LG K30 LM-X410 Archives - LG K Series Blog

LG K30/K40 Problems, Known Issues & Troubleshooting lmx420 lmx410

December 31, 2020January 2, 2021 by Admin

In the lifecycle of an Android smartphone, we face many software and hardware issues.

The software problems are easier to fix. The software troubleshooting involves soft reset, hard reset, network settings reset, safe mode, software update, wiping the cache partition, deleting apps, moving apps to SD card, etc.

Hardware issues can be related to touchscreen digitizer, LCD, speaker, charging port, headphone jack, microphone, battery, camera, fingerprint scanner, flashlight, power button, sim card/sd card slot, etc.

Let’s check out the known K30/K40 issues and fix them with the help of the below troubleshooting guide –

LG K30/K40 known issues/problems & fix

1. Charging Problems

lg k30 charging problems

LG K30/K40 sound problems – speaker not working, no notification sound

October 1, 2020December 31, 2020 by Admin

Are you facing audio issues on your LG K30/K40? Don’t worry you are in the right place. The sound problems on K30/K40 can range from the speaker not working, low volume, notification sound not working, can’t hear caller, microphone not working, stuck in headphone mode, etc.

In this post, we are going to identify and troubleshoot the common sound problems on K30 & K40. So, Let’s get going –

LG K30 & K40 Sound Problems / Issues

1. No Sound / Not Ringing / Speaker not working

If no sound is coming out of the external loudspeaker on your k30/k40, we need to follow the below troubleshooting steps –

a. Check if the phone is in Vibration, Silent, or Do Not Disturb mode

Make sure your phone is not in silent/vibration mode. Also, make sure that do not disturb is off.

In both scenarios, the phone won’t ring for calls and notifications.

LG K30 & K40 charging problems -not charging/port replacement

September 28, 2020September 28, 2020 by Admin

LG K30/K40 uses a Micro-USB 2.0 charging port without Quick Charge support. By spending a little more on LG Stylo 6, you get the fast charging support. A fast charger takes around half an hour to charge the battery from 0-50%.

LG K40 Fast Charging

With the original LG charger, K40 can be charged from 0-100 in less than 2 hrs. This is a decent charging speed.

You can face 2 kinds of charging problems on LG K40 – Slow Charging or No charging. There can be multiple reasons for this behavior. Let’s try to evaluate & fix the charging issues on LG K30/K40 –