Simon was the first smartphone. Twenty years ago, it envisioned our app-happy mobile lives, squeezing the features of a cell phone, pager, fax machine, and computer into an 18-ounce black brick. The touchscreen (monochrome) had icons you tapped, or poked with a stylus, for e-mail, calculator, calendar, clock, and a game called Scramble in which you moved squares around the screen until you formed a picture. It featured predictive typing that would guess the next characters as you pecked. And it had apps, or at least a way to deliver more features—including a camera, maps, and music—by plugging a memory card into the phone.