I bought a prepaid 4G sim card in China. The store clerk claimed that the card can be used internationally including in the US perhaps with roaming turned on?
But now I m in the US, the sim card cannot be registered on any US networks (AT&T, Verizon, T-mobile) and there is no service.
The phone is a US version Samsung Galaxy Note 3
Any solutions?
Added (1). Does it have anything to do with Access Point Name settings?
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How to get prepaid 4G sim card from China to work in the US?