How to fix LG V40 ThinQ random restart issue

One of the annoying issues that LG V40 ThinQ users may encounter is a random reboot problem. This troubleshooting article will show you how to solve this problem.

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Problem: How to fix the LG V40 ThinQ random restart problem

Phone is a LG V40 ThinQ. It worked well until 2 weeks ago. The problem is that the phone reboots frequently or hangs and I have to perform a soft reboot (maintaining power and volume) for the phone to answer. After a gradual reboot, it sometimes hangs during the unlocking process. When it freezes when unlocking, it heats up and the battery discharges quickly. it restarts or freezes several times a day. Sometimes his 10 minute gap is sometimes good for 12 hours. It seems to worsen gradually (more frequently). Is this phone ready for trash? My brother suggested replacing the battery but I do not want to put $ in a lost cause.

Solution : In this case, the main concern is to find the reason for your problem. Since there is no direct way to know the cause of the problem, you will need to complete a set of troubleshooting steps. Here are the troubleshooting steps you can perform.

Forced Reboot

A random reboot problem can sometimes be caused by temporary bugs. These types of bugs may be related to the current Android session. Therefore, updating the system can solve the problem. In your case, we recommend that you force the device to restart to clear the RAM and eliminate any bugs. Hold down the power button and the volume at the same time until the device turns off, about 8 seconds, then release. Your phone will restart normally, but its memory will be refreshed and its applications and services will be reloaded. If the problem persists after that, proceed to the next procedure.

The Clear Cache Partition

Android uses a set of temporary files called system cache to load applications. Sometimes this cache is corrupted, which can then cause performance issues and other issues. To check if your device has a system cache problem, we suggest you clear the cache partition. Here's how:

In the Home screen, tap Settings.
Tap the General tab.
Storage of the tap.
Press Internal memory.
Wait until the menu options are complete.
Tap Free Space.
Tap Temporary files and raw files.
Select the following options:

Cached data
Clip Binder Temporary Files
Raw files of the camera

Press Delete.
Restart the device and look for the problem.

Observe Safe Mode

Sometimes a downloaded application interferes with Android or other applications. It may be for this reason that your device continues to turn off by itself. To check if you have a problem with an incorrect application, try starting the device in safe mode.

With the display turned on, press and hold the Power key.
In the options menu that appears, press and hold the off button.
When prompted to restart in safe mode, press OK.
After rebooting your device, safe mode appears at the bottom of the screen.
Watch the phone and see if the problem reappears.

If your LG V40 ThinQ works properly in safe mode, but returns to an unstable state when booted in normal mode, this is a sure sign of a problem with the wrong application. To find out which of your apps is the culprit, you want to use the removal method. Here's how:

Start your LG V40 ThinQ in safe mode.
Watch the phone and look for the problem.
If your LG V40 ThinQ does not restart itself, it means that you have a faulty application problem.
Uninstall an application that you think might be causing the problem.
After uninstalling an application, restart the phone in normal mode and look for the problem (watch the phone again).
If the phone still does not work properly, repeat steps 1-5.

Check overheating

Smartphones are designed to reboot when a certain level of internal temperature is reached. In other words, overheating can occur if your phone gets too hot. Have you noticed that your LG V40 ThinQ warms up uncomfortably before your phone restarts alone? If this is the case then there must be overheating.

In this case, overheating is not the problem. You must find out what causes the device to overheat if you want to get to the bottom of things. As a general hint, you can take note of the action you are doing. For example, if your phone freezes, overheats and restarts during the game, this app may be causing the problem. Try to remove it from the system and check what is happening.

Resetting factory values ​​

You want to clear the device through a factory reset if none of the above has helped you. Be sure to back up your personal data in advance to avoid losing it. Factory reset will restore your device's default settings and delete all your files and data saved in your device's internal memory. Follow the steps below to reset your device at the factory.

Back up all data in the internal memory before performing a general reset.
Turn off the device.
Press and hold the power and volume down buttons.
When the LG logo appears, quickly release the power button, and then hold it down while holding down the volume down button.
When the message "Delete all user data (including LG and operator applications) and reset all settings" appears, use the Volume Down button to highlight Yes.
Press the power button to reset the device.

Solution: install an antivirus

In some cases, freeze and random restart issues can be caused by malware or viruses. To reduce the risk of infection by your virus on your LG V40 ThinQ, which can sometimes lead to random restart issues, make sure you have installed a good antivirus application. Although they are not 100% effective in preventing infection with the virus, it is better to have them than not at all. Just be sure to install only one antivirus application. With regard to these types of applications, having several of them is not a good idea.

Workaround: Calibrating the Battery

Sometimes Android can lose sight of the current battery level. To recalibrate the operating system so that it gets accurate readings of the battery level, proceed as follows:

Empty the battery completely. This means that you need to use your device until it turns off completely and the battery level indicates 0%.

Charge the phone until it reaches 100%. Be sure to use the original charger of your device and let it charge completely. Do not unplug your device for at least two hours and do not use it during charging.
After the time has elapsed, unplug your device.
Restart the device.
Use your phone until it is completely out of power again.
Repeat steps 1 to 5.

Get involved with us

If you are one of the users who is having a problem with your device, report it to us. We offer free solutions to problems related to Android. If you encounter a problem with your Android device, just fill out the short questionnaire completed in with this link and we will try to publish our responses. in the next posts. We can not guarantee a quick response, so if your problem is time sensitive, find another way to solve it.

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