I use the headset with my Samsung Galaxy S2 and everything works without problems: calling, voice control etc. I give a point deduction for the fact that you top speed when driving (-> ambient noise) the person on the phone can only hear very bad yet. I would hope that the headset could still louder. Another practical feature is that it is the same charging connector, as for my phone. So I can charge the headset with my cigarette lighter.
