Certificate Management - Nokia N73-5 User Manual

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 unauthorized 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.
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
unauthorized use. The factory setting for the lock code is
12345. To avoid unauthorized 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 your service provider.
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.
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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
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.
Copyright © 2007 Nokia. All rights reserved.
to see a list of personal certificates, if available.
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 device
are correct.