Facebook was testing free phone calls via its iPhone messenger app in Canadian. I guess the test went well because it has updated its Messenger application to allow users to make free calls over a Wi-Fi or cellular data connection in the US too. You can make a free call by selecting a friend’s name in the Facebook Messenger app, then tapping the “i” button and choosing the “Make free call” option. It will go head to head with Google Voice and Microsoft Skype. The VoIP services by the other two have a head start but Facebook has the users to take them on. Could this be the start of the Facebook Phone? Full test soon.