The first iPhone in Apple’s portfolio hit the market on June 29, 2007. In the last four years, during which the company has made several sales records for the following phone models iPhone was the cornerstone for the development of the smartphone market after its presentation more mobile users around the world looking for smartphonesto replace the old. Smartphones before iPhone was much more awkward to use, but since Steve Jobs and company demonstrated their version of smartphone manufacturers started to develop new platforms and interfaces that are much more intuitive and easy to use.
Four years and four models later, waiting for Apple to present the fifth generation of the iPhone, we can say that the phone has become thin – 11.6 millimeters from the first iPhone to 9.3 mm in the iPhone 4. The camera of the first iPhone was 2 MP, while iPhone 4 boasts a full 5 MP. Apart Apple does not cease to change iOS, adding new and more relevant services.