1. iMore Question's Avatar
    hi, i've been given an iphone from the US (i dont know the original network), i could use it in Thailand with a thai sim card but now i'm in vietnam and it doesnt work with a vietnamese sim. Can someone please explain me why, and how i can use it with a viet sim?
    01-13-2014 03:04 AM
  2. iOS Gravity's Avatar
    I'm not sure about this but can't you check the carrier in iTunes?
    01-13-2014 09:18 AM

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