Compatability is getting worse and worse in my car. I have to make sure I connect AFTER the stereo is booted up and unlocked the phone or it complains about the usb cable and power protection. Latest updare causes the stereo to disconnect every ten minutes saying "you must stop the vehicle to use this device" so I either have to get my passenger to keep unplugging the phone and plugging it back in, or just pull over and simply abandon it. Aside from this, it's a great app. Lots of features.