The main differences between the new Apple iPhone 3G from the previous model is to support third generation cellular networks of three bands: 850/1900/2100 MHz, built-in hardware GPS-receiver and increased battery capacity. Support for high-speed HSDPA protocol further extends the functionality of Apple iPhone 3G. GPS-module of the phone uses A-GPS (Assisted GPS). Large touch screen with Multi-Touch technology allows you to manage this miracle of technology using only your fingers. Multi-Touch - is a convenient screen and keyboard, and the ability to scroll through photos and web pages and documents, and increase or decrease in size. Also, Apple iPhone 3G has an accelerometer. Thanks to this device iPhone is able to capture motion and can, for example, is to change the screen orientation from vertical to horizontal. Or you can use the accelerometer to control games.