i use the AUX and a little toy from iLive, a BT to 3.5mm stereo audio plug device (under $20 from our local Wal-Mart)... the phone connects once in the phone cradle (car mode automatically activated), and disconnects when the screen goes blank once out of the cradle (BT turns off when the phone screen goes blank is part of the Android Tuner Free app). simple and cheap - just need a micro USB power (included in the package), that is all...