also there are two major differences in this phone. one is the 3.15Mp camera. previous iphone had a 2.0Mp camera and this also allows 30fps video recording. next one is iphone 3G s has a TV out. the GPS navigator is also similar to the previous phone but iphone 3G S has a digital compass.
specifications
- Multi-touch input method
- Accelerometer sensor for auto-rotate
- Proximity sensor for auto turn-off
- Scratch-resistant surface
- Ambient light sensor
- Digital compass
- Google Maps
- Audio/video player
- TV-out
- Voice command/dial