Need help with second hand activating iphone 3gs. tried everything.:(

I have an iphone 3gs, which my brother got given and he gave it too me, my brother says its on O2,,i turned it on and it has a setup thing to activate the iphone but it doesnt activate, I went to try it with itunes but the new itunes has faults on it, and I cant take it to a shop because I live to far away from shops.
At the start of the set up, it says about the language, the next one is country or region, and the other WIFi... I really want to do the iphone tongiht, please need helppp<3<3
Asked May 11, 2013

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.