This Day in History:, Steve Jobs br Debuts the iPhone.br January 9, 2007.br Dressed in his jeans and black turtleneck, br the Apple CEO unveiled the iPhone atbr the Macworld convention in San Francisco.br Jobs called the iPhone a br “revolutionary and magical product that is br literally five years ahead of any other mobile phone.”.br Originally available in a 4GB, $499 model br and an 8GB, $599 model, 'Time' magazine br named it the invention of the year.br When it went on sale in June, br thousands of customers lined up br at Apple stores across the country br to be among the first to buy it.br The iPhone helped turn br Apple into one of the planet’s br most valuable corporations.