Here in Denver, Colorado I get much better reception with 3G turned off. Also the iPhone 3G does a very poor job of switching to Edge when the 3G signal is weak. So I have been leaving my 3G turned off until AT&T and/or Apple figure out a better switching method. Plus I am getting much better life. I really only care about 3G when I am browsing which is not that often. Being able to receive a call and stay connected during a call is much more important. I was speaking to an AT&T tech and he was telling me that in Denver the wireless network was built out originally for Edge (lower freq) and not for 3G. When they put in the 3G equipment they of course had to use the existing Edge towers which are not properly spaced for 3G and that is part of reason that the 3G coverage has dead spots. Getting local zoning boards to approve new towers is very difficult so that's why they just used the existing ones.