Google Duo


 Google Duo - Free High-Quality Video Calling App












Google Duo is a video chat mobile apple developed by Google, available on the Android and iOS operating systems. It was announced at Google's developer conference  on May 18, 2016, and began its worldwide release on August 16, 2016. It is also available to use via Google's Chrome web browser on  desktop and laptop computers. 

Google Duo lets users make video calls in high definition. It is optimized for low-banwidth  networks. End-to-end encryption  is enabled by default. Duo is based on phone numbers, allowing users to call someone from their contact list. The app automatically switches between Wi-Fi  and cellurar networks . A "Knock Knock" feature lets users see a live preview of the caller before answering. An update in April 2017 lets users worldwide make audio-only calls. 

In an email sent to Android phone manufacturers on October 5, 2016, Google announced that, starting December 1, 2016, Google Duo replaced Hangouts  within the suite of Google apps Android phone makers must pre-install on devices, with Hangouts instead becoming an optional app for phone makers. Google Duo


Learn about Google Duo

You can use Google Duo to make video calls to your family, friends, and anyone else. Your calls are encrypted, which means they're private to you and the person you're calling.

Set up Google Duo

Google Duo is a free service. Before you set up and use Google Duo you need:
  • A phone number
  • Access to a phone that can receive SMS messages
To use Duo across multiple devices and platforms, you need a Google Account.

Set up Google Duo for web

💁 Computer

Step 1: Open Duo

  1. On your computer, open duo.google.com

Step 2: Verify your phone number (optional)

Important: If you skip this step and you don't verify your phone number, you can only receive calls from people who you've previously called.
  1. Enter your phone number.
  2. Click Get verification code.
  3. Duo will send a code in a one-time SMS message to the number that you entered. (Carrier text-message rates may apply.)
  4. Enter the code that you received in the text message.
    • If you don't receive a text message, click Resend. 
    • If you still don’t receive a text message, click Back to make sure you entered your phone number correctly.
    • If you continue having problems verifying your phone number, visit the verification troubleshooting article.

Set up Google Duo on a Chromebook

Step 1: Install Duo

Download and install duo

Step 2: Connect your Google Account (optional)

To connect your Google Account, select Agree.
If you already use Duo on another device with your Google Account, sign in with the same account to finish setup.
After you connect Duo to your Google Account:
  • You can use Duo across different devices.
  • People with your phone number or Google Account info, like your Gmail address, can see that you use Duo and call you using the app.
You can add or remove your Google Account from Duo at any time

Step 3: Verify your phone number

  1. On your Chromebook, enter your phone number and make sure it's correct.
  2. Select Agree.
  3. Duo will send a code in a one-time SMS message to the number that you entered. (Carrier text-message rates may apply.)
  4. Enter the code that you received in the text message.
  • If you don't receive a text message, select Resend SMS.
  • If you have a cell connection and aren't getting the SMS, request a call by selecting Call me.
  • If you continue having problems verifying your phone number, visit the verificatin troubleshooting article

After you verify your number on Duo

  • People with your phone number can see that you use Duo and call you using the app. If you connect your Google Account, they can also connect with you across Google services.
  • Duo can periodically send your contacts and location to Google.
  • If you call someone not saved in your contacts, Duo will display your phone number so they can see who’s calling.

Use Duo to call your contacts

  • Video calls with anyone in your contacts who uses Duo: Call friends and family  across different devices like Android, iOS, computers, Google Home Hub, Lenovo Smart Display, and JBL Link View.
  • High quality audio and video: Your call’s quality automatically changes, based on your connection. 
  • Knock Knock: You can see a live video preview  before answering a call from one of your contacts. nd can only be seen by you and the person you're talking with. Google Duo

💁 Android

Step 1: Install Duo

Duo is available on Android phones and tablets. When you sign up, you'll get a verification code on your phone. Download and install duo

Step 2: Verify your phone number

You can skip phone number verification. If you skip this step, you have to connect to your Google Account.
  1. On your Android device, enter your phone number and make sure it's correct.
  2. Tap Agree.
  3. Duo will send a code in a one-time SMS message to the number that you entered. (Carrier text-message rates may apply.)
  4. Enter the code that you received in the text message.
  • If you don't receive a text message, tap Resend SMS.
  • If you have a cell connection and aren't getting the SMS, request a call by tapping Call me.
  • If you continue having problems verifying your phone number, visit the verification troubleshooting article

