Some one stole my phone I don’t remember my old Apple ID
How do I recover my old Apple ID if my phone was stolen
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If you Apple ID has been changed, you won't be able to recover it. If you can sign into it now, then change it and your password. See:
Change your Apple ID https://support.apple.com/en-us/HT204071
Change your Apple ID password https://support.apple.com/en-us/HT201355
What to do after you change your Apple ID or password https://support.apple.com/en-us/HT204071