Samsung SGH-I520 User Manual page 124

Note: When the phone is locked, you may be able to call the
emergency number programmed in your phone (e.g.,
112 or other official emergency numbers).
To unlock the phone, in Standby mode, press the Unlock
soft key, enter the lock code, and press the OK soft key.
• Lock code: You can change the lock code used to lock the
phone and keypad to avoid unauthorised use.
Note: The factory setting for the lock code is 00000000. To
avoid unauthorised use of your phone, change the lock
code.
• Lock if SIM card chan...: You can set your phone to ask
for the lock code when an unknown USIM/SIM card is
inserted into the phone. The phone maintains a list of
USIM/SIM cards that are recognised as the owner's cards.
• Closed user group (network service): You can specify a
group of people whom you can call and who can call you.
For more information, contact your service provider. Select
Default to activate the default group agreed on with the
service provider or On to use another group (you need to
know the group index number).
Note: When calls are limited to Closed user groups, calls may
be possible to certain emergency numbers in some
networks (e.g., 112 or other official emergency
numbers).
• Confirm SIM services (network service): You can set the
phone to display confirmation messages when you are
using a USIM/SIM card service.
Settings
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