Facebook updated its Messenger app for Android and iOS allowing users to send brief voice messages to their friends on the social networking site. It is a step toward competing with Skype and Google Voice.
Canadian iOS users can even make free calls using Wi-Fi or their cellular data connection with the freshened Messenger app. Usage does of course pull from consumers' monthly data allotment.
Currently U.S. users are limited to sending brief voice messages, but the calling feature offered to Canadian users could cross the border if all goes well according to The Verge.
Facebook's Messenger app is a separate app from the somewhat ubiquitous mobile Facebook app.
To send a voice message in Messenger, select a contact and touch the "+" button on the left of the text field. Select the record voice button. Hold your finger on the red record button and record your message. When you lift your finger from the record button the message is automatically sent. You can cancel though by sliding upward off the record button rather than lifting off of it.
Here is a decent video walk-through.