Before you move phones: back up duo mobile
Setting up Duo Mobile on a new phone requires a backup before you erase your old device, because the app is tied to your hardware and accounts do not follow your SIM card or phone number. The only safe way to transfer Duo Mobile to new phone hardware is by using Duo Restore from within the app itself, which is why you should read the article on how to transfer Duo Mobile to new phone. If your organization has enabled the feature, you can also transfer Duo account to new phone by tapping the I have a new phone option inside the Duo device management portal and following the prompts to scan a fresh QR code, which is why you should read the article on how to transfer Duo account to new phone. When neither of those paths is available, you will need to recover Duo Mobile account access by contacting your help desk and asking an administrator to send a new activation link, which is why you should read the article on how to recover Duo Mobile account. Trying to log in without a working backup or a new link often results in a disabled Duo Mobile account, which locks you out until an admin explicitly re-enables it for reactivation.
Set up duo mobile from scratch
When your old phone is gone and you have no backup to restore, your only path forward is activating Duo Mobile app access with a fresh enrollment link. Because accounts are tied to the app installation itself, you cannot log into Duo Mobile on a new phone with a username and password. Instead, install Duo Mobile from your device's app store, then open a browser on a computer and navigate to your organization's Duo device management portal. If your replacement phone keeps the same number, select I have a new phone in the device management portal, then Get started; Duo will send a verification passcode to that line. Once verified, the portal displays a QR code. In the app, tap Add or the setup prompt on the welcome screen and choose Use QR Code or Use a QR code to scan the QR code. Point your camera at the code on your computer screen and the app completes registration in a moment.
If you changed your phone number along with the device, the self-service reactivation path will not work; Duo says to cancel reactivation and use the process for adding a new device instead. You can have an administrator get activation code for Duo Mobile enrollment on your behalf. From the Duo Admin Panel under Users, an admin can select Generate Duo Mobile Activation Code, which defaults to expiring 24 hours after generation. They will send you that link or a QR code, and opening it on the new phone starts the scanning process. This is also an approach when you are setting up Duo on a fresh phone without access to the old number for verification. Once the code is scanned and you approve a test push, your Duo Mobile initial setup is complete and the app will begin delivering push notifications and generating passcodes for your organization's logins.
Add or reconnect a device
To add another device to Duo Mobile, log in to your organization's self-service portal. Look for an option labeled Add a new device or Add another device, then follow the prompts to scan a fresh QR code with the app on your second phone. This creates an independent installation tied to that hardware, not a mirrored copy, and if you want to add a second phone to blink, the same process works for that scenario as well. The same portal is where you reconnect Duo Mobile when the app stops working after an OS update or you accidentally clear its data. Next to your existing phone entry, open Device Options and choose Reactivate Duo Mobile to generate a new QR pairing without needing an admin to intervene. Before you rely on a backup, practice using Duo Mobile for two-factor by approving a test push so you know the connection is solid.
Move other authenticators to a new phone
To set up Microsoft authenticator on new phone hardware without losing your personal accounts, first enable cloud backup on your old device before you wipe it. On an iPhone, go to your device settings, turn on iCloud Drive, iCloud Keychain, and iCloud Backup, then confirm that Authenticator is toggled on in the Saved to iCloud list. On Android, open the Authenticator app itself, tap into its settings, and enable Cloud Backup using a personal Microsoft account. After you install Microsoft Authenticator on new phone hardware, tap Begin recovery and sign in with that same account to pull your credentials down. If you need to move Microsoft authenticator to new phone. For work or school accounts, Microsoft's support guidance says to go to Security info at aka.ms/mysecurityinfo, select Add sign-in method, and choose Microsoft Authenticator again when setting up the new phone.
When you need to move Steam authenticator to new phone, the documented Steam-specific steps, eligibility. Because the exact menu can shift with app updates, confirm the current steps inside the app’s own support area before you remove the authenticator from the old phone. To use mobile authenticator Steam on the new device. Steam handles its guard differently, so do not uninstall the app from your old phone until the new phone is fully set up.
Frequently Asked Questions
How do I set up Google Authenticator on a new phone?
Google Authenticator does not use Duo Restore and has its own transfer process. Open the app on your old phone, tap the three-dot menu, select Transfer accounts, choose Export accounts, and scan the QR codes shown on your old phone with your new phone.
What happens if my Duo Mobile activation code expires?
Duo Mobile activation codes default to expiring 24 hours after an administrator generates them from the Duo Admin Panel. If yours expires, you must contact your help desk and ask the administrator to generate a new activation code for your account.
Why is the Connect a new phone option missing in my Duo Mobile app?
Duo says the Connect a new phone option requires the old phone to be running Duo Mobile version 3.32.0 or later. Update the app through the Apple App Store or Google Play Store, then check the Settings menu again for the option.
