My headset speaker (non-speaker phone) has a buzz to it when the in-call volume is all the way up, or one notch away from full. If I call voice mail, any automated line, or anybody speaks loudly the words are distorted by the speaker buzz. I'm not sure how else to describe it other than distortion/speaker issue. Does anybody else have their in-call volume all the way up that could confirm whether this is happening on theirs? My wife has the incredible and when I compare on her voicemail full in-call volume, it is perfect. I'm thinking about exchanging at Best Buy, but wan't to make sure its not common before I do. Would hate to go through the trouble if they all make this buzz/distortion. Thanks everyone.