Dont Use
If you ever want to use a new phone for the remainder of your lifetime, no use Authenticator. I upgraded my phone and none of the codes show on the new app. There are some articles that tell you how to move the data to a new device, but none of them worked for me and many others. I believe theyve discontinued this ability. Now I have to contact each cloud app I use and see if theres a way to get into the account without generating an Authenticator code.
tivofan2 about
Google Authenticator, v3.0.0