Think of a daily task, any daily task, and it's likely there's a specialized, pocket-sized device designed to help you accomplish it. Unfortunately, you only have so many pockets. A smartphone addresses this issue by handling pretty much everything on its own. It can make phone calls, keep your calendar and address book, entertain you, play your music, give directions, take pictures, check your e-mail, and do countless other things. Learn what makes a cell phone a smartphone, how the idea came about and what you can do with it with How Smartphones Work.