3g (with wifi the phone is just out of the world). 5)Youtube works flawlessly. 6)The Apple store with all of its free apps. 7)easy settings 8)Text messaging with the iphone is the best iv'e seen.
Apple keeps you informed about updates to improve ... The browser is the best. I have had the 3G iPhone for 2 months and had the 2G iPhone for 6 months. There is a clear speed difference.