Step 3: Connect your Google Account

To connect your Google Account, tap Agree.
If you already use Duo on another device with your Google Account, sign in with the same account to finish setup.
After you connect Duo to your Google Account:
  • You can use Duo across different devices.
  • People with your phone number or Google Account info, like your Gmail address, can see that you use Duo and call you using the app.
You can add or remove your Google Account from Duo at any time

After you verify your number on Duo

  • People with your phone number can see that you use Duo and call you using the app. If you connect your Google Account, they can also connect with you across Google services.
  • Duo can periodically send your contacts and location to Google.
  • If you call someone not saved in your contacts, Duo will display your phone number so they can see who’s calling.

Use Duo to call your contacts

  • Video calls with anyone in your contacts who uses Duo: call friends and family  across different devices like Android, iOS, computers, Google Home Hub, Lenovo Smart Display, and JBL Link View.
  • High quality audio and video: Your call’s quality automatically changes, based on your connection. 
  • Knock Knock: You can see a live video preview  before answering a call from one of your contacts.
  • End-to-end encryption: Your calls are secure and can only be seen by you and the person you're talking with. Google Duo
💁 Iphone & Ipad

Step 1: Install Duo

Duo is available on iPhones and iPads. When you sign up, you'll get a verification code on your phone. Download and install duo

Step 2: Verify your phone number

You can skip phone number verification. If you skip this step, you have to connect to your Google Account.
  1. On your iOS device, enter your phone number and make sure it's correct. 
  2. Tap Agree. 
  3. Duo will send a code in a one-time SMS message to the number that you entered. (Carrier text-message rates may apply.) 
  4. Enter the code that you received in the text message. 
  • If you don't receive a text message, tap Resend SMS. 
  • If you have a cell connection and aren't getting the SMS, request a call by tapping Call me.
  • If you continue having problems verifying your phone number, visit the verification traubleshooting article verification troubleshooting article 

Step 3: Connect your Google Account

To connect your Google Account, tap Agree.
If you already use Duo on another device with your Google Account, sign in with the same account to finish setup.
After you connect Duo to your Google Account:
  • You can use Duo across different devices.
  • People with your phone number or Google Account info, like your Gmail address, can see that you use Duo and call you using the app.
You can add or remove yout Google Account from Duo at any time

After you verify your number on Duo

  • People with your phone number can see that you use Duo and call you using the app. If you connect your Google Account, they can also connect with you across Google services.
  • Duo can periodically send your contacts and location to Google.
  • If you call someone not saved in your contacts, Duo will display your phone number so they can see who’s calling.

Use Duo to call your contacts

  • Video calls with anyone in your contacts who uses Duo: Call friends and family  across different devices like Android, iOS, computers, Google Home Hub, Lenovo Smart Display, and JBL Link View.
  • High quality audio and video: Your call’s quality automatically changes, based on your connection. 
  • Knock Knock: You can see a live video preview  before answering a call from one of your contacts.
  • End-to-end encryption: Your calls are secure and can only be seen by you and the person you're talking with. Google Duo

Help

💁 Computer

Send feedback about Google Duo

You can report issues you're experiencing or send feedback about Duo.

Send feedback on Duo for web

  1. On your computer, go to duo.google.com
  2. In the top right, click Feedback.
  3. Enter your comment, or describe the problem you’re having.
  4. (Optional) Choose to include a screenshot and logs. This info can help us understand the issue.
  5. In the top right, select Send Send.

Send feedback on a Chromebook

  1. On your Chromebook, open Duo.
  2. In the top right, select More More and then Help & feedback.
  3. In the top right, select More More and then Send feedback.
  4. Enter your comment, or describe the problem that you're having.
  5. (Optional) Choose to include a screenshot and logs. This info can help us understand the issue.
  6. In the top right, select Send Send.

Send feedback about a call

After you finish a call, you may be asked to rate the call as good or bad.
  1. If you're prompted, enter your rating. 
  2. If you rate a call as "bad," let us know what the problem was.
Some information about bad calls will automatically be sent to Google so we can understand the issue better. The info won't include the call's content.

