Actually I wasn't expecting such kind of experience from 3GS. TBH I was very shocked like :O
It has just 600 MHz procy and 256MB ram. The hardware utilization is so great in iOS !!! No Android device can perform like that with similar specs.
ha, even after two years this device makes wonders ! If I had known this earlier then I would have bought 3GS only instead of iP4. Seriously !