I have a Motorola HF850 bluetooth unit in my car. It is not an earpiece type product. This unit has a wire connected to my Alpine HU and will interrupt whatever is playing and switch the phone audio. It plays through the stereo speakers. A mic placed on an area on the steering wheel column centered. All work fine. btw, this is installed in a convertible. I purchased my Android believing that once I pair my new phone to the HF850 I will be able to use the handsfree device the same way. No such luck. There is some kind of incompatibility issue with it. I am looking for solid recommendations for a similar unit that will allow the phone to be taken into the car, receive calls that will interrupt any audio playing on the HU, talk through a mic, etc., etc., etc. What is out there that will seamlessly work with this phone and my car??