How do you change two factor authentication on your iPhone?
How do you change two factors authentication?
What do you mean? How do you want to change 2 Factor Authentication?
If you mean you want to turn 2 Factor Authentication off, if you already use two-factor authentication, you can no longer turn it off. Certain features in the latest versions of iOS and macOS require this extra level of security, which is designed to protect your information. If you recently updated your account, however, you can unenroll for a period of two weeks. Just open your enrollment confirmation email and click the link to return to your previous security settings. Keep in mind, this makes your account less secure and means that you can't use features that require a higher level of security.