Apple iPhone, which was announced by Steve Jobs, CEO of Apple, at Macworld on June 9th, 2007, went on sale in the United States on June 29th, 2007. It perfectly integrates innovative mobile phones, touchable widescreen iPod and breakthrough Internet communication devices with desktop-level email, web browsing, search and map functions. IPhone has introduced a brand-new user interface based on a large multi-touch display and leading new software, allowing users to control the iPhone with their fingers. IPhone has also ushered in a new era of cutting-edge functions of mobile device software, redefining the functions of mobile phones. At the beginning, there is a picture from Mashable that explains the development of iPhone in detail. It is clear at a glance: On June 29, 2007, Apple launched the iPhone. In September of that year, iPhone sales exceeded 1 10,000 units, and Apple's share price rose to 1.80 US dollars. Development In June 2008 1 1, Apple brought an upgraded product, iPhone 3G, to users. Three days later, the sales volume reached 1 10,000 units, and the number of products in the Apple App Store exceeded 3,000. Because of the economic crisis, Apple's share price fell to $90. On June 9, 2009/kloc-0, Apple brought a faster iPhone 3GS with the same price, and the sales record of/kloc-0 million units was broken again. This time, in just two days, Apple's share price reached the $200 mark, and there were 100000 items in the Apple App Store. On June 24th, 20 10, iPhone 4 appeared. 20 1 1 year 1 October -20 12 years1month, Apple developed the IPHONE4S after the iPhone 4.