User's Manual

Page 43
The current active call is placed on hold and the held call is
reactivated.
If you want to quit conference call and do not want to hang up
any call, you can choose [Split Call] Menu in [Call Menu]. [Split
Call] menu appears only when you are on a conference call.
Note:
Some networks do not allow the user to change this setting.
Sending Message
You can send messages by using the [SMS] Menu in
[Messages] even during you are calling.
Inter-working Phonebook
You can use [Phonebook] menu and sub menus even while you
are calling.