Try contacting t mobile instead.
They'll walk you through definetly
Sent from my C6833 using XDA Premium 4 mobile app
Thanks for the info. I flashed another ROM , and copy the settings . So now it work.
One more question. I am playing Clash of Clans. one issue i noticed is that the navigation bar is missing. I cannot exit the game since the bar is missing. Is this a bug in the rom ?