Facebook is updating its Messenger app to allow users to make free Internet calls from their smartphones.

Canadian Facebook users will be helping the social media giant with the Messenger upgrades, which will eventually enable short voice messages and Voice over IP calls on iPhones and Android-powered smartphones.

Apple iPhone users living in Canada, have already began testing the app to make phone calls simply by tapping the "i" button on the top right corner of their mobiles, and selecting "Free Call."

The service uses Voice over Internet Protocol (VoIP) technology and the caller's existing data plan.

Additionally, Facebook Messenger users, on both iOS and Android platforms, are now able to record voicemail messages up to one minute in length to send to friends.

Facebook is apparently looking to rival Microsoft's Skype service and Google Voice.

Comscore reports that four of every five Internet users in Canada now has a Facebook account.

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