answer:Ow. My eyes. The mistakes. They burn! — The original iPhone (just called iPhone) was on the old 2.5 Generation cellular network. The new iPhone 3G (called iPhone 3G) works on the newer 3rd Generation cellular networks. So it’s able to download data faster. The new iPhone 3G also has built-in GPS, better sound quality, yadda yadda yadda. Both the old iPhone and the new iPhone 3G will benefit from the new iPhone 2.0 operating system, set to be released around July 11. That will also enable 3rd parties to write and release applications that you can download to run on your iPhone (or iPhone 3G).