Simon Tian says he has in-hand a working prototype of something nearly unprecedented in consumer electronics: a smartphone the size of a watch. Not just a smart watch, but an actual, fully-featured smartphone running Google’s Android software that straps onto your wrist. Along with his team of nine at the Montreal, Quebec-based startup Neptune, he’ll be unveiling it in mid-April. Tian is only 18 years old—the founder and youngest member of Neptune.
