iPhone: The Missing Manual, 2nd Edition

Silencer Switch, Volume Keys

Praise be to the gods of technology—this phone has a silencer switch!

This little flipper, on the left edge at the top, means that no ringer or alert sound will humiliate you in a meeting, a movie, or church. When you move the switch toward the front of the iPhone, the ringer is on. When you push it toward the back, exposing the orange dot, the ringer is off.

Tip

Even when silenced, the iPhone still makes noise if you've set an alarm, as described on Stopwatch.

Also, the phone still vibrates when the silencer is engaged, although you can turn this feature off; see Carrier.

No menus, no holding down keys, just instant silence. All cellphones should have this feature.

Tip

With practice, you can learn to tell if the ringer is on while the iPhone is still in your pocket. That's because when the ringer is on, the switch falls in a straight line with the volume keys. By swiping your thumb across these controls from front to back, you can feel whether the silencer switch is lined up or tilted away.

Below the silencer, still on the left edge, is the volume control—an up/down rocker switch. It works three different ways:

• On a call, these buttons adjust the speaker or earbud volume.

• When you're listening to music, they adjust the playback volume.

• At all other times, they adjust the volume of sound effects like the ringer and alarms.

Either way, a corresponding volume graphic appears on the screen to show you where you are on the volume scale.