Home Button
Here it is: the one and only real button on the front of this phone. Push it to summon the Home screen, which is your gateway to everything the iPhone can do. (Details on the Home screen appear on The Home Screen.)
Having a Home button is a wonderful thing. It means you can never get lost. No matter how deeply you burrow into the iPhone software, no matter how far off track you find yourself, one push of the Home button takes you all the way back to the beginning.
Sounds simple, but remember that the iPhone doesn't have an actual Back button or End button. The Home button is the only way out of some screens.
In the iPhone 3.0 software, the Home button has become more saddled with functions than ever. It's become Apple's only way to provide shortcuts for common functions; that's what you get when you design a phone that only has one button. Some functions you trigger with two button presses; some by holding down the Home button for a moment. Here's the rundown.

One Quick Press: Wake Up
Pressing the Home button once wakes the phone if it's in Standby mode. That's sometimes easier than finding the Sleep switch on the top edge.
Two Quick Presses: Search, Favorites, Camera, or iPod
If you press the Home button twice quickly, it can perform one of four other functions. To specify which of these four functions you prefer, see General; in the meantime, here are your options:
Search. Two ...
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