My car didn't come with the manual for the stereo and the screensaver was doig my head in ! Luckily, the answer was found online so I thought I'd post a link in case it helps anyone else with the same stereo. http://www.carsound.dk/log/temp/manualer/DB188RMP_MANUAL_ENG.pdf There's reference to a Clarion Bluetooth unit to handle phone calls but it's now discontinued. Having looked at Amazon, this looks to be a neat all in one solution and I'll let you know how well it works once it arrives - if I ever get a phone call that is. Witmoving Bluetooth Receiver Car Audio Stereo System Built-in Mic Music Wireless Receiver Music Adapter 3.5mm AUX Auto Kits for Computer Speaker Home TV (Black): Amazon.co.uk: Hi-Fi & Speakers