If you want to mirror your smartphone display on the dash display, you need a converter to connect the phone's micro USB to the car's HDMI input. Looking around, some of these converters sell for about £30, however I bought one of these for less than £6 and it does the job just fine: Just remember, you also need a seperate USB to micro USB lead to power the converter. You may be asking yourselves, why bother? My intention was to run an app I have on the phone called MAPS.ME and to follow my progress along an uploaded route on screen, but the system won't allow the HDMI to be active if the engine's running, which kind of scuppered my plan. Never mind. I can still check my location when I make a stop, which is more than I can do easily with the satnav.