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Viber, a VoIP service claiming more than 200 million users, marked its third birthday by releasing Viber 4.1 which includes the full global launch of Viber Out, a new feature that allows users to make low-cost calls to any mobile or landline phone number.

Viber Out enables all Viber users to call anyone worldwide on Android, iPhone and Desktop, coming to Windows Phone in the future. Purchasing credit for Viber Out can be completed either through a simple in-app purchase via either the Google Play Store or the Apple App Store or using a credit card via Viber Desktop.

Additionally, Viber Out claimed that it has lower price-per-call than other competing services due to lower per minute rates and the omission of connection fees.

Unlike competing services, Viber Out displays caller’s real phone number to the recipient so he or she knows who is calling. Further, Viber Out on Desktop has an address book so users don’t have to remember numbers or dial them manually.

Viber Out joins the Viber Sticker Market as the app’s second paid feature. As part of this release, Viber added new stickers and will continue to add more content. Viber also released a new promotional video highlighting one of its signature characters – Violet.

Microsoft’s Skype, a major rival of Viber, recently terminated its cooperation with its Chinese operator Tom Online and partnered up with Guangming Fangzheng to run business in China.

image credit: Viber