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I forget iCloud username and password?So I can’t activate my iPad mini.How can I solve this matter? please give me answer. Thank u

There are only two ways to unlock an iCloud locked device: Remember your Apple ID and passwordContact Apple and show proof of purchase/ownership. They can unlock it for you if you can prove that you are the original owner. If you bought this from someone else and they didn’t tell you it was locked, then try to return it if you can.