I have an HTC One Developer's Edition phone that I'm using on T-Mobile. I also have the Pioneer AVH-X5500BHS car stereo installed in my truck. I was able to pair the phone with my stereo, but when I make a call, I can't hear it dialing nor hear the person or message on the other side. They can hear me just fine. All other audio (i.e. radio, CDs, etc.) play just fine, but I can't seem to get the audio to come out through the speakers or hear anything when making a call. Has anybody had this issue? If so, have you been able to resolve it? Thanks in advance!