The thickness of iPhone 4 is just 9.3 mm which is 24% thinner compared to iPhone 3GS making it ‘the world’s thinnest smartphone’ as the Apple CEO, Steve Jobs calls it.

iPhone 4 uses Retina Display screen with the 960 x 480 pixel which is 4 times larger than its predecessor.

iPhone 4 has better camera compared to iPhone 3GS, 5.0 MP compared to 3.2 MP before. Read more on iPhone 4…