Samsung SCHU520 User Manual page 215

it is turned on. With the phone in lock mode, you can
answer incoming calls, but you must unlock the phone
to place outgoing calls (except to emergency and secret
numbers).
1. In standby mode, press the Menu (left) soft key (
then press
Settings), and
enter the lock code.
Note: The default lock code is the last four digits of your telephone
number.
2. Press
@
Mode options appear in the display:
Lock — Locks the phone immediately (The phone stays
locked until you enter the lock code.)
Unlock — Unlocks the phone
(for Settings), and
for Security. You're prompted to
for Lock Phone. The following Device Lock
)
)
Section 13: Changing Your Settings
Phone Settings
),
(for Phone
215