User's Manual

15
If there areotherappl ications that you have downloaded from
unknown source, you need to enable the function before you
caninstallit.
TouchSettingSecurityUnknownsources 
Notallapplicationprovidedfromthe PlayStoreoranyotherthirdparty canbe
supportedorcompatiblewiththisdeviceduetothes pecificationanddeveloper
requirementdifferentiation


OptimizedbatteryLife
You can extend your battery's life  between charges by turning
offfeaturesthatyoudon'tneed.
First touch the Settings icon
 on a Home or All Apps
screen

Extendthelif eofyourbattery

If you aren't using Wi‐Fi, Bluetooth, or Mobile data,
use the Settings app to turn them off: Settings 
Wireless&Networks,thenswitchoff.
 Turnoff GPS:TouchSettingsLocationaccess,then switch
offGPSsatellites.
 Turn down screen brightness and set a shorter
Sleeptimeout:SettingsDisplay.
 If you don't need it, turn off automatic syncing for
all apps: Settings DeviceBattery. Or you can
touch
 icontoenable/disableitfromtaskbar.
Note that this means you need to sync manually to
collectmessages,email,andotherrecentinformation,
and won't receive notifications when updates occur.