iPhone

The iPhone is a smartphone produced by Apple that uses the iOS mobile operating system, with over 2.2 billion units sold as of November 1, 2018. It was the first mobile phone to use multi-touch technology and has since gained larger screen sizes, video-recording, waterproofing, and accessibility features. The iPhone has become one of the two largest smartphone platforms in the world, generating large profits for Apple and making it one of the world's most valuable publicly traded companies. The device was first announced by Steve Jobs on January 9, 2007, and was developed by a team of 1,000 employees led by Tony Fadell, Scott Forstall, and Jony Ive, with a development cost of $150 million over 30 months.learn more on wikipedia