ATT 3g connection problem

[Yu Ren]

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..

 

[MattIM]

I Think You Answered Your Own Question...

The AT&T sim card is for the USA. You can probably get a sim card for the two local carriers in China. You don't have to get rid of the sim card, just put it away in a safe place.

Since you have two providers in China, you might want to get a sim card for the other one so you can compare services?