When it disconnects (around ever 10 to 15 minutes) your maps will not display on your phone because they are on the safety feature to only show in car. Car says disconnect and to top it off you can't even disconnect from hands free link until your car is off. So I find myself on the side of the road and using paper maps every time I need GPS. Even around town where I have full signal it disconnects constantly. Plus you can't use Bluetooth if your phones compatible. 110% trash.