A cell phone can have two difference Bluetooth profile, "handsfree" or "headset" profile. If your phone have only "headset" profile it will not work with most factory Bluetooth. If it has "handsfree" profile the chance of it working is greater. A "headset" profile basically just let you pair a phone to a headset, a "handsfree" profile will let you transfer contact, ect.. to the vehicle Bluetooth system. You can always go aftermarket like Parrot or Sony Ericsson, ect... and it's a better chance of all Bluetooth phone working.