheek!
Help would be appreciated thank you
iPhone 4, iOS 7.1.2
First, reset the phone by holding the sleep and home button for about 10sec, until the Apple logo comes back again. You will not lose any data by resetting, but it can cure some glitches.
Also make sure that, if there is a protective film attached to the screen, the sensor on top of the screen is not covered. Same if you have a case around your phone.
If this does not work, and to make sure that this is not software related, set it back to factory settings, without using any backup data afterwards. Set up the rest of the personal settings manually and test the proximity sensor.
If the function is back again, restore from the latest backup. If the problem comes back, the backup data contained corrupt data, causing your issues.
If it still does not work, this is a hardware issue and the phone has to be serviced by Apple or an Authorized Apple Service Provider:
Use iTunes to restore your iOS device to factory settings - Apple Support