Facebook is world's number 1 social networking website, now offers Facebook Messenger with Voice Messaging, VoIP calling facility for Canada to make it easier to call their friends of Facebook. This is said in a update by Facebook, and this tool will be available for iOS and Android Messenger App. It is first time in the history of Facebook that it allow users to make VoIP calls to their friends. It is however said by the Facebook that they are testing this application also for the International users of Facebook. This kind of VoIP calling is totally free by Facebook, however it will charge you as per your mobile data plan by the operator. The Canadian Facebook users can see VoIP option on their iOS devices with the icon of "i".