I reset my iPhone but now can't activate it cause it keep saying I can't use my apple id to do that

If you're the device's original owner, take the device and its original purchase receipt to a physical Apple Store.

If not, but you're able to contact the person who set the lock, send themthis linkand tell them to follow its instructions.

If neither of the above applies, you can't activate the device but may be able to get it refunded. Apple won't remove the lock for anyone other than the original owner(assuming they're alive.)

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Click here and pick a method.

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