Cannot complete iCloud two-factor authentication after phone swap

i swapped phone like 3 days ago, i was asked to sign in icloud after moving my data from the old phone to the new one, i input my gmaiil followed by the password but cant get pass the two factor authentication. The response i have been getting is i should input a valid phone number. what could be the cause?


[Re-Titled by Moderator]

Original Title: Cannot complete iCloud two

Posted on Dec 9, 2025 2:58 AM

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Question marked as Top-ranking reply

Posted on Dec 9, 2025 4:11 AM

Your iPhone is asking for a “valid” phone number because the trusted phone number on your Apple ID does not match the one you’re entering.


Fix by:

  1. Entering full international format
  2. Trying the old number linked to the Apple ID
  3. Using another trusted Apple device
  4. Adding the new number in Password & Security
  5. Using Account Recovery if no trusted device/number remains
2 replies
Question marked as Top-ranking reply

Dec 9, 2025 4:11 AM in response to rockson162

Your iPhone is asking for a “valid” phone number because the trusted phone number on your Apple ID does not match the one you’re entering.


Fix by:

  1. Entering full international format
  2. Trying the old number linked to the Apple ID
  3. Using another trusted Apple device
  4. Adding the new number in Password & Security
  5. Using Account Recovery if no trusted device/number remains

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Cannot complete iCloud two-factor authentication after phone swap

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