Well 2 days after Jailbreaking, I've found a bug. My stereo BT headset doesn't play in stereo, just mono out of both ears. I have the Plantronics Backbeat 903 and one of the features of that is to enable extra bass, press the button on the right earpiece until you hear a beep. That doesn't work now either. Is anyone experiencing stereo BT issues?? BTW, this is an AT&T iPhone 4S 64GB.