Why doesn't my proximity sensor work?

[Hasibuzzaman Tonmoy]

I just bought a LG G4(Marshmallow installed) today and I noticed a problem.

When I receive a call or dial one, my screen automatically turns off and pressing power button/double tapping the screen don't turn it on. It only turns itself on after the other person disconnects the call. As far as I know, the screen is supposed to turn off after I hold the phone on my ear and turn on after I take it away from my ear.

 

[belodion]

Yes. Make sure that nothing is obstructing it. Otherwise, the sensor may be faulty.