LG LM-K300UM Smartphone User Guide

Quick Start GuideLM-K300UMLM-K300QMLM-K300QM6


To turn on the device, press and hold for a few seconds.

For more information, please visit www.lg.com to view the user guide.Do NOT attempt to remove the back cover.

  • This device has a non-removable battery. Do not attempt to remove the back cover. Doing so may severely damage the battery and device, which could cause overheating, fire, and injury.


  • Restarting the deviceIf the device becomes unresponsive, simply press and hold the Volume Down key and Power key at the same time until the device restarts.

Installing the SIM card and memory card

Insert the SIM card and memory card with their gold-colored contacts facing downwards as shown in the figure.


  • Always use a genuine SIM card supplied by the operator.

Charging the battery

  • The Charger/USB port is at the bottom of the phone.
  • To maximize battery life, make sure that the battery is fully charged before you use it for the first time.
  • Make sure to use an LG-approved charger, battery, and charging cable. Charging the battery with a third-party charger may cause the battery to explode or may damage the device.
  • Using the device when it is charging may cause electric shock. To use the device, stop charging it.


  • Remove the charger from the power socket after the device is fully charged. This prevents unnecessary power consumption.

Emergency AlertsYou can choose which emergency alerts to receive by changing the settings as follows.

  1. From the Home screen, tap .or tap Settings > Network & internet >Wireless Emergency Alerts.
  2. Tap: > Settings to customize the emergency alert features.
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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 efficientlyBattery lifespan may decrease if you keep many apps and functions running simultaneously and continuously. Cancel background operations 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 in use.
  • Check the battery usage details and close any downloaded apps that are draining the battery.

All materials in this QSG including, without limitation, the design, the text, and any images are the property of LG Electronics MobileComm U.S.A.,Inc. Copyright © 2020 LG Electronics MobileComm U.S.A., Inc. ALL RIGHTS RESERVED. LG, LG Life’s Good, and the LG logo are registered trademarks of LG Corp. Google and Android are trademarks of Google Inc. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. worldwide. Wi-Fi® and the Wi-Fi logo are registered trademarks of the Wi-Fi Alliance. All other trademarks and copyrights are the property of their respective owners.Unless otherwise specifi ed herein, all accessories referenced herein are sold separately. All features, functionality, and other product specifi cations aresubject to change.

Visit www.lg.com to view the user guide and more information.Some content and illustrations may differ from your device depending on the region, service provider, software version, or OS version, and are subject to change without prior notice.

www.lg.com/us/Printed in ChinaMBM67465901 (1.0)


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