I have a samsung s3 with 4.1.1 fw. I cannot sync the phone's bluetooth with my car's BT. I drive a mercedes B200. So I made all the necessary research to find that it is samsung s3's issue. It cannot backward compatible with my car's BT rev 3.0. S3 runs at BT rev 4.0 period. So I am left with a handy dandy ear piece BT everytime I drive. Any serious recommendations welcomed.