I had headset for my htc , they worked fine , then suddenyl , the mic or the buttons didnt want to work , I said it would be the age of the mics (1 year). I went and bought another ones , they worked fine , the button do work (open/end calls) and I can speak and listen at the same time to my calls. then I installed Microsoft Voice Command , Noticed that the mic and button stopped working , I uninstalled it , and it is still not working! whats the problem? Please help me! thanks!