Calls drop
When I am on a call (phone to ear), after about 3 minutes the speaker button lights up, I can't hear the person on the other end, and then the call drops. Support ran diagnostics and said nothing was wrong with my phone (SE). I am not in a tunnel, on a mountain, or at a concert when this happens. I've tried the airplane mode trick and a hard reset to no avail. Any suggestions?
iPhone SE (3rd generation)