a dash.
This button 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 (page
53). You might turn the iPhone off whenever you’re not going to use it for
a few days.
To turn the iPhone off , press the Sleep/Wake switch for three seconds.
The screen changes to say, “slide to power off .” Confi rm your decision by
placing a fi ngertip on the red right-pointing arrow and sliding to the
right. The device shuts off completely.
Headphone Simcard Sleep/wake button
if you change your mind about turning the iPhone off, tap the Cancel button, or
do nothing. if the iPhone decides that you’re not paying attention, it dismisses the
“slide to power off” screen automatically.
To turn the iPhone back on, press the switch again for a couple seconds.
The chromelike Apple logo appears as the phone boots up.
Answer call/Dump to voicemail. The upper-right switch has one more
function. When a call comes in, you can tap it once to silence the ringing
or vibrating. After four rings, the call goes to your voicemail.
You can also tap it twice to dump the call to voicemail immediately. (Of
course, because they didn’t hear four rings, iPhone veterans will know
that you’ve blown them off . Bruised egos may result. Welcome to the
new world of iPhone Etiquette.)
