correctly in order to benefit from increased security The existence of a certificate

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.
Games and applications
You can manage applications and games. Your phone may have some games or
applications installed. These files are stored in the phone memory or an attached
memory card and may be arranged in folders.
Launch an application
Select 
Menu
 > 
Applications
 > 
Games
Memory card
, or 
Collection
. Scroll to a
game or an application, and select 
Open
.
To set sounds, lights, and shakes for a game, select 
Menu
 > 
Applications
 >
Options
 > 
Application settings
.
Other available options may include the following:
Update version  — to verify that a new version of the application is available for
download from the web (network service)
Web page —  to provide further information or additional data for the application
from an internet page (network service), if available
Application access —  to restrict the application from accessing the network
Entertainment 65