Viber, the popular cross-platform instant messaging and VoIP app which was recently acquired by Rakuten, has today launched the new Viber Out Calling features for Windows Phone 8 devices. The Viber Out Calling feature allows users to call any number, whether it’s a mobile or a landline, to any non-Viber users with the price varied based on the country you are calling.

Basically, Viber Out is a service that enables user call any number at low rates. The Viber Out update brings new features, including sending video messages, multiple photos at once and hands-free bluetooth support. As far as the other popular platforms are concerned such as Android and iOS, this feature is already available and Windows Phone 8 is the latest to receive this update. Stay tuned for more updates.