Hi, I fixed a suction phone holder to sat nav screen (in hinesight stupidly) and now find that some of the touch screen is not responding to many commands, eg; cannot input an address for navigation, unable to change hours & minutes on clock, cannot get travel information (petrol consumption distanced travelled etc;) alter screen brightness etc; some climate controls not responding and so on. Most other commands work ie: reverse assistance functions fine, all electrics ok, lights & horn ok. Had suggestions to disconnect battery, reboot disc in rear etc; but I am not happy to attempt until all info: is gathered. Be glad of any help & comments, thank you. rg7539.