Facebook social network is the largest networks on the Internet, and used by more than billion users, most of users have list of friends close to them and communicate with them on a permanent basis, but the user needs sometimes to communicate voice with his friends, so he resorts to applications such as Viper and others.
The thing which no one know it that there is a service to make voice calls through the Facebook application itself, and also the Facebook Messenger application for Android and iOS.
How to make voice calls using Facebook application:
1- Go to the person you want to call him from chat list.
2- Press the button i located in top.
3- Press the Call button.
If the button is not enabled, the reason is the person you want to call him is not on the site in the same time.
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