I bought this item after seeing so many positive reviews primarily for using it while driving. Even though I myself do not "hear" any problems at my end, numerous times I have heard from the person at the other end that they could not hear me properly.I had been using a wired headset for so many years, and maybe my expectation was higher because of that.I also used the headset at home and at other times when just walking, and it has worked. Therefore, the headset did not serve the intended purpose of use while driving, although i still use it off and on.I have a Sprint Mogul phone. Maybe the bluetooth driver on that phone is not good - which could be part of the problem.