In terms of design, Messenger for Desktop has a very similar interface to Facebook.
It’s easy to use, doesn’t hog computer memory, and allows you to chat more discreetly without opening Facebook (like separate official Messenger apps do).
Virtually all mobile devices now have front-facing cameras, as do most laptops.
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.
If you’re one of the 2 billion people who use Facebook, you should have the Facebook Messenger app.
Messenger for Desktop solves this problem, as you can chat in full screen or resize the window to suit your needs.
This option is particularly useful if you're chatting at work and want to do it discreetly.
Just open the Face Time app and tap on the name of the person you want to call, or tap on the name of someone in your Contacts list and tap on the video icon.
Android has no built-in equivalent, but supports a variety of video calling apps.
Just surf to the Facebook website in your favorite browser.
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.