Press the Home button anytime to return to the Home screen. Even while you’re on a call, you can access your email, calendar, or other applications, and even surf the web when you’re connected via Wi-Fi or 3G. Double-click the Home button to go to phone Favorites. Double-click in sleep mode to bring up iPod controls.
Press and hold the Home button until the Voice Control screen appears and you hear a beep. Then use the commands described below to make calls or play songs.
You can also press and hold the center button on the iPhone headset to bring up Voice Control.
Tap any application icon to get started.