Defining Terms To ensure parents had a consistent basis for responding to questions  about different types of technology, the survey provided them with these  definitions and examples:  nMobile devices-wireless handheld devices that use Wi-Fi, 3G or 4G to  connect to the Internet, many of which use an operating system such as  iOS, Windows or Android, and can run various types of apps. Examples  include smartphones, tablets, e-readers, and the iPod Touch.  nPortable devices-laptops, notebooks, netbooks, ultrabooks

Many children are using many different devices-and using them often.  Even some pre-K children are using multiple devices. Smartphones are the  most commonly used mobile device; 43 percent of all children (pre-K-12),  and 60 percent of high school students, use a smartphone. One in three  children (34 percent) use tablets. Children use most devices daily or weekly,  with smartphones the most commonly and frequently used device.