1. To restrict calls from your device, select Options >
New SIM contact, and enter the contact name and
phone number to the list of numbers to which calls are
allowed, or select Add from Contacts to copy the
contact from the contacts list. To restrict calls by a
country prefix, enter the country prefix in the list of
numbers. All phone numbers to which calls are allowed
must start with this country prefix.
2. Select Options > Activate fixed dialling. You need
your PIN2 code to activate and deactivate fixed dialling
or edit your fixed dialling contacts. If you do not have
the code, contact your service provider. 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 > Control 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 co nnect to an on line b ank 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.
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Security and data management