This works fine for me using hte standard HTC music player, Do you pair the device to your phone as does it display as being paired on phone and device?
you should here the beeps in your headphones when someone is trying to call.
When they do call it sounds as if htey can hear you but you cannnot hear them, are you sure your using the device mic or the phone mic?
It sounds to me your device is not paired correctly or you have connected device to the phone.
yes, it does display as being paired on phone and device and I have no problems with listening to music...
when somebody calls - he/she can hear me, but I can not hear, I tried to increase volume to max and in this case I heard a very very low voice of the caller...
and when I call back - I have no issues, mw600 works fine