I am thinking about switching from my cable provider to FIOS for TV and Internet. If I make the change, I will have to change my Apple ID to another email address. I read the steps on Apple's website to change the email address, but it didn't mention anything about Two Factor. Apple's site said to log out of all iCloud and other services on all devices before making the change on the Apple ID site. However, if I log out on all devices, how would I be able to log back in on any of them because I wouldn't be able to get the Two Factor code? Am I missing something?