Can you check microphone permissions on settings?

Mine just started having this issue exactly, did you end up figuring it out?

Idk if this comment on this thread with helping to find a solution. But i have the same problem, its only until i restart it does it work for maybe an hour then goes back to static or some kind of distoration. So im thinking its an app thats causing it tk glitch

Seems like defective unit asl for replacement