We just picked up a brand new iPhone 12 Pro Max, and discovered the microphone is not working. When receiving a call from the new phone, the listener just hears a rush of static and noise. FaceTime video calls and Audio Memos get the same thing. Basically any attempt to use the phone's microphone just results in noise. You can't even hear the person trying to talk. I've tried hard resets and a fresh install of IOS 14.2 but nothing helps. Very frustrating for a $1,300 devices to be failing right out of the box.