There was a post on Mac Rumors that a developer has activated an On/Off option that enables 3G speeds on the latest iPhone 2.0 Beta 5 distributed to developers. Evidently the preference is hidden and will not work on current iPhones … so dig deep for that new iPhone that is coming …. but be aware that enabling the option will most likely dramatically increase power consumption. I guess that is why there is the On/Off option so you can fall back to EDGE. Too bad there is not a bigger battery or better still, a user replaceable battery.
via iPhone Alley