I recently bought a new black berry 9300 it was working fine when last night my bbm and internet was not working I tried from changing fire wall sim and downloading all sorts but it still dosnt work please can SOMEONE help !!!
Posted via BlackBerryForums.com Mobile

Resend your service books - How do I resend my service books? - BlackBerryFAQ

And then do a battery pull - 1st step to take if device is having problems? - BlackBerryFAQ

If those do not work, call your cell carrier and ensure that you have a Blackberry dataplan active on your account and that it is properly set up.