iPhone Users Can Now Make Free Calls Through Facebook
Android Community

Facebook is rolling out an update to its Messenger app that will allow Facebook friends to call each other free of charge. The Messenger app will get a new button that will allow audio calling over a Wi-Fi or data connection. The catch is that the new service is only available for now in the U.S. and Canada and currently works only on iPads, iPhones and other iOS devices. The world's number one social network is expected to unleash the voice calling feature for Android and Windows phones soon.

 

What Else You Need To Know

  • Users can simply call someone by selecting that person's name in Messenger, tap the "i" button, and then press "Make free call," and the person receiving the call will receive a push notification saying their friend is calling them.
  • Unlike the more established VoIP services Skype and Apple's FaceTime Facebook Messenger doesn't currently provide video calling.
  • he new features for Facebook Messenger for iOS will arrive automatically and requires no update through the App Store.

Other sources

We just tested the feature and the call quality was amazing over WiFi. This is a great move by Facebook. - Dylan Love, Business Insider  
This is a pretty handy feature for users of the social network, especially since unlike with Skype, Viber or other VoIP calling apps, you already likely have a wide network of contacts you’d actually want to have live voice conversations with built-in and ready to go on Facebook - Darrell Etherington, Mobile Crunch  
Business Insider SAI
Now You Can Make Free Phone Calls Through Facebook's Messenger App (FB, MSFT)  

We just tested the feature and the call quality was amazing over WiFi. This is a great move by Facebook.

Mobile Crunch
Facebook Rolls Out VoIP Calling To U.S. iOS Messenger Users
iPhone Hacks
Facebook Rolling Out Messenger VoIP to U.S. Users
GigaOM
US iPhone users can now make free calls through Facebook  

Facebook began testing the service in Canada a few weeks ago. Users do not need to update the app; the new feature will show up automatically.

Engadget
Facebook starts turning on free voice calls for iPhone users in the US
iPhone Download Blog
Facebook begins rolling out free Messenger VoIP feature to the US
Phone Scoop
Facebook Enables Free VoIP Calling from iPhones
Other
Facebook Messenger Now Offers Free Phone Calls for U.S. iPhone Users
BGR
Facebook Messenger app brings free voice calling to U.S. iPhone users
Electronista
Facebook extends Messenger voice calls to US
 
More...