We are working on an in-depth review of the iPhone 3G, so stay tuned. In the mean time, here are some videos of the iPhone 3G running the Maps application, playback effects of the Photos application, changing default ringtones and wallpaper.
Here is a clip of the Maps application:
Here is the road test of the GPS and Maps application:
Here is a video of photo playback effects:
Here are the sound clips of the bundled ringtones, the same ringtones as those came on the previous iPhone: