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Learn how to save battery life on the LG K40.


On this page:



Battery saving mode

  1. From the apps list, tap Settings > General > Battery > Battery saver.
  2. Choose between the following options:
    • Off
    • Extended: Disables Vibration, Background app activity and data usage; Reduces max brightness to 90%
    • Maximum: Disables Vibration, Wi-Fi, Bluetooth, Location, Background app activity and data usage; Sets the theme to Black; Reduces brightness to 80%; Reduces framerate


Tips to save battery life

  • Change application sync settings
  • Lower screen brightness and timeout duration
  • Turn on Airplane Mode if traveling to an area without mobile signal or Wi-Fi.
  • Turn off background data
  • Turn off Wi-Fi, Bluetooth, GPS and Smartphone Mobile Hotspot
  • Uninstall unused apps
  • Update to the latest software


Set device to sleep when unused

Press and then quickly release the Power key to set the screen to sleep mode.

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