It is a testament to their build quality and longevity that these models have managed to las tthis long in the market, but as Ozymandias is wont to remind everyone, the passage of time does not treat anyone with favoritism. The most recent earnings report from BlackBerry shows that nothing, not even diamonds, are forever, as BlackBerry 7 sales have dropped by 50% year-over-year to 2.3 million units, which happens to be double that of BlackBerry 10 sales.
Despite that, the figure quoted does not make it enough to help the company remain in the black, which is the most important thing when your company is in trouble. CEO John Chen would not have been surprised at the way things are at the moment, since he intends to rebuild the BlackBerry brand within the shortest time possible, and will continue to support BlackBerry 7 devices as long as demand remains. [Press Release]