Lock phone – Samsung SCH-A645BKAATL User Manual
Page 172
 
Sect
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Lock Phone
Locking the phone limits all outgoing calls except calls 
to 911 emergency and the three user-programmable 
emergency numbers. You can lock the phone manually 
during use, or set the phone to lock automatically when 
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
(for Settings) and
for Security.
You’re prompted to enter the lock code.
Note: The default lock code is the last four digits of your telephone number.
2. Press
for
Lock Phone. The following options appear
in the display:
ⅷ
Never — The phone remains unlocked.
ⅷ
On power up — The phone locks automatically the next time 
your phone is powered ON and stays locked until you enter the 
lock code. 
ⅷ
Now — The phone locks immediately and stays locked until 
you enter the locked code. 
3. Use the navigation keys to highlight the Lock Phone
option of your choice.
4. Press the
key to perform the function for the
highlighted option.
OK