The screen size remains the same, the quality of the display however couldn't be more different.Apple has developed something they call the Retina Display for the iPhone 4. Basically they took the...
It is the 4th model of iPhone. But iPhone generations do not go from one up: 1. iPhone 2. iPhone 3G (because of 3G connection) 3. iPhone 3GS 4. iPhone 4. 5. iPhone 4S