The iPhone is a line of smartphones developed and marketed by Apple that run iOS, the company's own mobile operating system. The first-generation iPhone was announced by then–Apple CEO and co-founder Steve Jobs on January 9, 2007, at Macworld 2007, and first launched in June 2007. Since then, Apple has annually released new iPhone models and iOS versions; the current lineup consists of the iPhone 17, the lower-end iPhone 17e, the lighter and thinner iPhone Air, the higher-end iPhone 18 Pro and Pro Max, and the foldable iPhone Duo. As of July 2025, more than 3 billion iPhones have been sold. Apple has been the largest vendor of mobile phones since 2023.