History is written by the victors. But where’s the fun in only hearing their side? To the losers belong the better stories. BlackBerry, a low-budget, high-energy docudrama, covers the lifespan of the pioneering smartphone for which it’s named, from creation to extinction. Once the dominant product of its kind on the market, the BlackBerry quickly became a footnote, completely wiped out by the competition. That makes the film about it a sort of rejoinder to the Silicon Valley creation myths of the late-20th century: It captures the dawn of the Internet Age through the lens of a company that helped usher it in, before being left behind.