My friend gave me an ipad with an ATT sim card in it, while I can't get access to 3G networks thru it.. I'm now in China and there are only 2 Carriers in the list which are China Mobile & China Unicom, does that mean this ATT card can't work here? I got another ipad with a China Unicom card in it and it can connect to 3g network smoothly..
anybody can help me? I don't wanna discard this ATT card..