There are major differences between the Apple iPhone 3G and the Apple iPhone 3GS the most talked about feature to date is the inclusion of the AAR 11 600 MHz processor in the iPhone 3GS versus the 412 MHz ARM 11 processor in the iPhone 3G. Additionally the 3GS supports OpenGL ES 2.0 whereas the iPhone 3G only supports OpenGL yes 1.1. In terms of wireless technologies the iPhone 3GS really shines in its support for 7.2 Mb space HSDPA WiFi and Bluetooth 2.1. On the other hand the iPhone 3G currently supports 3.6 Mb based HSDP a and WiFi. Apple also responds to calls for a new more durable finish on the screen with three GS they responded with a water and oil resistant finish. Space in terms of navigation or three GS really shines as it has an integrated magnetic compass which allows for live by the second updates of your bearing and direction.