Need more help?

If you need more help, you can ask questions in the Duo Help Forum. Google Duo

💁 Android
  1. Open Duo.
  2. In the top right corner, tap More More.
  3. Tap Help & feedback and then Send feedback.
  4. Enter your comment or describe the problem that you're having.
    • Screenshot and logs: You can include a screenshot and your app usage to help us understand the issue.
  5. Tap Send Send.

Send feedback about a call

After you finish a call, you may be asked to rate the call as good or bad.
  1. If you're prompted, enter your rating. 
  2. If you rate a call as "bad," let us know what the problem was.
Some information about bad calls will automatically be sent to Google so we can understand the issue better. The info won't include the call's content.

Need more help?

If you need more help, you can ask questions in the Duo Help Forum. Google Duo

💁 Iphone & Ipad
  1. Open Duo.
  2. In the top right corner, tap More More.
  3. Tap Feedback.
  4. Enter your comment or describe the problem that you're having.
    • System data and screenshot: You can include a screenshot and your user log to help us understand the issue.
  5. Tap Send Send.

Send feedback about a call

After you finish a call, you may be asked to rate the call as good or bad.
  1. If you're prompted, enter your rating. 
  2. If you rate a call as "bad," let us know what the problem was.
Some information about bad calls will automatically be sent to Google so we can understand the issue better. The info won't include the call's content.

Need more help?

If you need more help, you can ask questions in the Duo Help Forum Google Duo

Can’t verify phone number

If you’re having problems sending or receiving the SMS verification code, try the following steps to finish verifying your phone number with Google Duo:

Step 1: Check your phone number

Make sure your phone number was entered correctly with the right country code. 

Step 2: Check for a good Wi-Fi or mobile data connection

  • Check your settings: 
    • Either Wi-Fi or mobile data needs to be on. 
    • Airplane mode needs to be off. 
  • Move to where you have a better connection. Your Wi-Fi or mobile data icon should have at least 1 bar. 
  • To test your connection, open a browser, like Chrome or Safari. Go to a website and see if it loads.  

Step 3: Check that you can get SMS texts 

  • Check your settings: 
    • Cell signal needs to be on. 
    • Airplane mode needs to be off. 
  • Ask a friend to text you to make sure your phone is working.

Step 4: Request a new verification code

On the verification code screen, you can ask for the code again.
  • If you don’t receive a text message, tap Resend SMS.
  • If you have a cell connection and aren't getting the SMS, request a call by tapping Call me.

Step 5: Try fixing the app

💁 Computer

Quit & restart on your Chromebook

  1. At the bottom right, select the time. 
  2. Open Settings Settings.
  3. Under "Google Play Store," select Google Play Store.
  4. Select Manage Android preferences.
  5. Select Apps. From the list of apps, select Duo.
  6. Choose Force Stop. Open Duo again.

Uninstall & reinstall the app

  1. Uninstall Duo
  2. Download Duo again.
  3. Open the Duo app.

Restart your device

  1. Turn off your device.
  2. Turn it back on.
  3. Open the Duo app.

Need more help?

If none of the above solve the issue, you can ask questions in the Duo Help Forum  Google Duo

💁 Android

Quit & restart on your device

  1. Open your Android device's Settings. 
  2. Tap Apps and then Duo and then Force Stop. Open Duo again. 

Uninstall & reinstall the app 

  1. Uninstall Duo
  2. Download Duo again. 
  3. Open the Duo app. 

Restart your device

  1. Turn off your device. 
  2. Turn it back on. 
  3. Open the Duo app. 

Need more help?

If none of the above solve the issue, you can ask questions in the Duo Help Forum Google Duo

💁 Iphone & Ipad

Quit & restart on your device

  1. On your iPhone or iPad, double-tap the Home button. 
  2. Swipe up on Duo. 
  3. Open the Duo app. 

Uninstall & reinstall the app

  1. Uninstall Duo
  2. Download Duo again. 
  3. Open the Duo app. 

Restart your device

  1. Turn off your device.
  2. Turn it back on. 
  3. Open the Duo app. 

Need more help?

