The iPhone 3G’s performance running iOS 4 and iPhone OS 3.1.3 is on video. Here are the results:
- Camera: Launch is 40% slower on iOS 4. Shoot is 54% slower on iOS 4.
- Settings: Launch is 125% slower on iOS 4.
- Safari: Loading the New York Times is 37% faster on iOS 4.
Some mention the calendar app and the maps app become completely useless on an iOS 4 iPhone 3G. For others the trick is to do a clean reinstall, which results in iOS 4 performance that is equally as fast as 3.1.3 on the iPhone 3G.