On the touch screen just go to the connectivity section (I think that's what its called) and then 'connect phone' find the required phone and hit the car play symbol, not the bluetooth symbol. You can also have your maps running off one phone and listen to music from another if the map one is on car play and the other is on bluetooth. That's whatI have noticed anyway. Thats with iPhones.My iphone connects to the Gren everytime wirelessly when I start the car. However, if I leave the vicinity of the car while it's running and then return the Apple carplay is lost. Anyone know a quick way of reconnecting other than turning the phone on/off. I've tried toggling bluetooth and wifi on/off and also plugging the cable in but it doesn't seem to work. I think the phone or the car still think they are connected but not showing as such.