Seems, iPhone 3G gets the last place in most of the comparisons.
Info;
All three iPhones runs iPhone OS 3.0. First generation iPhone is quite old. But the iPhone 3G in this test has been bought January 2nd 2009, and 3GS is bought on June 19th 2009. As you can see 3GS finds much more WiFi spots according to first generation iPhone and iPhone 3G. First Generation iPhone and iPhone 3G finds same amount of WiFi spots but then after a while iPhone 3G drops one of them. and yet again another victory for the first generation iPhone imho.
