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Security
Select Phone and SIM card, Certificate management, or
Security module.
Phone and SIM card
You can change the following codes: lock code, (U)PIN
code, and PIN2 code. These codes can only include the
numbers from 0 to 9.
Avoid using access codes similar to emergency numbers to
prevent accidental dialing of the emergency number.
Code in use—to select the active code, PIN or UPIN, for
the active USIM. This is shown only if the active USIM
supports UPIN, and the UPIN is not rejected.
PIN code request or UPIN code request—to set the phone
to request the code each time the phone is switched on.
Some SIM cards may not allow the PIN code request to be
turned Off. If you select Code in use > UPIN, UPIN code
request is shown instead.
PIN code or UPIN code, PIN2 code, and Lock code—to
change the codes
Keypad autolock period > User defined—to automatically
lock the keypad after a defined period of inactivity
Phone autolock period—to set a time-out after which the
phone is automatically locked. To use the phone again,
you need to enter the correct lock code. To turn off the
autolock period, select None.
Lock if SIM card changed—to set the phone to prompt for
the lock code when an unknown, new SIM card is inserted
into your phone. The phone keeps a list of SIM cards that
are recognized as the owner cards.
Closed user group (network service)—to specify a group of
people whom you can call and who can call you. For more
information, contact your service provider. To activate the
default group agreed on with the service provider, select
Default. If you want to use another group (you need to
know the group index number), select On.
When calls are limited to closed user groups, calls may be
possible to the official emergency number programmed
into your device.
Confirm SIM services (network service)—to set the phone
to display confirmation messages when you use a SIM card
service
Certificate management
A list of authority certificates that have been stored in your
phone is displayed in Certificate management. To see a
list of personal certificates if available, scroll right.
Digital certificates should be used if you want to connect
to an online bank or another site or remote server for
actions that involve transferring confidential information.
They should also be used if you want to reduce the risk of
viruses or other malicious software and be sure of the
authenticity of software when downloading and installing
software.