Most people today have cell phones. People rely on cell phones for communication. Cell phones also store a lot of personal data. This book explores how people can protect this data. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.