Expert Reviews
iPhone 4 is a touchscreen slate smartphone developed by Apple. It is the fourth generation of iPhone & successor to the iPhone 3GS. It is particularly marketed for video calling, consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail access. It was announced on June 7, 2010, at the WWDC 2010 held at the Moscone Center, San Francisco,[7] and was released on June 24, 2010 in the United States, the United Kingdom, France, Germany and Japan.