What to do if your Authenticator gets stuck at any point during set up.
Troubleshooting steps for disconnection problems with the Blizzard mobile app
What to do if you can't resync your authenticator.
Troubleshooting steps for missing notifications on the Blizzard Battle.net Mobile App
What to do if you get a "Something went wrong" error when logging in to the Blizzard Battle.net Mobile App
Troubleshooting adding an authenticator to your account after receiving the message "Error... An unexpected error occurred. Try again later."
Minimum system requirements for the Blizzard Battle.net Mobile App.
Information on the Blizzard Authenticator
Information on Blizzard Phone Notifications
Can't log into Blizzard website or get online when logging with the Blizzard Battle.net desktop app.