These days, it is not surprise to see that more and more people on public are using iPhone, either iPhone 3GS or iPhone 4, they are both the products from Apple. During the Apple Worldwide Developers Conference Keynote Address 2010, iPhone 4 was introducted by Steve Jobs, it is the fourth generation Internet and multimedia-enabled smartphone from Apple more powerful than iPhone 3GS.

A great feature about iPhone 4 is that it is 24% thinner than iPhone 3GS with larger MegaPixels front & back built-in flash cameras.

Other cool new features in iPhone 4 are second microphone for noise cancellation, front-facing camera for “FaceTime” video calling, 3 axis gyro (more motion gestures for better gaming), stainless steel band (acts as an antenna, creates more internal space), new iOS 4 operating system allows for multitasking, more RAM memory and 40% more long lasting battery.

If you would like to know the differences between iPhone 3GS and iPhone 4, what’s new about iPhone 4, then you should check out the infographic below by iPhone team at Mahalo which provides you some major details of these two iPhones.