| | If you've already been using the Microsoft Authenticator app and two-factor verification, you can choose the drop-down arrow next to the account name, and then select "Enable phone sign-in." This will allow to you sign in using only your phone for verification. | | This article shows how this works and includes more information. | | NOTE: Phone sign-in is currently only available on iOS and Android devices running Android 6.0 or above. | | |||||