Here’s a good tip for you iPhone 3G users: 3G network coverage in many parts of North America is quite poor, even though coverage maps may indicate otherwise. While 3G is the big hype, especially since the release of Apple’s 3G handset came out, its deployment in the New World (and even some parts of Europe) isn’t sufficient to support largescale use of network intensive devices like the iPhone. So: If you’re finding really poor call quality, dropped calls and generally poor data performance on your iPhone 3G, go into Settings > General > Network and turn off 3G Networking. You may be surprised to see your bars jump up and your call quality increase. 3G may be a big deal someday in parts of the world other than Japan and California. But not today.