[Android Central Question]

how to my battery life

[hallux]

We're missing a verb here... Would that be "improve"? One big way is to reduce the apps that have access to location services, some like to constantly scan for your location.

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[Rukbat]

See The Care and Feeding of Lithium Polymer Batteries. It answers most questions about the battery in your phone or tablet. And keep the screen brightness as low as you can, while still keeping it bright enough to be comfortable. The screen, at full brightness, is the largest user of the battery. The location (GPS receiver), wifi, mobile data, all together, don't come close.