If none of the above solve the issue, you can ask questions in the Duo Help Forum Google Duo

Can't find or sync contacts

If you're having problems finding or syncing contacts, try the steps below.

💁 Computer  

Step 1: Let Duo use your contacts

For web

Make sure you've given Duo access to your contacts. If you use Duo on your mobile device, you can use your phone’s contacts to make calls on Duo for web.
  • To sync your contacts with Duo for web, follow the Android or iOs instructions on your mobile device.
  • To see your contacts, you also need to add your Google Account to Duo on your mobile device. Make sure you're signed into Duo on all your devices with the same Google Account. 

For Chromebook

If you use Duo on a Chromebook, give access to your Chromebook’s contacts: 
  1. At the bottom right, select the time. 
  2. Select Settings Settings.
  3. Under "Google Play Store," select Google Play Store.
  4. Select Manage Android preferences.
  5. Select Apps. From the list of apps, select Duo.
  6. Select Permissions.
  7. Turn on Contacts.

Step 2: Check your contacts

Duo uses your phone and Google Account contacts.
To see if someone is in your contacts: 
  1. Choose the contact list you want to check.  
    • Google Account contacts: Go to contacts.google.com 
    • Mobile device contacts: Open your phone’s contacts. 
  2. Check that the person you’re trying to reach is listed. 
  3. If the person isn’t in your contacts, add them.

Step 3: Report an issue

If the person you want to chat with is in your Contacts and uses Duo, but you still can't find them, send us feedback.

Need more help?

If none of the above solve the issue, you can ask questions in the Duo Help ForumGoogle Duo

💁 Android

Step 1: Let Duo use your contacts

Make sure you've given Duo access to your contacts.
  1. Go to your device's Settings.
  2. Tap Apps and then Duo and then Permissions.
  3. Turn on Contacts. 

Step 2: Check your phone's contacts

  1. Open your phone's Contacts.
  2. Check that the person you're trying to reach is listed. 
  3. If the person isn't in your Contacts, add them. 

Step 3: Report an issue

If the person you want to chat with is in your Contacts and uses Duo, but you still can't find them, send us feedback.

Need more help?

If none of the above solve the issue, you can ask questions in the Duo Help Forum 

💁 Iphone & Ipad

Step 1: Let Duo use your contacts

Make sure you've given Duo access to your contacts.
  1. Go to your device's Settings.
  2. Tap Apps and then Duo and then Permissions.
  3. Turn on Contacts. 

Step 2: Check your phone's contacts

  1. Open your phone's Contacts.
  2. Check that the person you're trying to reach is listed. 
  3. If the person isn't in your Contacts, add them. 

Step 3: Report an issue

If the person you want to chat with is in your Contacts and uses Duo, but you still can't find them, send us feedback.

Need more help?

If none of the above solve the issue, you can ask questions in the Duo Help Forum. Google Duo


Fix sound or video issues

If you can't connect to Duo, the app might have an issue with its sound, video, or connection.

💁 Computer 

Check your internet connection Make sure your computer is connected to the internet.


If you’re connected to the internet and you’re still having video and audio issues, check your sound and video settings.On your computer, go to duo.google.com.
  1. In the top right corner, click Settings Settings and then Sources.
  2. Use the drop-down menus to select the correct audio and video sources.
  3. (Optional): To test your speakers or headphones, click Play test sound.
  4. Once you’ve selected your correct camera and mic, click Done.
Note: If you use Duo for web on a Mac with Chrome or Firefox, you might need to give microphone and video  permission in your computer's system preferences. 
 

If you have an internet connection but you still can't get Duo to work, restart the app:
  1. At the bottom right, select the time. 
  2. Open Settings Settings.
  3. Under "Google Play Store," select Google Play Store. 
  4. Select Manage Android preferences. 
  5. Select Apps. From the list of apps, select Duo. 
  6. Choose Force stop. 
  7. Re-open Duo. 
Note: If you’re using Duo for web, restart your device and try again. 
  
If nothing else works, restart your device and try again. 

Need more help?

Visit the Duo Help Forum  to ask questions and find tips on how to solve your audio or video issue. Google Duo

💁 Android

Here are a few things you can try to fix the problem:

Connect to Wi-Fi

If you're within range of a Wi-Fi network, try joining the network.

