IPhone 3GS no service, cant Activate.
So i purchased an Iphone 3gs on Ebay and I cant get past the Activation screen.... Its telling me i have no service and every time i try to activate i get the same error message... Something along the lines of "Cant connect to the server at this time". The IMEI is fine ive checked it, the Phone itself im 99% certain was unlocked by o2 for a small fee. The ICCID is apparently Unknown. Im using a Giff Gaff Pay as you go sim in it.... Ive tried several other Sims from o2 and T-mobile with no joy. Ive no idea what OS or firmware its using as i cant get into the phone, if i could id perhaps try and follow some instructions on how to fix this as ive seen many videos etc.... Any help would be appreciated.