Hey everyone, I just picked up my iPhone 4S yesterday morning from an AT&T store near me. I love the phone so much, and I'm especially excited because it's my first iPhone, but I am having one let down. I am getting this really annoying buzzing noise in the earpiece. It's just loud enough to be noticeable, and I can only hear it when the phone is up to my ear. I notice it both when I'm talking on the phone and when I'm not. For clarification, it's not that noise you sometimes hear in speakers when something is picking up a wireless signal. It literally sounds like it's buzzing. Anyone have any idea what's going on? Should I go ahead and just exchange my phone? Thanks.