Green Tips; Save Energy - Nokia 5800 XpressMusic User Manual

Green tips

that needs it, select Menu
Connectivity Admin. settings
>
Packet data connection
not help, switch the device off and then on again.
Q: How do I calibrate the screen?
A: The screen is calibrated at the factory. If it is necessary
to recalibrate the screen, select
Phone Touch input
>
Follow the instructions.
Q: Why do I get the error message Expired
certificate or Certificate not valid yet when I am
installing a downloaded application?
A: If Expired certificate
displayed, even if the certificate should be valid, check
22. Green tips
Here are tips on how you can contribute to
protecting the environment.

Save energy

When you have fully charged the battery and
disconnected the charger from the device, unplug the
charger from the wall outlet.
You do not need to charge your battery so often if you do
the following:
102
Settings and
>
Packet data
>
When needed. If this does
>
Menu Settings
>
Touch screen calibration.
>
or Certificate not valid yet
that the current date and time in your device are correct.
You may have skipped the setting of date and time when
>
starting the device for the first time, or the mobile
network may have failed to update these settings to your
device. To resolve this, select
Phone Phone mgmt.
>
factory settings, and when the device restarts, set the
and
correct date and time.
is
● Close and disable applications, services, and
connections when not in use.
● Decrease the brightness of the screen.
● Set the device to enter the power saver mode after the
minimum period of inactivity, if available in your
device.
● Disable unnecessary sounds, such as keypad and
ringing tones.
Menu Settings and
>
Factory settings. Restore the
>
© 2009 Nokia. All rights reserved.