Viber announces the availability of Viber for BlackBerry Beta and Windows Phone 7 Beta. Attracting more than 69 million registered iPhone and Android users in 17 months and growing by more than 200,000 new users a day, Viber is the fastest-growing mobile VoIP and messaging company.

Both Viber for BlackBerry Beta and Viber for Windows Phone 7 Beta initially offer Viber Messaging, allowing users to exchange text and high-quality photo messages and share locations with other Viber users. Viber seamlessly integrates with the devices’ interface, instantly identifying existing contacts who already have Viber installed so users do not need to go through a “friend request” process. The full release for both platforms, including Viber’s signature HD-quality free voice calling, will be released as soon as it meets Viber’s quality standards.

Each month, Viber users talk for more than 1 billion minutes and send more than 1 billion messages. Users choose to share their locations in approximately 10% of their messages. Viber users make more than 7 million calls every day and send more than 40 million messages daily worldwide, with the numbers steadily increasing.

Viber for BlackBerry Beta is available for all BlackBerry devices with OS 5 and above from BlackBerry App World or directly from Viber at www.viber.com/blackberry.

Viber for Windows Phone 7 Beta is available for all Windows Phone 7 devices via the Windows Phone Marketplace and from Viber at www.viber.com/wp7.