“Blackberry” (**1/2 out of four) was an intermittently interesting melodrama about the revolutionary development of the world’s first smartphone when the engineering geeks Mike Lazaridis (Jay Baruchel) and Douglas Fregin (Matt Johnson) joined forces with hotheaded multimillionaire Jim Basillie (Glenn Howerton) which resulted in a meteoric rise on the cusp of the technology boom and a catastrophic crash over the next decade. Uneven and doesn’t have the sustained sweep that a film like this needs as it’s held back by a certain aloofness but still holds you in its feverish grip as it takes you through one of the most important technological inventions of its time. Howerton’s powerhouse performance as Basillie makes this overall worthwhile.