How to carrier unlock my iPhone 7?


    Hy Sir,

    I bought used iphone 7 from USA and it was working perfectly. When I came back to my country (South Korea), it's not working and they said that it is company (carrier) locked. I asked my friend in USA to contact your centre with IMEI number and they said it's not locked.

    Can you please tell me what's the issue here in my case and how can I solve it?


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