Facebook Inc. is working tirelessly towards making her social media more relevant day by day. You can re-call that Facebook partnered with Skype in the year 2011 for video calling inside Facebook website.
Now is introducing free calls for iPhone users, but only in the U.S presently. This huge step of Facebook with a single feature emerges as one of the largest communities of VoIP users in the world. This feature was rolled out last week, the 16th of January 2013.
Users in the U.S can now call other Facebook users for free over Wi-Fi or using their phone's data connection without carrier charges.
We hope Facebook launches versions that supports other applications like Android soon