Portable computing devices include laptops, PDAs, and iPhones. Laptops are small enough to use on one's lap and have the same components as desktops. PDAs are handheld devices also known as palmtop computers that now have phone capabilities. iPhones are smartphones designed by Apple with a multi-touch screen that functions as a camera phone, media player, and provides internet access. Portable computing allows users to access documents and stay connected to their network while mobile. It provides gaming capabilities and allows common users to check email and messages on the go.