I recently purchased a verizon droid razr maxx HD. - I have noticed that if I call someone with an iphone, they complain that I sound muffled and robotic. This occurs with a full signal. - If I call people on a landline or other droid phones, they can hear me very clearly without any issues - The problem with calling iphones occurs whether they are on verizon, at&t or t-mobile networks. I can hear people perfectly clearly but they have issues hearing what I am saying on the call. I am curious if anyone else has noticed this as well.