Moving Duo to a new phone means signing in with your Google account and letting the app restore your contacts

Google Duo (now part of Google Meet) transfers to your new phone through your Google account. When you sign in on the new device, Duo recognizes your account and restores your contact list automatically. The whole process takes about five minutes and requires only your Google password and an internet connection.

The steps differ slightly between Android and iPhone, but both routes start the same way: install Duo from the Google Play Store or Apple App Store, then sign in with the Google account you used on your old phone.

Key Takeaways

  • Duo transfers through your Google account, so you must sign in with the same email address you used before.
  • On Android, Duo may already be installed; on iPhone, you read it from the App Store.
  • Your contact list and call history restore automatically once you sign in and grant permission to access your contacts.
  • If you use a different Google account on the new phone, you will lose access to your old Duo history and contacts.

Setting up Duo on Android

Android phones often come with Duo pre-installed. Open the app and tap Sign in. Enter the Google email address and password you used on your old phone. If Duo is not already on your device, go to the Google Play Store, search for "Google Duo," and tap Install.

After you sign in, Duo asks for permission to access your phone's contacts. Tap Allow when prompted. The app then syncs your contact list from your Google account and restores any previous conversations. This usually takes a few seconds on a WiFi connection.

If you see a prompt asking whether to use your phone number or Google account for calls, choose whichever you used before. Switching between the two can confuse your contacts about how to reach you.

Setting up Duo on iPhone

Open the App Store, search for "Google Duo," and tap Get. Wait for the read to finish, then tap Open. The app launches and shows a sign-in screen.

Tap Sign in with Google and enter your Google email address. On the next screen, enter your password. iPhone then asks whether to allow Duo to access your contacts — tap Allow. Your contact list syncs within seconds.

Unlike Android, iPhone does not offer a choice between phone number and Google account for Duo calls. The app uses your Google account by default.

Restoring your contact list and call history

Once you sign in and grant contact permission, Duo automatically pulls your contact list from your Google account. People you called before appear in your recent list, and any contacts you saved in Duo show up under their names.

Call history does not transfer — you will see a blank recent list at first, but it fills up as you make new calls. If you need a record of old conversations, take screenshots on your old phone before switching devices.

If a contact does not appear, make sure they are saved in your phone's contact app with their phone number or email address. Duo can only show people who are already in your contacts.

Troubleshooting sign-in problems

If you cannot remember your Google password, go to accounts.google.com on any web browser and click Forgot password? You will need access to a recovery email or phone number linked to your account. Google sends a code to that address, and you use it to reset your password.

If you signed in but your contacts did not appear, check that Duo has permission to access your phone's contacts. On Android, go to Settings > Apps > Duo > Permissions and turn on Contacts. On iPhone, go to Settings > Privacy > Contacts and make sure Duo is toggled on.

If you are switching from a different Google account, you will lose access to your old Duo history. There is no way to merge accounts or transfer data between them. If you need to keep both accounts active, sign out of Duo, switch your phone's Google account in Settings, then sign back into Duo with the other email address.

What happens to your old phone

You can leave Duo installed on your old phone or uninstall it — the choice does not affect your new phone. If you keep it, people can still reach you through that device if it stays connected to WiFi or mobile data. If you uninstall it, incoming calls go nowhere.

Before you sell or give away your old phone, sign out of Duo. Open the app, tap your profile picture in the top right, then tap Sign out. This prevents the next owner from accessing your account.

Using Duo on multiple devices

You can sign into Duo on more than one phone or tablet at the same time using the same Google account. Incoming calls ring on all devices where you are signed in. This is useful if you have a work phone and a personal phone, but it means you might answer the same call twice by accident.

If you want calls to ring on only one device, sign out of Duo on the others. You can always sign back in later.

Frequently Asked Questions

Do I need to uninstall Duo from my old phone before setting it up on a new one?

No. You can have Duo installed and signed in on multiple phones at the same time. Incoming calls ring on all of them unless you sign out. Uninstalling from your old phone is optional and does not affect the new one.

What if I do not remember which Google account I used for Duo?

Check your old phone's Duo app — tap your profile picture to see which email is signed in. If you no longer have the old phone, try signing in with your most commonly used Google account. If that does not show your contacts, try other accounts you own.

Can I transfer my Duo history to a different Google account?

No. Duo history and contacts are tied to the Google account you signed in with. If you switch accounts, you start fresh with an empty contact list and no previous calls. You must use the same account to keep your history.

Why do some of my contacts not appear in Duo even though I signed in?

Duo shows only contacts saved in your phone's contact app with a phone number or email address. If someone is in your Google contacts but not in your phone's local contacts, they will not appear in Duo. Add them to your phone's contacts to see them in Duo.

Can I use Duo without a Google account?

No. Duo requires a Google account to sign in and make calls. You cannot use it with just a phone number.