I have the handsfree BT in my Mini, audio horrible at any speed. I EVEN moved the mic to driver side, no difference. I have since un-paired my phone since it is mostly useless. If I want to make a call I use a Jawbone. I was playing Pandora thru the aux plug, and an HTC Evo 4g, BT was off, phone Not paired to mini, my cell rang in car, I clicked steering wheel to take call...could hear them fine, and they heard me fine. WTF? Ended call, music came back...might work with any cell that has a 1/8th inch aux out...to a mini aux in, worked for me @ 70 mph.

 

Yeah but that "will not" work if you are listening to the radio or the CD player as the audio was muted by the phone and the audio out was from the head phones to the AUX jack (which you were listening to) and mic on the phone picked up your voice.

 

maybe but it still sounds way better than Mini version of a handsfree phone, I feel ripped off