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Settings
102
Lock if SIM card changed — You can set the device to ask
for the lock code when an unknown SIM card is inserted
into your device. The device maintains a list of SIM cards
that are recognised as the owner’s cards.
Closed user group — You can specify a group of people to
whom you can call and who can call you (network service).
When calls are limited to closed user groups, calls may be
possible to the official emergency number programmed
into your device.
Confirm SIM services — You can set the device to display
confirmation messages when you are using a SIM card
service (network service).
Glossary of PIN and lock codes
If you forget any of these codes, contact your service
provider.
Personal identification number (PIN) code — This code
protects your SIM card against unauthorised use. The PIN
code (4 to 8 digits) is usually supplied with the SIM card.
After three consecutive incorrect PIN code entries, the
code is blocked, and you need the PUK code to unblock it.
UPIN code — This code may be supplied with the USIM
card. The USIM card is an enhanced version of the SIM card
and is supported by UMTS mobile phones.
PIN2 code — This code (4 to 8 digits) is supplied with some
SIM cards, and is required to access some functions in your
device.
Lock code (also known as security code) — This code (5
digits) can be used to lock the device to avoid unauthorised
use. The factory setting for the lock code is 12345. To
avoid unauthorised use of your device, change the lock
code. Keep the new code secret and in a safe place
separate from your device. If you forget the code, contact
Nokia Care Center.
Personal unblocking key (PUK) code and PUK2 code —
These codes (8 digits) are required to change a blocked PIN
code or PIN2 code, respectively. If the codes are not
supplied with the SIM card, contact the operator whose
SIM card is in your device.
UPUK code — This code (8 digits) is required to change a
blocked UPIN code. If the code is not supplied with the
USIM card, contact the operator whose USIM card is in
your device.
Certificate management
Digital certificates do not guarantee safety; they are used
to verify the origin of software.
In the certificate management main view, you can see a
list of authority certificates that are stored in your device.
Press to see a list of personal certificates, if available.