Deactivate your mobile authenticator, then re-add it to your account after you update your iPhone's OS.
Apple launched iOS7 for iPhones yesterday, and if you haven't downloaded it already, you may want to take a few precautions before you do so you aren't locked out of all your Blizzard games.
According to a post on the Battle.net forums and the support page, players were warned that the new iOS could cause the mobile authenticator to reset. To save yourself a hassle, Blizzard is suggesting the following:
- Sign up for the free SMS Protect service. In the event of a lost, broken, or accidentally reset authenticator, users with SMS Protect can remove the old authenticator from their account with a texted security code. For more information, visit the SMS Protect FAQ.
- Write down your authenticator's Serial Number and Restore Code so that you may restore your authenticator to your phone after the OS update is finished.
- Temporarily remove the authenticator before updating. Reattach the authenticator again once your iOS update is complete.
- Update over Wi-Fi. iPhones that are updated over Wi-Fi rather than through a computer are less prone to accidental resets.
Why the concern? It appears that the new iOS doesn't like apps that have not been designed for it. A post on CNet suggests that any app that is not compatible with iOS7 could just disappear after the update. It suggests deleting unused apps, and updating current apps to iOS7-compatible versions if available. Then, before you update, back up everything.
From Blizzard's warnings, it appears that the mobile authenticator may not be fully compatible with iOS7. It isn't clear if it is working on a fix -- or if one is really needed -- but better safe than sorry. The authenticator is a valuable part of your Battle.net account, as it does an impressive job of guarding against hacks. So you'll want to make sure that you follow Blizzard's steps closely so you don't get locked out of your raid on Orgrimmar.