Sanyo SPRINT PCS VISION SCP-2400 User Manual page 48

Changing the Ringer Volume
To change the ringer volume, press the Side Volume key when
the phone is open and in standby mode.
Note:
To change the ringer volume from the main menu, see "Adjusting the
Phone's Volume Settings"on page 55.
Adjusting Volume During a Conversation
When you need to adjust the receiver volume during a
conversation, use the Side Volume key, or press the navigation
key up or down while a call is in progress.
Muting a Call
There are times when it's necessary to mute a call so that your
caller does not hear you or certain background noises.
To mute a call:
Press Options (right softkey) > select Mute. (When the
phone is muted, "Muted"appears on the display.)
To unmute a call:
Press Options (right softkey) > select Unmute.
Tip:
To use this feature with the flip closed, press and hold the Side Volume
key down.
32 Section 2A: Your Phone – The Basics