I bought an iPhone 7 from this guy icloud is unlocked but not the carrier which is sprint or boost iambguessing they are the same
How to unlock carrier
User-centric queries/comments such as this are perhaps best put to Apple's public community support forums, run by AppleCare, and/or Apple's twitter support account, vs. risking off-topic here in the DevForums, thanks and good luck.
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Tags: off-topic thread