I have no idea if Amazon would come out with a Smart Phone. It sounds like a risky plan to me, since I can't really see a phone being tied back well to the Amazon ecosystem of movies, books, magazines, etc. Really, who likes to read on a phone!
The videos on THIS PAGE are good, because I like learning a bit more about how Amazon was founded, how it grew, and what their plans are for the future.
Fallon and Bezos talk about, briefly, BLUE ORIGIN, a spacecraft company founded by the Amazon billionaire. Bezos of course is not the only game in town when it comes to spaceflight being performed by private companies. The space tourism company, VIRGIN GALACTIC, is getting much closer to actual launch.
The future should be interesting :)