Check your mobile data connection

If you can't connect to Wi-Fi, make sure your phone has mobile data turned on and you have a strong signal.
To check that mobile data is turned on:
  1. On your Android device, open the Settings app Settings and then Data usage.
  2. Turn on Mobile data. 
Restart the app  
If you have an Internet connection but you still can't get Duo to work, try restarting the app.
  1. On your Android device, open the Settings app Settings and then Apps and then Duo and then Force stop.
  2. Open Duo again.
Restart your device If nothing else works, try restarting your device. Google Duo

💁 Iphone & Ipad


Connect to Wi-Fi

If you're within range of a Wi-Fi network, try joining the network.

Check your mobile data connection

If you can't connect to Wi-Fi, make sure your phone has mobile data turned on and you have a strong signal.
To check that mobile data is turned on:
  1. On your iOS device, open the Settings app Settings and then Cellular.
  2. Turn on Mobile data. 
If you have an Internet connection but you still can't get Duo to work, try restarting the app:
  1. Double-tap the Home button on your device.
  2. Swipe up on Duo.
  3. Open Duo again.
Restart your device If nothing else works, try restarting your device. 

Fix video or sound issues on a call 

If you're on a call and you experience video or audio issues, you should:
  1. Make sure the device's camera and microphone are not physically blocked.
  2. Check that the camera and microphone face the right way.
  3. Check your cellular or Wi-Fi connection. The Wi-Fi or mobile data icon should have at least 1 bar. If you don't see 1 bar, move to where you have a better connection.
  4. Restart the app and try again.
  5. Restart your device and try again.
  6. Check your device's battery strength. If your battery is low, charge your device. Google Duo

Fix missing or delayed call notifications

If you're not getting call notifications or they’re delayed, try these tips to fix the problem.

💁 Computer

Try common fixes


If you’re using Duo for web: 

Check your internet connection: Make sure your computer is  connected to the internet.

If you're using Duo on a Chromebook:

  • Connect to the internet : Learn how to connect your Chromebook to Wi-Fi
  • Re-open the app: To start Duo again, quit and re-open the app.
  • Download the latest version of the app: Check that you have the latest version of Duo for Chrome OS. If you don't, the page will say "Update."

Try more fixes for the web

Turn on Duo notifications

To receive Duo notifications on your computer, give notification permission to Duo in your browser settings.

For Chrome:

  1. In the top right of your browser, click More More and then Settings.
  2. In the search menu, enter “Notifications.”
  3. Click Content settings and then Notifications Notifications.
  4. Next to “Allow,” click Add.
  5. Enter duo.google.com
  6. Click Add.

If you’re using a different browser, check their website for instructions:
  1. Firefox
  2. Safari

Check blocked numbers  

  1. On your computer, go to duo.google.com
  2. In the top right, click Settings Settings and then Blocked users.
  3. Check if the number is blocked:
    • To unblock a number, click RemoveClose

Try more fixes for a Chromebook

Turn on Duo notifications

  1. Open your device's Settings Settings. 
  2. Select Google Play Store and then Manage Android preferences and then Apps and then Duo and then Notifications. 
  3. If notifications are off, turn them on. 
  4. Open Duo and then More More and then Settings and then Notifications. 
  5. If Call notifications are off, turn them on. 

Check blocked numbers

  1. On your Chromebook, open Duo.
  2. At the top right, select More More and then Settings and then Blocked numbers.
  3. Check that the phone number isn't blocked. Google Duo

💁 Android

Try common fixes

  • Re-open the app: To start Duo again, quit and re-open the app.
  • Download the latest version of the app: Check that you have the latest version of Duo from the Play store. If you don't, the page will say "Update."
  • Connect to Wi-Fi: If you're using Wi-Fi instead of mobile data, make sure your Wi-Fi is on.
    1. On your Android device, open your device's Settings Settings. 
    2. Tap Wi-Fi and then Settings Settings.
    3. Turn on Keep Wi-Fi on during sleep.

