I have a 2014 LT, with the standard radio. I have my phone (Sprint LG Optimus G) paired via bluetooth. Calling/dialing/hangup work fine, but I cannot get the mic to mute from the steering wheel controls. Every time I hit the "mute/hangup" button, the phone just hangs up. I've tried tapping, short press, and long press. Am I missing something? Or is this an incompatibility with Android?