Sounds kind of odd but here is the issue. I have an aftermarket double din navi unit in my 2009 Camry. It has Bluetooth built in, but the mic is horrible so I don't use it. Instead I picked up a BlueAnt S4 hands-free which works well. The problem is the Car aftermarket navi unit keeps prompting ever minute for a "pairing request". I selected "unpair" on the EVO so that only the BlueAnt shows but this doesn't stop this request over and over... I cannot find anyway to turn off BT in the navi unit either. Basically this just drives me nuts with the loud notification noise every minute coming through the BlueAnt from the EVO. Anyone have any ideas??