Facebook has been rolling out many features for its users in order to make its services more user-friendly and advanced. Walking on the same path, the social network giant launched an update for its Messenger app for iOS users.

The update allows users to speak to other users and send short voice messages. However, no video calling feature is added.

For now, the update is in beta stage and available only in Canada.

With the new version of the Messenger app, users will be able make a call by opening a conversation with the person they want to call, hitting the 'i' button in the top-right corner and selecting 'Free Call.' To send and receive calls, users will need to have the latest version of the app.

The Facebook Messenger app's version 2.1 is available in the App Store for free. The app is compatible with iPhone, iPod touch, and iPad, and requires iOS 4.3 or later.

If the social network giant becomes successful with its experiment in Canada, the update will soon be rolled out to Android and iOS users in rest of the world.

Though only Canadian iOS users are benefitted with the real-time voice calling from Facebook, other users across the world have also got something to cheer about.

Facebook also released a minor update for iOS and Android users in other parts of the world allowing them to send short voice messages.

To use the feature, you just have to open the Messenger app and begin composing a message. Click the plus sign to the left of the text part and then click 'Record Voice.' Hold the red button to record your message, release it once you are done. The recorded clip will be dispatched immediately. Sliding your finger off the button will cancel the message.

The latest move from Facebook is to catch hold of more and more mobile users. However, it has to be very careful while launching the service for everybody keeping its history of technical glitches with new features like Poke, Timeline, and others.