The Apple iPhone series is a line of smartphones designed and marketed by Apple Inc.. First launched in 2007, the iPhone has evolved through multiple generations, incorporating advanced technology and features such as high-resolution cameras, powerful processors, and user-friendly interfaces. Each new model typically introduces improvements in performance, battery life, and software capabilities. The iPhone runs on the iOS operating system, which offers a wide range of applications through the App Store. The series includes various models, such as the iPhone SE for budget-conscious users and the iPhone Pro for those seeking premium features. The iPhone remains one of the most popular smartphones worldwide.