The Bluetooth connectivity is AWESOME with my iphone 4 and other Bluetooth devices. I would buy another one for my wife's car if the phone calls were better. I can hear people fine in my car when they call me, but when I talk, the people on the other line hear a terrible echo and/or they cant hear me. I sometimes have to shout in order to hear them or i struggle with my headphones while driving in order to talk to them. This product is ALMOST AWESOME.