You don’t have to be a genius to use an iPhone 3G. But if you want to get the very most out of yours, put this savvy Portable Genius guide to work and start ramping up the pace. Want to e-mail attachments twice as fast? Talk and browse at the same time? Quickly locate the nearest coffee shop? Sync your iPhone 3G with multiple computers? You’ll find cool and useful Genius tips, full-color screenshots, and pages of easy-to-access shortcuts and tools that will save you loads of