'A link at the bottom of the confirmation page lets you choose to use a password instead if your phone isn't handy, or you can switch back from your password to the Microsoft Authenticator,' the post said. However, your preferences can always be changed. Once you set up phone sign-in, you will begin receiving notifications to sign into your Microsoft account on your smartphone. Once installed, add your account credentials into the app, and Microsoft will automatically prompt you to set up the feature, regardless of whether you are on Android or iOS. If you don't already have your Microsoft account linked to the Authenticator app, you'll first need to download the app from your phone's app store. Tap on your account tile to access the drop-down menu, and select the Enable phone sign-in option. End user data backup policy (TechRepublic Premium)įor users who already have the Authenticator app installed, the feature will need to be configured.