You can also use your device without a SIM card. Switch the device off, and remove the
SIM card. When you switch back on, the offline profile is activated.
Important: In the offline profile you cannot make or receive any calls, or use
other features that require cellular network coverage. You may be able to call the official
emergency number programmed into your device.To make calls, you must first change
to another profile.
Remember to comply with any applicable safety requirements.
Prolong battery life
If it seems you're always looking for a charger, there are steps you can take to reduce
the power consumption of your device.
• Always charge the battery fully.
• When power saving mode is activated, device settings, such as Network mode and
the screen saver, are optimised.
Activate power saving mode
Press the power key
, and select Activate power saving. To deactivate power saving
mode, press the power key
, and select Deactivate power saving.
Close the applications you are not using
Press and hold the home key, swipe until the desired application is displayed, and select
.
Sounds, themes, and effects
• Mute unnecessary tones, such as key tones.
• Use wired headphones, rather than the loudspeaker.
• Change the length of the time-out period after which the device display switches
off.
Set the length of the time-out period
Select Menu > Settings and Phone > Display > Light time-out.
Activate a dark theme and wallpaper
Select Menu > Settings and Themes > General. To change the wallpaper, on the home
screen, select Options > Change wallpaper.
30 Basic use
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General
Weight and Dimensions
