well if it is the mytouch, i have a G1 and i had a wierd issues in connecting to my x5 through blue tooth till they updated the firmware, if urs is updated and still dosent connect you can hack the mytouch and enable superuser command and allows u to use the blue tooth to connect to any device without tmobile being anal about anything. if your thikning about it heres the mod CyanogenMod | Android Community Rom based on Donut tree. there are risks but iv done it and speed up my phone and enabled it to do alot. hope it helps