Turn your bluetooth to on, on your phone. Press the green talk button on the HU, turn the dial till it reads 'BLUETOOTH'. Go back to your phone/bluetooth settings, to 'Add device', it should search and find it under 'Handsfree'. Add it or connect with the standard code of '1234', the bluetooth reception bars should come up on the HU left hand side screen. Receiving calls will ring out and stop music playing, press green talk button to answer and talk. Or you can make a call and just talk through the cars handsfree system. You can adjust how loud the other person is by turning the volume dial up and down, i have mine on 9. Bobs your uncle.