Try more fixes

If you need more tips, try these:


Check that notifications aren't blocked in both these places:
  • Your device settings: Open your device's Settings Settings  and then Apps & notifications  and then Duo and then App notifications, and then check that notifications are on. 
  • In the app: Open Duo and then More More and then Notifications and then Turn on Call notifications.

Check that you don't have "Do not disturb" on. Learn more on how to turn it off or change its settings to allow notification.

Check that the phone number isn't blocked.
  1. On your Android device, open Duo and then More More and then Settings and then Blocked numbers.
  2. Check that the phone number isn't listed.

If you've used "Force stop" to stop the Duo app when it wasn't working, you'll need to re-open the app to get notifications from it.
  1. Go to your list of apps.
  2. Tap Duo to open. 

Check that background data is on for Duo and Google Play services.
  1. On your Android device, open your device's Settings Settings. 
  2. Tap Apps and then Duo and then Data usage. 
  3. Turn on Background data.
  4. Repeat the above steps for Google Play services.

Battery saver can block Duo from sending notifications. Learn how to turn off battery
Apps not made by Google, like Juice Defender or Antivirus, may not allow notifications to work. Other manufacturers may have their own battery saver modes to check:
  • Sony: Try disabling “Stamina” mode.
  • Huawei: Mark Duo as a protected app through Energy Saver  and then Protected Apps.
  • Xiaomi/MIUI: Check that the power saving modes are off. Also, open the security app and then Permissions and then Add Duo to Autostart. Start the Task Manager, find Duo, and drag it downwards until the padlock icon appears. Google Duo

💁 Iphone & Ipad 

Try common fixes

  • Re-open the app: To start Duo again, quit and re-open the app.
  • Download the latest version of the app: Check that you have the latest version of Duo from the app store. If you don't, the app page will say, "Update."
  • Connect to Wi-Fi: If you're using Wi-Fi instead of mobile data, make sure your Wi-Fi is on.
    1. On your iOS device, open Settings Settings. 
    2. Turn on Wi-Fi.

Try more fixes

If you need more tips, try these:

Turn on Duo notifications
  1. Open your device's Settings Settings. 
  2. Tap Notifications and then  Duo.
  3. Turn on Allow notifications.
Check blocked numbers
Check that the phone number isn't blocked.
  1. On your iOS device, open Duo and then More More and then Settings and then Blocked numbers.
  2. Check that the phone number isn't listed.

Turn off "Do not disturb"

Check if Do Not Disturb is on or off:
  1. Open your device's settings Settings.
  2. Tap Do Not Disturb.
  3. Make sure Do Not Disturb and Scheduled are off.  

Allow Duo to work in the background


To send you notifications, Duo needs to be on in the background. 

  1. Open your device's Settings Settings. 
  2. Tap General  and then Background app refresh.
  3. Turn on Duo. Google Duo

Fix problems using Google Duo on your display or speaker

If you’re having trouble getting calls on Duo after you set up your Google Nest display or Google Home speaker, check that you’re signed in to the same Google Account on Duo and your display or speaker.

💁 Android

Step 1: Check your account on Duo

  1. On your Android phone or tablet, open Duo.
  2. Tap Menu Menu and then Settings Settings.
  3. Under "Google Account," check the account.
    • If you don’t see an account, connect your Google Account to Duo .
    • If you want to change your account, remove your existing account. Then set up Duo with the one you want to use.

Step 2: Check your account on your display or speaker

  1. On your Android phone or tablet, open the Google Home app Google Home.
  2. Tap Menu Menu, then check the account. Use the same one that's signed in to Duo.
  3. To change your account, tap your Google Account and change to another one.

💁 Iphone & Ipad

Step 1: Check your account on Duo

  1. On your iPhone or iPad, open Duo.
  2. Tap More More and then Settings.
  3. Under "Google Account," check the account.
    • If you don’t see an account, connect your Google Account to Duo
    • If you want to change your account, remove your existing account . Then set up Duo with the one you want to use.

Step 2: Check your account on your display or speaker

  1. On your iPhone or iPad, open the Google Home app Google Home.
  2. Tap Menu Menu, then check the account. Use the same one that's signed in to Duo.
  3. To change your account, tap your Google Account and change to another one. Google Duo

 Download Google Duo


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 Google Duo




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