use unlocked/jailbrocken iPhone 3G for AT&T

yev6615

New Member
Oct 24, 2008
2
0
0
#1
I was wondering if I would buy an unlocked iPhone 3g on ebay or some website and use an AT&T sim card would that be able to get me out of paying for the extra 30$ a month? And if it does work what happens if I try to use internet?
 

yev6615

New Member
Oct 24, 2008
2
0
0
#3
would it work if it was jailbrocken then?