The document provides an overview of the iPhone line of smartphones designed and marketed by Apple Inc., detailing its features, capabilities, and market impact. It covers the evolution from the original iPhone launched in 2007 to the iPhone 6 and 6 Plus introduced in 2014, highlighting Apple's leading position in the mobile software distribution market with over one million available apps. Additionally, it includes information about Apple Inc.'s financials, product offerings, and competition in the tech industry.