If I buy an iPhone 4S in mainland China, can I use it in the USA? If so, which carriers are compatible with the model sold here?
Also, is it possible to get a pay-as-you-go plan with data, or at least some other kind of short-term plan with data that is compatible with this phone? My girlfriend is going to study in the States for a semester and she wants to use the phone she currently has while she's there.
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