The company says BlackBerry users make up the third-largest chunk of its user base, after iOS and Android phone owners.

Meanwhile, Viber boasts more than 175 million users worldwide. The Israeli startup also just launched a new application for Windows Phone 8 that supports free voice calls. It’s also worth noting that BlackBerry Messenger (BBM) was recently updated for devices running BlackBerry OS5, adding support for free voice calls over a WiFi connection, among other features.īut Viber says it differentiates from BBM because it lets users communicate for free, whether via voice calls or text messages, with users of all other Viber-supported platforms including iOS and Android. Viber says this is “due to inherent limitations” of the OS, which powers devices like the BlackBerry Bold 9650/9700/9780, BlackBerry Curve 9300/9330, BlackBerry Pearl 9100 and BlackBerry Torch 9800.Īlso not supported: BlackBerry 10, although I hear this may be the case when the final app gets rolled out in the near future.Įither way, Viber has earlier stated that adding support for voice calls to its BlackBerry app “represented a significant technical challenge”.

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