I have jailbroken my OTB 1.1.2 and I am also using T-Mobile service. Everything works great on the phone EXCEPT when I put the phone to sleep (lock the keys) within 10-15 seconds my service is lost. When I unlock the keys, it will regain the service just as if I were to reboot the phone. I can get around this by a) playing music from my ipod, turning the music all the way down, then lock the keys or b) charge it and lock the keys. Both of those keep the service on, but is very annoying to do and I am not going to deal with it... Any help?