Chapter 1. The Guided Tour
If you'd never seen all the videos and photos of the iPhone, and you found it lying on someone's desk, you might not guess that it's a phone (let alone an iPod/Web browser/alarm clock/stopwatch/voice recorder/musical instrument). You can't see any antenna, mouthpiece, or earpiece—and, goodness knows, there are no number keys for dialing.
It's all there, though, hidden inside this sleek black and silver slab.

For the rest of this book, and for the rest of your life with the iPhone, you'll be expected to know what's meant by, for example, "the Home button" and "the Sleep/Wake switch." A guided tour, therefore, is in order. Keep hands and feet inside the tram at all times.
Sleep Switch (On/Off)
On the top right edge of the iPhone, you'll find a button shaped like a dash. It's silver metal on the iPhone 3G; it's black plastic on the original.

This, ladies and gents, is the Sleep switch. It has several functions:
Sleep/Wake. Tapping it once puts the iPhone to sleep—that is, into Standby mode, ready for incoming calls but consuming very little power. Tapping it again turns on the screen, so it's ready for action.
On/Off. This switch can also turn the iPhone off completely, so it consumes no power at all; incoming calls get dumped into voicemail. You might turn the iPhone ...
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