If you’re using Apple’s two-step verification system for logins, I have just one (not two) questions for you: do you know where your Recovery Key is?
A friend recently went through a multi-week set of interlocked problems when he was locked out of his Apple ID account on his iPhone, and couldn’t find his Recovery Key. He wasn’t ultimately able to get Apple to unlock his account. (During this period, his phone also locked up for a few days and he couldn’t receive texts or alerts, either.)
He had forgotten he’d enabled two-step verification, which is the older of Apple’s two methods of using a second piece of information to validate that you’re the accountholder. With the two-step system, Apple uses something akin to Find My iPhone to provide a code on your iOS devices or sends an SMS that you use to complete your login.
Read more here:: Tune up your two-step Recovery Key