Samsung SGH-X426ZSAAWS - Manual (Page 27)

Call Functions 23
Adjusting the Volume
To adjust the earpiece volume during a call, press the
key to increase the volume level and the key to
decrease the level as shown:
In Idle mode, use these keys to adjust the keypad tone
volume.
Answering a Call
When you receive a call, the phone rings and displays the
incoming call animation.
When the caller can be identified, the phone displays the
caller ID information. If the caller is stored in your
Phonebook, the callers name also displays.