Back story: Have an HTC Inspire. Purchased a Plantronics Voyager Pro+ bluetooth headset. They paired/connected with no problem. HOWEVER, I cannot hear or be heard on phone calls. The call is going through, the phone indicates bluetooth headset is on. All volumes are on and set to high. All other sounds work on the headset, including playing music on the phone. It is only phone calls that do not work, which is very frustrating since that is the reason I wanted a headset. Couple other things to note. I purchased two headsets, one for myself, and one for husband who also has an HTC Inspire. Neither headset will work on my phone, and both work on his, so clearly the issue is with the phone itself. I have unpaired and disconnected the headset from the phone and rebooted the phone and taken the battery out numerous times with no success. Went into the AT&T store and none of the three techs there could figure it out and suggested a factory reset, which I also did...no success. Any and all suggestions would be welcome.