Apple iPhone 4S
The iPhone 4S exterior is similar to the iPhone 4, but the phone gets the A5 dual-core processor. Other 4S exclusives, is the Siri voice recognition system comes with iOS 5. There is also an upgraded 8-megapixel camera, the sensor gets an upgrade too with something called backlight illumination, and an image signal processor that enables face detection and 26 percent improved white balance.