Samsung has just announced the Galaxy S III and we are going to compare it against the Samsung Galaxy S II, let’s have a look how much Samsung has worked on this device and how much improved this device is than Samsung Galaxy S II, this is just a specs war.

Samsung Galaxy S IIISamsung Galaxy S II
Display4.8inch HD Super AMOLED (1280x720) display4.3-inch Super AMOLED Plus (480 x 800) display
Operating SystemAndroid ICSAndroid Gingerbread upgradable to Android ICS
CameraRear: 8 Megapixel
Front: 1.9 Megapixel		Rear: 8 Megapixel
Front: 2 Megapixel
ProcessorQuad-CoreDual-Core
ConnectivityBluetooth,Wi-Fi,NFC,3G,4G,USB port and 3.5mm AV jackBluetooth,Wi-Fi,NFC(optional),3G,4G,USB port and 3.5mm AV jack
ColorsBlue and WhiteBlack and White
RAM1GB1GB
Internal Storage8GB/16GB.64GB(coming soon)8GB/16GB
Battery2100 mAh1650 mAh
Additional
Features		Direct call, Smart alert, Tap to top, Camera quick access
Pop up play
S Voice
Burst shot & Best photo, Recording snapshot, HDR		None
External storageUpto 64GBUpto 32GB
Dimesnions136.6 x 70.6 x 8.6 mm125.3 x 66.1 x 8.5 mm
Weight133gm116gm
Thickness8.6mm8.5mm

Hope that it helps you to find the difference in a simple way.