Sony Ericsson P800 - Manual (Page 148)

148 Control panel
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Adding and removing certificates
Your P800 handles certificates automatically so, most of the
time, you can browse the Internet securely without using
Certificate manager . If you do need to add or remove a certificate,
you will usually be informed by your network operator or
system administrator. You should remove a certificate from
Certificate manager 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.
Type of certificate
The type can be either Certificate Authority or User .
• Certificate Authority certificates contain server details. This
type of certificate is handled by your P800 when the server
only requires server authentication. This means that your
identity remains anonymous.
• User certificates contain your identity. This type of certificate
is used when the server asks for client authentication. The
client application requests you to identify yourself by
choosing a user certificate.
Display
Use the Display settings to control the screen and power
functions of your P800.
Wallpaper
You can set a picture to be the background for the standby
screen. Select
Browse from the drop-down list to see picture files
available on your P800. Read more about background pictures
in “Personalizing your P800” on page 144.
Screen saver
You can set a screen saver picture to be displayed after a period
of inactivity. You can also turn this facility on and off and select
a delay period of up to 15 minutes before the screen saver is
displayed. Read more about screensaver images in
“Personalizing your P800” on page 144.
If you select the Screen saver device lock check box the device
lock will activate when the delay runs out. Read more about
Device lock in “Device lock” on page 45.
Power save
You can set a power saver to switch off the screen after a period
of inactivity (2, 3, 5, 7, 10, 15, or 30 minutes). When the power
saver activates, the screen will be switched off. Touching the
screen or pressing a key switches the screen on again.