LG Stylo 3 PLUS User Manual page 23

Precautions when using the device
Make sure to use the USB cable provided; do not use third party USB
cables or chargers with your device. The LG limited warranty does not
cover the use of third party accessories.
Failure to follow the instructions in this guide and improper use may
damage the device.
Using the battery efficiently
Battery lifespan may decrease if you keep many apps and functions
running simultaneously and continuously.
Stop apps and functions from running in the background to increase
battery life.
To minimize battery consumption, follow these tips:
Turn off the Bluetooth® or Wi-Fi network function when not using
them.
Set the screen timeout to as short a time as possible.
Minimize the screen brightness.
Set a screen lock when the device is not used.
Check the battery usage details and close any downloaded apps that
are draining the battery.
Basic Functions 22