A teardown of the Galaxy Note 7 may have provided insight into why the infamous smartphone was prone to explosions, causing Samsung to recall and eventually cancel the device entirely. While it’s obvious the battery was a key reason for the device’s failure, a damning new report from a third-party shows what may be the underlying cause.After acquiring a Galaxy Note 7 — no easy feat once the phones were recalled — engineers with manufacturing technology company Instrumental stripped the phone down to see what was going on inside (and yes, they had a fire extinguisher nearby, just in case). They discovered...