Nokia 6681 User Manual page 93

number and the recipient's phone number must be
included on the fixed dialling list.
Options in the Fixed dialling
Activ. fixed dialling/Deact. fixed
Edit, Delete, Add to Contacts,
Find, Mark/Unmark, Help, and Exit.
Note: When security features that restrict calls are
in use (such as Call barring,
Fixed dialling) calls still may be possible to the official
emergency numbers programmed into your phone.
Closed user group (network service)—You can specify a
group of people to whom you can call and who can call
you.
Confirm SIM services (network service)—You can set the
phone to display confirmation messages when you are
using a SIM card service.
Glossary of PIN and lock codes
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 PIN
code is blocked, and you need to unblock it before you can
use the SIM card again. See the information about the PUK
code in this section.
view are Open, Call,
dialling, New contact,
Add from Contacts,
Closed user group, and
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. The UPIN code
protects the USIM card against unauthorised use.
PIN2 code—This code (4 to 8 digits) is supplied with some
SIM cards, and is required to access some functions in
your phone.
Lock code—This code (5 digits) can be used to lock the
phone to avoid unauthorised use. The factory setting for
the lock code is 12345. To avoid unauthorised use of your
phone, change the lock code. Keep the new code secret
and in a safe place separate from your phone.
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 phone.
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 phone.
Wallet code—This code is required to use the wallet
services. See 'Wallet', p. 70.
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