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This feature lets users see live preview of the caller before accepting the video call. It is known as google duo ‘knock knock’ feature.

So, they can see what your camera is capturing while the call is ringing.

You can see a text on the screen warning that you are visible on the receiver’s screen. When you make a video call, your front camera is open and can see your face on the screen. You can also see a group of emojis to send as individual messages before making a call. When you choose any contact from your list to video call with google duo, you will be presented with three options voice call, video call, and message. The video calling interface is also awesome for google duo. However, you can invite them to use google duo via Facebook, Instagram, Gmail, WhatsApp, and direct messages. If the contact doesn’t have google duo installed, you can’t make a video call with them. On your contact list, there will be visible which of your contacts you can call. If you are using a mobile phone, just open the google duo application, click on ‘New call’ and you can see your contact list. Making video calls with google duo is simple. Google duo video calls on smartphoneĪs a video calling application, google duo provides flexibility to users so they can make video calls anytime.

If you use Google account to sign in to google duo, people with your Google Account info, like your Gmail address, can see that you use Duo and call you using the app. If you use phone number, then you can direct video calls through duo to all of your phone contacts who also have google duo installed on their device.