Latest smartphone sales data is grim news for Windows Phone, BlackBerry Priv

http://www.extremetech.com/wp-content/uploads/2015/06/454774-windows-phone-10-640x360.jpg 640w, http://www.extremetech.com/wp-content/uploads/2015/06/454774-windows-phone-10-223x126.jpg 223w, http://www.extremetech.com/wp-content/uploads/2015/06/454774-windows-phone-10-348x196.jpg 348w, http://www.extremetech.com/wp-content/uploads/2015/06/454774-windows-phone-10.jpg 740w" sizes="(max-width: 300px) 100vw, 300px" />The latest smartphone sales reports are grim news for both Microsoft and BlackBerry. Sales of both company’s mobile products have fallen off a cliff, with sharp declines in purchasing