■ Browser security
Security features may be required for some services, such as online banking or
shopping. For such connections you need security certificates and possibly a
security module, which may be available on your SIM card. For more information,
contact your service provider.
Certificates
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.
Before changing any certificate settings, you must make sure that you really trust the owner
of the certificate and that the certificate really belongs to the listed owner.
There are three kinds of certificates: server certificates, authority certificates, and
user certificates. You may receive these certificates from your service provider.
Authority certificates and user certificates may also be saved in the security
module by the service provider.
To view the list of the authority or user certificates downloaded into your device,
select Menu > Settings > Security > Authority certificates or User certificates.
is displayed during a connection if the data transmission between the phone
and the content server is encrypted.
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P C c o n n e c t i v i t y
The security icon does not indicate that the data transmission between the gateway and the
content server (or the place where the requested resource is stored) is secure. The service
provider secures the data transmission between the gateway and the content server.
Digital signature
You can make digital signatures with your phone if your SIM card has a security
module. Using the digital signature can be the same as signing your name to a
paper bill, contract, or other document.
1. To make a digital signature, select a link on a page, for example, the title of the
book you want to buy and its price. The text to sign, which may include the
amount and date, is shown.
Check that the header text is Read and that the digital signature icon
is
shown.
2. To sign the text, read all of the text first, and select Sign.
The text may not fit within a single screen. Therefore, make sure to scroll
through and read all of the text before signing.
3. Select the user certificate you want to use. Enter the signing PIN. The digital
signature icon disappears, and the service may display a confirmation of your
purchase.