Okay i have At&t... When i first got the phone... it would keep telling giving me a Data Error. Then i went here
http://www.blackberryforums.com/gene...2-1-101-a.html
put the new OS in and i got the Media Net icon to show up. Try that, it should work. You need a Blackberry Plan in order to get the Browser to show up, but if you can get Media Net running, and you surf the web for little things, then you are good to go, otherwise you are better off gettng the $30.00 unlimited PDA plan or whatever it is for At&t