How do I edit my account phone number?
How do I edit my account phone number
[Re-Titled by Moderator]
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You did not mention which iPhone you have and you did not mention which iOS version are you using at present. With limited information I recommend that you go to ➔ www.appleid.apple.com and log in with your Apple ID and Password. Once you are logged in then you can change or edit your trusted phone number and also change / edit your trusted devices.
Axel F.