Hello all! I am on my second iPhone 5 with AT&T right now. My first one, When I was talking to someone on the phone, they said it sounded like I was in a tin can and they sounded very muffled to me 70% of the time. Now, My second one acts the same way if I put it on my right shoulder and hold it with my head, like when you are multitasking and need both hands. I am also having a problem when I am talking to someone, I can randomly hear a vibrating noise for just a second, but its loud and comes straight from the the earpiece when my ear is. My first one did the same thing, the random half a second long vibrate noise, but the sound was already so distorted, I didn't bother me too much. It's not strong, like when the phone rings and vibrates and the phone doesn't move, but you can clearly hear a VERY annoying vibrating noise through the ear piece. It is driving me INSANE. Is anyone else having these same issues?