Just tap on the name of a person with Duo and you’re immediately connected via video.As an added treat, a feature dubbed Knock Knock lets you see who’s calling before you answer.Messenger video calls work on your computer as well.

Virtually all mobile devices now have front-facing cameras, as do most laptops.
So video calling is both easy to use and pretty much everywhere.
If you don’t see your list of Facebook contacts on the right, click on the Options icon in the lower right corner to display it.
Click on the name of a contact you want to call, then in the chat window, click on the camera icon to place the video call.
But if you like the interface, you can always coax them onboard.
Launch the app on your mobile device, then tap on the New Call or Contacts button.Just fire up the program, find the person you want to call, and tap on the video call button.The bonus here is that you can make or receive a call on your mobile device as well as on a Mac or Windows computer using the Skype software.Another free messaging app for i Phones, i Pads, and Android devices, Whats App lets you text someone, make a voice call, or place a video call.After you launch the app, tap on the Calls icon at the bottom and then tap on the Contacts icon in the upper right.Whats App also supports Windows and Macs, so you can use the software to send and receive video calls through your computer. Then you can make and receive video calls through Amazon’s Alexa app.