Samsung A847M - Manual (Page 35)

Call Functions 28
Silent Mode
Silent mode is convenient when you want to stop the phone from making noise, in a theater for example.
In Idle mode, press and hold the
key until the phone vibrates, the Silent Profile on message, the Silent
mode icon displays on the screen. For more information, refer to “Sound Profile” on page 93.
In Silent mode, your phone’s speakers are muted. With the flip closed, an incoming call causes the phone to
vibrate and light up the external LCD display or just light the external LCD display, depending on the settings
of the Silent Phone Settings feature.
To exit and reactivate the previous sound settings, press and hold the
key again until Normal Profile on
displays. The Silent mode and Vibrate icons no longer display.