Nokia E71

Page 110
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your fixed dialling contacts. Contact your service provider
if you do not have the code. To cancel the service, select
Options
 > 
Deactivate fixed dialling
.
Tip: To send text messages to the SIM contacts while
the fixed dialling service is active, you need to add the
text message centre number to the fixed dialling list.
Certificate manager
Select 
Menu
 > 
Tools
 > 
Settings
 > 
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.
Certificate trust settings
Trusting a certificate means that you authorise it to verify
web pages, e-mail servers, software packages, and other
data. Only trusted certificates can be used to verify services
and 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
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