i have a BB 8900 javeline. it crashed after i installed some applications on it, at which time i was using OS 4.6 After the crash i reformatted the hand held with OS 5.0, everything worked fine until i noticed that i couldn't send sms, but i can receive sms, it doesnt show the name of the sender. it only shows 123. and when i try to send an sms it tells me requested facility not subcribed. i use MTN nigeria network. pls anyone help its urgent