My son has an LG G4 on AT&T just like mine. Since the marshmallow update earlier this month, he noticed his phone doesn't work properly. What happens is that if he makes a call or if he receives a call, he can't hear the other person and the other person can't hear him. After exactly 20 seconds, the phone hangs up. All other sound and voice functions seem to be working.
Any ideas how to fix this?
Any ideas how to fix this?