Security
Phone and SIM
PIN code request
—When active, the code is requested
each time the phone is switched on. Deactivating the
personal identification number (PIN) code request may not
be allowed by some SIM cards. See "Glossary of PIN and
lock codes," p. 92.
PIN code
,
PIN2 code
, and
Lock code
—You can change the
PIN code, PIN2 code, and lock code. These codes can only
include the numbers from 0 to 9. See "Glossary of PIN and
lock codes," p. 92.
Avoid using access codes similar to the emergency numbers
to prevent accidental dialing of the emergency number.
If you lock your phone or forget any of these codes, contact
your service provider.
Autolock period
—You can set an autolock period, a
time-out after which the phone automatically locks and
can be used only if the correct lock code is entered. Enter
a number for the time-out in minutes, or select
None
to
turn off the autolock period.
To unlock the phone, enter the lock code.
Note: When the phone is locked, calls in offline
profile to certain emergency numbers
programmed into your phone are still possible.
Tip! To lock the phone manually, press the power
key. A list of commands opens. Select
Lock phone
.
Lock if SIM changed
—You can set the phone to ask for
the lock code when an unknown SIM card is inserted into
your phone. The phone maintains a list of SIM cards that
are recognized as the owner’s cards.
Fixed dialing
—You can restrict calls and text messages
from your phone to selected phone numbers, if supported
by your SIM card. You need the PIN2 code for this
function. To view the list of fixed dialing numbers, select
Menu
>
Tools
>
Settings
>
Security
>
Phone and SIM
>
Fixed dialing
. To add new numbers to the fixed dialing
list, select
Options
>
New contact
or
Add from Contacts
.
When you use
Fixed dialing
, packet data connections are
not possible, except when sending text messages over a
packet data connection. In this case, the message center
number and the recipient’s phone number must be
included on the fixed dialing list.
Tools
92
Options in the
Fixed dialing
view are
Open
,
Call
,
Activ. fixed dialing
,
Deact. fixed dialing
,
New
contact
,
Edit
,
Delete
,
Add to Contacts
,
Add
from Contacts
,
Find
,
Mark/Unmark
,
Help
,
and
Exit
.
When security features that restrict calls are in use (such
as
Call restriction
,
Closed user group
, and
Fixed dialing
),
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 unauthorized 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.
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 unauthorized 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 unauthorized use. The factory setting for
the lock code is 12345. To avoid unauthorized 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. 67.
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 phone.
Scroll right to see a list of personal certificates, if available.
Tools
93
Options in the certificate management main view
are
Certificate details
,
Delete
,
Trust settings
,
Mark/Unmark
,
Help
, and
Exit
.
Digital certificates are used to verify the origin of the
XHTML or WML pages and installed software. However,
they can only be trusted if the origin of the certificate is
known to be authentic.
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.
Important: Even if the use of certificates makes
the risks involved in remote connections and
software installation considerably smaller, they
must be used correctly in order to benefit from
increased security. The existence of a certificate
does not offer any protection by itself; the
certificate manager must contain correct,
authentic, or trusted certificates for increased
security to be available. Certificates have a
restricted lifetime. If
Expired certificate
or
Certificate not valid yet
is shown even if the
certificate should be valid, check that the current
date and time in your phone are correct.
View certificate details
You can only be sure of the correct identity of a server
when the signature and the period of validity of a server
certificate have been checked.
You are notified on the phone display if the identity of the
server is not authentic or if you do not have the correct
security certificate in your phone.
To check certificate details, scroll to a certificate, and
select
Options
>
Certificate details
. When you open
certificate details, the validity of the certificate is checked,
and one of the following notes may be displayed:
Certificate not trusted
—You have not set any application
to use the certificate. See “Change the trust settings”.
Expired certificate
—The period of validity has ended for
the selected certificate.
Certificate not valid yet
—The period of validity has not
yet begun for the selected certificate.
Certificate corrupted
—The certificate cannot be used.
Contact the certificate issuer.
Change the trust settings
Before changing any certificate settings, you must make
sure that you really trust the owner of the certificate and
that the certificate really belongs to the listed owner.
Tools
94
Scroll to an authority certificate, and select
Options
>
Trust settings
. Depending on the certificate, applications
that can use the selected certificate are as follows:
Symbian installation
:
Yes
—The certificate is able to certify
the origin of a new Symbian operating system application.
Internet
:
Yes
—The certificate is able to certify servers.
App. installation
:
Yes
—The certificate is able to certify
the origin of a new Java application.
Online certif. check
—Select to check the online
certificates before installing an application.
Select
Options
>
Edit trust setting
to change the value.