I’m  on business in China。I‘ve used a China-unicom usm card in the iphone4,but it cannot work。
how can I use chinese phone number in China？
Also when I back In USA, My AT&T number can be used as before?
can anybody help me ? thanks a lot!
at&t iphone 4, at&t iphone 4 IN CHINA, iphone 4 at&t, use at&t iphone 4 in china, att iphone4I have iphone 3gs and still time to go until I can upgrade. My friend has an old phone and can upgrade immediately but doesn’t want to pay for the new iphone.  I offered her to pay for the upgrade if she agrees to take my 3gs instead.  Would there be any issues with having the iphone4 work on my account after exchanging sim cards? I have a 3gs so I obviously have an iphone data plan and an ongoing wireless contract.  I know this sounds intuitively simple but am concerned about artificial obstacles set up by AT&T which would prevent the exchange.  Anyone with experience doing the same?  Thank you!
My store was out of the iphone4 and I did a prepaid fulfillment order. Anyone else do this. I’m wondering how long this will take.  Thanks.
I own a white, 32gb iPhone 3Gs, but I am wanting to upgrade to the iphone4, however I am not eligible to upgrade until January of 2011 (missed the cutoff date by 12 days!!! > .
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