I just picked up a new pair of HF3s and they sound great. Just one concern though - whenever I'm on a call using these headsets, the mic activates and I could hear everything around me through my earbuds. Does anyone else have the same issue? I heard that it may be an iOS issue with the iPhone 4S being that it 'allows the caller on the iPhone hear what the other end could hear through the earbuds using the headset's mic', but nothing's been confirmed...When I switch back to music, the mic turns off and everything goes back to normal.
Is this something that's expected with these pairs of headphones?
I'm just concerned if I received a defective unit and should return them for another pair...