Restore iCloud
I am trying to help my husband set up his new iPhone 11 Max Pro because he just shattered his old iphone so we are not able to receive the code to download his iCloud data from his old phone to his new one
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2 Factor Authentication verification code? See if anything here helps. If necessary, you can use account recovery as explained in the link at bottom of the article.
Verification code - how to get one and sign in with two-factor authentication.