• 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 > Ctrl.
panel > Settings and General >
Personalization > 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.
• To save power, activate the power
save mode. Press the power key,
and select Activate power saving.
To deactivate it, press the power
key, and select Deactivate power
saving. You may not be able to
change the settings of certain
applications when the power save
mode is activated.
Get started
Insert the SIM card and battery
Important: Do not use a mini-UICC
SIM card, also known as a micro-SIM
card, a micro-SIM card with an adapter,
or a SIM card that has a mini-UICC cutout
(see figure) in this device. A micro-SIM
card is smaller than the standard SIM
card. This device does not support the
use of micro-SIM cards and use of
incompatible SIM cards may damage the
card or the device, and may corrupt data
stored on the card.
Safe removal. Always switch the device
off and disconnect the charger before
removing the battery.
1 Remove the back cover.
2 Remove the battery, if inserted.
Get started 13
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