Nokia 5800 - XpressMusic Smartphone - WCDMA User Manual page 99

service provider. If you forget the lock code, contact a
Nokia Care point or your service provider.
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
●
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.
Remote phone locking
●
lock.
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 settings Certificate
>
© 2009 Nokia. All rights reserved.
— To avoid unauthorised use,
— Set the device to ask for
— Enable or disable remote
— Set the device to display
and Phone Phone mgmt.
>
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 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
●
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 and edit authority
— View and edit trusted site
— View and edit personal
— View and edit device
Settings
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