Battery
Learn how to prolong battery life.
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 phone, and keep talking for longer.
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Always charge the battery fully.
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When power saving mode is activated, the phone does not scan, or scans less often, for available WLAN networks, and closes connections when they are not used by any application.
To check the battery status, and activate power saving mode, select 
and Device > Battery .
Tap and hold the Open applications view, and select Close all, or select 
on the application you want to close.
Sounds and effects
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Mute unnecessary tones, such as touch screen tones.
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Use wired headphones, rather than the loudspeaker.
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Change the length of the time-out period after which the phone display switches off.
Select and Device > Display > Display time-out .
Select , and drag the Brightness slider.
Select and Wallpaper.
Network use
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If you are listening to music or otherwise using your phone, but do not want to make or receive calls, activate the flight mode.
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Use a WLAN connection to connect to the internet, rather than a packet data (GPRS or 3G) connection.
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If your phone is set to use both GSM and 3G networks (dual mode), the phone uses more power when searching for the 3G network.
Select and Mobile network > Network mode > GSM .
Select and Bluetooth.
Select and Mobile network > Data roaming and activate Always ask.