Once a dominant player in the handset market, BlackBerry has lost market share to rivals like Apple (iPhone), Google's Android-powered devices and now Nokia's Lumia range, which are powered with Microsoft's Windows phone OS.
The company about ten months back had launched its first touch phone Z10, which failed to live up to expectations.
According to research firm IDC, globally Windows Phone shipments have been surpassing BlackBerry for the first two quarters in 2013 calendar year.