Nokia N97 - Manual (Page 119)

Remote lock
You can lock your device remotely using a predefined text
message. You can also lock the memory card remotely.
Enable remote locking
1 Select Menu > Settings and Phone > Phone mgmt. >
Security settings > Phone and SIM card > Remote
phone locking > Enabled .
2 Enter the text message content (5-20 characters), verify
it, and enter the lock code.
Lock your device remotely
Write the predefined text message, and send it to your device.
To unlock your device, you need the lock code.
Prolong battery life
Many features in your device increase the demand on battery
power and reduce the battery life time. To save battery
power, observe the following:
•
Features that use Bluetooth technology, or allowing such
features to run in the background while using other
features, increase the demand on battery power. Switch
off Bluetooth when you do not need it.
• Features that use wireless LAN (Wi-Fi), or allowing such
features to run in the background while using other
features, increase the demand on battery power. The Wi-
Fi on your Nokia device switches off when you are not
trying to connect, not connected to another access point,
or not scanning for available networks. To further reduce
battery consumption, you can specify that your device
not scan, or scans less often, for available networks in the
background.
• If you have set Packet data connection to When
available in connection settings, and there is no packet
data coverage (GPRS), the device periodically tries to
establish a GPRS connection. To prolong the operating
time of your device, select Packet data connection >
When needed .
• The Maps application downloads new map information
when you scroll to new areas on the map, which
increases the demand on battery power. You can prevent
the automatic download of new maps.
• If the signal strength of the cellular network varies much
in your area, your device must scan for the available
network repeatedly. This increases the demand on
battery power.
If the network mode is set to dual mode in the network
settings, the device searches for the 3G network. You can
set the device to use only the GSM network. To use only
the GSM network, select Menu > Settings and
Connectivity > Network > Network mode > GSM .
• The backlight of the display increases the demand on
battery power. In the display settings, you can change
the length of the time-out period after which the
backlight is switched off. Select Menu > Settings and
Phone > Display > Light time-out . To adjust the light
sensor that observes lighting conditions and adjusts the
display brightness, in the display settings, select Light
sensor .
• Leaving applications running in the background
increases the demand on battery power. To close the
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