Proximity Sensor problem when talking
My brand new XS Max has a really major problem that happens on just about every phone call - basically mid conversation, I'll either go on mute, put the call on hold or I'll hear the tone of keypad numbers being pressed (and when I take my face off the phone, it has indeed pressed several).
I started with a factory reset on my phone. Then I took my phone into the apple store and they completely replaced the screen on my phone. Nothing has worked.
Any ideas???
iPhone XS Max, iOS 12