I am using a Nokia N97 with latest firmware on the phone and am having mixed results. The voice quality on the HF for the phone sounds great. Bluetooth audio is hit and miss. When I first hooked it up the BT audio showed the name, artist, album on the screen without issue but the sound was horrible, very hollow and tinny sounding, then the next time I used it the display no longer showed but the sound still came through (horribly). Last night I remembered that some ppl in this forum had some luck in re-pairing their iPhone's to get better results so I tried that. BT audio improved dramati