The first iPhone was released by Apple on June 29, 2007. It was the first smartphone to use a multi-touch interface and was notable for its lack of a physical keyboard. The original iPhone was only available in the United States and was sold exclusively on the AT&T network.
Since its release, the iPhone has become one of the most popular and influential smartphones in the world, with over 1.7 billion units sold as of September 2021. Apple has released new models of the iPhone every year, with each new generation introducing new features and improvements.