I've quickly become a fan of the burgeoning "True Corporate" genre (as opposed to True Crime). Between this film, Tetris, and Air, I consider the genre three for three this year. I'm sure the films aren't for everyone, but having worked most of my career at the intersection of legal and finance/accounting, I find the stories fascinating. The case of BlackBerry is even more so given that it took place within my lifetime. Being able to map the events in the film against my own recollection of BlackBerry's prevalence definitely adds something. Combine that with solid writing and fantastic performances from both Jay Baruchel and Glenn Howerton and the end result is an easy recommend.
As a tiny little nitpick, I think "save the cat" moment of Mike fixing the buzzing intercom in the opening scene was a bit cliché and ultimately unnecessary. I think the theme/message would have been equally (if not more) effective had he just identified the buzz, given the same commentary about it, maybe even opened it up and tried to fix it, but not actually fixed it. It's just a bit of an eye roll, because I don't buy that thirty seconds and a paper clip is enough to fix much of anything. But I'm not an electrical engineer, so maybe I'm totally off base. In any case, not a big deal, and ultimately the scene works just fine as is, but I would have tweaked it.