The iPhone is a line of smartphones designed and marketed by Apple Inc.. First released in 2007, it combines a mobile phone, an iPod, and an internet communication device. The iPhone runs on the iOS operating system and features a touchscreen interface, allowing users to interact with apps and services easily. Over the years, the iPhone has undergone numerous updates and redesigns, introducing advanced features like high-quality cameras, facial recognition, and improved battery life. It has become one of the most popular smartphones globally, influencing the design and functionality of mobile devices across the industry.