User Manual

message centre number to the fixed
dialling list.
Certificate manager
Select Menu > Ctrl. panel > Settings
and General > Security > Certificate
management.
Digital certificates are used to verify the
origins of software but do not
guarantee safety. There are four
different types of certificates: authority
certificates, personal certificates,
trusted site certificates, and device
certificates. During a secure connection,
a server may send a server certificate to
your device. Upon receipt, it is checked
through an authority certificate stored
in your device. You receive notification
if the identity of the server is not
authentic or if you do not have the
correct certificate in your device.
You can download a certificate from a
web site, or receive a certificate as a
message. Certificates should be used
when you connect to an online bank or
a remote server to transfer confidential
information. They should also be used if
you want to reduce the risk of viruses or
other malicious software, and to check
the authenticity of software when you
download and install software to your
device.
Tip: When you add a new certificate,
check its authenticity.
View certificate details
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.
To view certificate details, open a
certificate folder, and select a certificate
and Options > Certificate details.
One of the following notes may appear:
Certificate not trusted — You have not
set any application to use the certificate.
You may want to 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.
Security and data management 143
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