The iPhone is a line of Internet and multimedia-enabled Smartphone designed and marketed by Apple Inc. The first iPhone was introduced on January 9, 2007; the Apple iPhone sets a new benchmark for an integrated cell phone and MP3 player. The Apple iPhone has a stunning display, a sleek design, and an innovative multitouch user interface, Its Safari browser makes for a superb Web surfing experience, and it offers easy-to-use apps. As an iPod, it shines.
From one generation to another certain features have remained the same but the upgrade of the device is has always been beyond great. Despite the fact that they keep us guessing and biting our nails asking ourselves when is next release, the iPhone has revolutionized the mobile industry.
There have been four generations of iPhone hardware, and they have been accompanied by four major releases of iOS (formerly iPhone OS). The original iPhone established design precedents like screen size and button placement that have persisted through all models. The iPhone 3G brought 3G cellular network capabilities and A-GPS location. The iPhone 3GS brought a compass, faster processor, and higher resolution camera, including video.
The iPhone 4 has two cameras for FaceTime video calling and higher resolution display. It was released on June 24, 2010 in certain countries and is in the process of being released worldwide.
The iPhone 4 is the first device to support FaceTime, an embedded video conferencing application that is able to use either the front or back camera over a Wi-Fi connection to communicate with another iPhone 4.