Viber 4.0 for Windows Phone is now available as a free download. Viber Out was launched on Viber for Android, iPhone and desktop, with the company saying Windows Phone users will receive the feature at a later date. In December, Viber announced the launch of Viber Out, a service that lets Viber users call any mobile or landline number across the world for a fee. However, there's no sign of Viber Out on the Windows Phone app yet.

The app version makes a jump from 6.5.1 to 6.6. Currently, you can only attach one photo and send for the PC version. The app also includes other general improvements, including changes that make resuming and loading the app much faster. You can attach one or more photos and send at the same time. The update also brings the Viber sticker market to Windows Phone. There's good news for Emoji fans, with Viber 4.0 for Windows Phone bringing Emoji to emoticon translation to ensure cross platform compatibility. Viber is one of the most popular, cross-platform VoIP client with over 300 million users who use the service to talk to their loved ones. Also included are new Viber notification sounds that can be used for incoming push notifications. The app brings an enhanced notification system with users getting the ability to hide notification content, if needed. Photo handling has been improved to include the ability to add description to photos and improved quality of photo thumbnails in conversation. Viber 4.0 for Windows Phone adds 'Seen' status that lets users know their messages have been viewed, and a 'Last online' timestamp that lets users know when contacts were last seen on Viber.

Popular messaging platform Viber has updated its Windows Phone app to bring new features and performance improvements.

Viber for windows phone update