Why doesn't the display stay on when making a phone call?

[AC Question]

why doen't display stay on when making a phone call

after starting the call, the screen display turns off when trying to turn on the speaker or any other option

 

[Naxow]

Re: why doen't display stay on when making a phone call

the display turn off is triggered by a proximity sensor, usually near the upper right corner (front view) of phones, this is done to avoid pressing buttons while the phone is near your face. If you are keeping a distance with your phone and it activates, it may seem due to a sensor malfunction.

Has your phone recently suffered any damage or have you downloaded any unusual app?