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Call barring service — to restrict incoming calls to and outgoing calls
from your phone (network service). A password is required.
Fixed dialling — to restrict your outgoing calls to selected phone
numbers, if this function is supported by your SIM card
Closed user group — to specify a group of people whom you can call and
who can call you (network service)
Security level > Phone — The phone asks for the security code whenever
a new SIM card is inserted into the phone. Select Memory and the phone
asks for the security code when the SIM card’s memory is selected and
you want to change the memory in use.
Access codes — to set the PIN code or UPIN code in use, or to change the
security code, PIN code, UPIN code, PIN2 code, and call barring
password
Code in use — to select whether the PIN code or UPIN code should be
active
Authority certificates or User certificates — to view the list of the
authority or user certificates downloaded into your phone. See
“Certificates,” p. 102.
Security module settings — to view Security module details, activate
Module PIN request, or change the module PIN and signing PIN. See also
“Access codes,” p. 9.
■ Restore factory settings
To reset some of the menu settings to their original values, select
Menu > Settings > Restore factory sett., and enter the security code.
Data that you have entered or downloaded is not deleted. For example,
names and numbers in Contacts are not affected.
■ Phone software updates
You may initiate phone software updates from the Phone updates menu.
Also, your service provider may initiate the updates by sending them
over the air directly to your device. This function is known as firmware
over the air (FOTA).