How to make videocall on Facebook from my iPhone 5?

How can i make videocall on Facebook from my iPhone 5?

Before you can call friends from Facebook, you need to complete a quick, one-time setup. You'll be asked to complete the setup the first time you try to call a friend, or the first time a friend tries to call you.

To call a friend:

Go to their timeline and click Call at the top.
Click Set Up and follow the instructions for your browser.
Once you've successfully completed the setup, the call you've started with your friend should connect automatically. If it doesn't, you can call again.