It looks like Google's modular Project Ara smartphone has some fresh competition. Circular Devices has been working on the Puzzlephone, a simpler take on Android phones that you can upgrade yourself. Instead of letting you replace things piece-by-piece, it divides parts into "the Brain" (core electronics and camera), "the Heart" (battery and secondary tech) and "the Spine" (LCD, speakers and basic shape). It's not as flexible as Ara, but it promises a sleeker design that still includes real futureproofing; you can swap in a new module when you want a faster processor, a fresh battery or new features. The goal is to have a base phone that can last for 10 years, rather than two or three.