Viber launched on the Windows Phone platform in the “Nokia Collection” of apps way back in September with Viber HD. The application did indeed originally incorporate VoIP functionality, but was subsequently pulled from the Windows Phone Store due to various bugs and performance issues. Currently, only the official Viber Messenger app is available, but it does not include VoIP functionality.
We asked Viber about the possibility of the voice-powered version of the app returning to the Windows Phone scene. Viber was not able to provide any specifics, but did say that the app incorporating VoIP functionality was indeed “coming very soon” and that they will be announcing its “publication, system requirements, and more” shortly. The company did confirm that it would be available for “WP8 Lumia” users, but did not clarify if it would be available beyond the Nokia WP8 devices.
We will post any new information as soon as we receive it.