Samsung SGH-X507HBACIN - Manual (Page 27)

Section 2: Understanding Your Phone 23
Command Keys
Section 2
Keys . To set the shortcut key functions see “Using
Shortcuts” on page 39.
Speakerphone Key
During a call, use the speakerphone key in conjunction
with the left soft key
to activate the speakerphone
operation. Use the volume keys (located on the left side of
your phone) to adjust the volume.