Smartphones are a part of daily life, whether you own one yet or have to borrow one to get in touch with friends and family. These amazing devices allow users to make calls, take photographs and videos, check email, play games, and much more, thanks to apps, but how do smartphones work? Readers will learn much about these pocket-size computers that revolutionized communication in the short time they've been developed. Fascinating sidebars and helpful graphic organizers aid in understanding key STEM concepts while bright photographs complement the accessible, well-researched text.