LG Stylo 2 Plus LG-K550 - Manual (Page 30)

Basics 29
Optimizing battery life
Extend your battery's power by turning off features that you do not need
to run constantly in the background. You can monitor how applications
and system resources consume battery power.
Extending your phone's battery life:
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Turn off radio communications when you are not using. If you are not
using Wi-Fi, Bluetooth or GPS, turn them off.
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Reduce screen brightness and set a shorter screen timeout.
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Turn off automatic syncing for Gmail, Calendar, Contacts and other
applications.
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Some applications you download may consume battery power.
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While using downloaded applications, check the battery charge level.