Nokia 6260 - Manual (Page 33)

33 Copyright © 2004 Nokia. All rights
The loudspeaker cannot be activated during a call when you have connected a
headset to the phone.
WARNING! Do not hold the device near your ear when the loudspeaker is
in use, because the volume may be extremely loud.
To turn off the loudspeaker when you have an active call, select
Options → Activate handset .