By the end of 2016, WhatsApp will no longer work on most BlackBerry devices, even those loaded with the company's latest mobile platform. In the blog post the WhatsApp team published today, they reminisced about their launch back in 2009, when most smartphones were either a BlackBerry or a Nokia. It was a different time, and the Facebook-owned app's developers have to cut them off, because the platforms "don't offer the kind of capabilities [they] need to expand [their] app's features in the future."