i just sold my i phone

, believe me i didnt want to, i feel lost without it! my iphone sim is now in a blackberry (WHICH SUCKS!!!) and i have run into the same problem:
and i can make and receive calls but no internet access.
i hate this blackberry i cant figure out how to do anything on it, and it is still full of the last owners info, like call logs, contacts, emails....the list goes on.
i was thinking maybe a system resore will reset the network data and get the stupid blackberry thing online, anyone have any advice on this issue?