Pour one out for the BlackBerry, the former king of mobile. The company has announced that as of January 4th, classic devices running BlackBerry OS 7.1 or earlier, as well as OS 10, will lose key services. And by key, we mean absolutely crucial capabilities, like phone calls, texting, data and even emergency 9-1-1 access. You can also expect to have issues with Wi-Fi and apps like BlackBerry World and Desktop manager, Liliputing reports. January 4th will also mark the end for the PlayBook, the company's ill-fated tablet.