IPHONE 3G vs IPHONE 3GS

Different :

1. price

- iPhone 3G 8GB start at $99

- iPhone 3GS 16 GB start at $199 ,32GB start at $299.

2. CPU speed

- iPhone 3G 412 MHz ARM11

- iPhone 3GS 600 MHz (ARM Cortex A8)

3. Camera

- 2M pixel

- 3M pixel + Macro + auto focus + auto white balance

4. Video

- Can't record.

- 30 fps VGA

ref : http://www.engadget.com/2009/06/08/iphone-3g-vs-iphone-3g-s-the-tale-of-the-tape/