Sony Ericsson P910 用户手册

The other tab contains all settings that are not related to the 
device or connections. This is also where settings from system 
components and add-ons, developed by third-party developers, 
will be found.

Digital certificates ensure that the Web or WAP pages you visit, 
or any software you install, really are created by the person you 
expect.

Certificates may be present on the pages that you view or the 
software that you download. Your P900 compares these 
certificates with a set of certificates that are stored in 

 to ensure the authenticity of the page or software. If the 

certificates do not match, your P900 informs you, and gives you 
the following choices:

•

Prevent the page being loaded or the software being installed.

•

Continue at your own risk.

The certificates on your P900 have been created and issued by 
an independent organisation that ensures their authenticity.

Security information is displayed when 

 

cannot be sure of the origin of the page or software. For 
example, security information will be displayed if:

•

The certificate on a page has expired.

•

The identity of a software manufacturer cannot be verified.

Security information is also displayed when a certificate on your 
P900 has:

•

Expired.

•

Been revoked by the independent organisation that issued it.

Your P900 handles certificates automatically so, most of the 
time, you can browse the Internet securely without using 

. If you do need to add or delete a certificate, 

you will usually be informed by your network operator or 
system administrator. You should delete a certificate from 

 if you are informed, or suspect, that:

•

The certificate does not belong to the person who supplied it.

•

The certificate was issued incorrectly by the independent 
organisation that created it.