I got my pair with UE9000 yesterday, but sometimes there is a harsh/grasping noise in the left can. The sound can appear before I connect them to a device, and sometimes after 30 min. It is really annoying, and it can get louder and louder until I cant hear the music from the left can. Have...

How is the wireless compability with an android phone and a win7 computer with apt-x dongle? Does the microphone(s) work while connected to an android phone wire/bluetooth and does the microphone work while connected to a computer with an apt-x dongle?