Nokia 5800 XpressMusic User Manual page 103

Lock code — The lock code is used to unlock the device.
●
To avoid unauthorised use of your device, change the lock
code. The preset code is 12345. The new code can be 4-255
characters long. Alphanumeric characters and both
uppercase and lowercase characters can be used. The
device notifies you if the lock code is not properly
formatted. Keep the new code secret and separate from
your device.
Phone autolock period
●
you can set a time-out after which the device
automatically locks. A locked device cannot be used until
the correct lock code is entered. To turn off autolock, select
None.
Lock if SIM card changed
●
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.
Remote phone locking
●
Closed user group — Specify a group of people to whom
●
you can call and who can call you (network service).
Confirm SIM services
●
confirmation messages when you are using a SIM card
service (network service).
Certificate management
Select Menu Settings
>
Security Certificate management.
>
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
© 2009 Nokia. All rights reserved.
— To avoid unauthorised use,
— Set the device to ask for the
— Enable or disable remote lock.
— Set the device to display
and Phone Phone mgmt.
>
or other malicious software and be sure of the authenticity
of software when downloading and installing software.
Select from the following:
Authority certificates
●
certificates.
Trusted site certificates
●
certificates.
Personal certificates
●
certificates.
Phone certificates
●
Digital certificates do not guarantee safety; they are used to
verify the origin of 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
device are correct.
>
View certificate details — check authenticity
You can only be sure of the correct identity of a server when
the signature and the validity period of a server certificate
have been checked.
— View and edit authority
— View and edit trusted site
— View and edit personal
— View and edit device certificates.
Settings
103