While the accelerometer that detects subtle changes in position or orientation of Apple’s iPhone 3G is astoundingly responsive — for instance, quickly resizing a Web page from a vertical layout to a horizontal view — there’s no built-in ability to change to a landscape mode when writing an e-mail message. Why is this a big deal? For starters, you can fit more text on a horizontal screen, making it easier to keep track of what you’re writing; furthermore, a widescreen mode permits a larger keyboard image, making it easier to hit keys while typing quickly.
