Thanks for the advice. I think I've come to the end of the road, really. I've totally removed all reference of the D3 from my mobile, and even reinstalled the firmware on it. I've deleted the pairing from the D3, and re-registered the phone. But again, it just doesn't work. My Nokia N73 recognises the D3, but doesn't switch to the headset profile. The only way to get successful handsfree is to dial a number on my mobile, start the car (and hence power-up the D3), and then, once the D3 has booted, I can drop the call. All subsequent calls then work absolutely fine, but it reverts to bein