Samsung Galaxy A20 randomly shuts down. Here’s the fix.

When a smartphone like the Samsung Galaxy A20 randomly shuts down, there’s always two possibilities; either it’s an issue with the hardware, or just a problem caused by a software-related issue. It is difficult to determine what the issue is all about, let alone fix it, without doing some troubleshooting procedures. As an owner, you should be willing to do even the most basic solutions to this kind of problem. 

In this post, I will walk you through in troubleshooting your Galaxy A20 that randomly shuts down without warning. We will try to consider all possibilities and rule them out one after another until we can determine what the issue is and hopefully fix it. So, if you’re one of the owners of this phone that’s bugged down by this kind of problem, continue reading as this article may be able to help you one way or another. 


Before we move on to our troubleshooting, if you happen to find this post while looking for a solution to a different problem, then visit our Galaxy A20 Help Guides page for we have already addressed some of the most common issues with this device. We may have already published articles that could help you fix your problem. Find issues that are similar to yours and feel free to use our solutions.

Troubleshooting Galaxy A20 that randomly shuts down

This is just one of those performance issues you may encounter from time to time. It can be very serious or just a pretty minor problem depending on how it all started. With that being said, here’s what I suggest you do about it…

First solution: Connect your phone to its charger and observe

The first thing that you have to do to isolate the problem is to use it while it’s connected to the charger. What we’re trying to accomplish here is to know whether the phone still shuts down by itself even if it’s connected to its charger. It is very much possible that this problem is caused by a failing battery or any hardware component. To make it easier, here’s a step-by-step guide: 


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  1. Plug the charger to a working wall outlet. 
  2. Connect the phone to the charger and make sure it’s charging. 
  3. While it’s connected to the charger, try using it normally to see if it still randomly shuts down. 

If your phone doesn’t power down if connected to the charger, the problem could already be with the battery or its hardware. But continue troubleshooting to probe further. 

ALSO READ: Fixing Samsung Galaxy A20 that won’t charge

Second solution: Use your phone in Safe mode

Running your phone in safe mode will temporarily disable all third-party applications. It is important that you do this procedure because it is also possible that one or some of the apps you installed is causing the problem. This is how it’s done: 

  1. Press and hold the Power key until options show. 
  2. Tap and hold the Power off option until it changes into Safe Mode. 
  3. Tap the Safe mode icon to restart your device.
  4. Once the reboot is successful, you should see ‘Safe mode’ at the lower-left corner of the screen. 

While your Galaxy A20 is in this mode, use it as you usually do and then closely observe to see if it still randomly shuts down. If the problem is fixed while your phone is in this mode, then there is an app or two that might be triggering the problem. This is what you have to do next: 

  1. Restart your phone normal to boot into standard mode. 
  2. Remember the apps you installed about the time when the phone starts to randomly shut down.
  3. Once you already have an app in mind, swipe down from the top of the screen to pull the notification panel down. 
  4. Tap the Settings icon on the upper-right corner. 
  5. Scroll to and then tap Apps. 
  6. Find and tap suspected app. 
  7. Tap Storage. 
  8. Touch Clear data and tap OK to confirm.
  9. Tap the back key once and then touch Uninstall. 
  10. Confirm that you want to remove the app from your phone. 

On the other hand, if your phone still randomly shuts down even in safe mode, then move on to the next solution. 

ALSO READ: Samsung Galaxy A20 got stuck on the Black Screen of Death

Third solution: Reset all settings

It is also possible that this problem is caused by some incorrect settings, especially if the issue started shortly after you’ve changed some settings in your phone. While it is often difficult to determine the setting that triggers the issue, you always have an option to reset all settings without deleting your data. This is what you’re going to do next: 

  1. Swipe down from the top of the screen to pull the notification panel down. 
  2. Tap the Settings icon on the upper-right corner. 
  3. Scroll to and tap General management. 
  4. Touch Reset. 
  5. Tap Reset settings. 
  6. Tap the Reset settings button. 
  7. If prompted, enter your PIN, Password or Pattern. 
  8. Finally, tap Reset.

If your phone still randomly shuts down after this, then move on to the next solution. 

Fourth solution: Wipe cache partition

The fact is when it comes to performance issues, it’s always possible that they’re caused by some corrupt system cache files. The next thing that you need to do if your phone still randomly shuts down after doing the procedure above is to wipe the cache partition. This will delete the old cache and replace it with a new one. Here’s how it’s done: 

  1. Turn off the device.
  2. Press and hold the Volume Up and Power keys.
  3. When the Galaxy A20 logo shows, release all three keys.
  4. Your Galaxy A20 will continue to boot up into the Recovery Mode. Once you see a black screen with blue and yellow texts, proceed to the next step. 
  5. Press the Volume down key several times to highlight wipe cache partition.
  6. Press Power key to select.
  7. Press the Volume down key to highlight yes, them and press the Power key to select.
  8. When the wipe cache partition is complete, Reboot system now is highlighted.
  9. Press the Power key to restart the device.

Once your phone has successfully rebooted, try to see if it still randomly shuts down. If it does, then move on to the next solution. 

ALSO READ: Samsung Galaxy A20 keeps freezing. Here’s how to fix it.

Fifth solution: Backup your files and reset your phone

When it comes to problems like this and as long as they’re with the firmware, you should be able to fix them with a reset. This is going to be your last resort but before you actually reset your phone, make sure to create a backup of your important files and data so you won’t lose them. After the reset, remove your Google and Samsung accounts so that you won’t be locked out. Once ready, follow these steps to reset your phone: 

  1. Turn off the device.
  2. Press and hold the Volume Up and Power keys.
  3. When the Galaxy A20 logo shows, release all three keys.
  4. Your Galaxy A20 will continue to boot up into the Recovery Mode. Once you see a black screen with blue and yellow texts, proceed to the next step. 
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

If your Galaxy A20 still randomly shuts down even after doing the reset, then it’s time you brought it back to the store where you bought it, or to a local shop so that a technician can check it up for you. 

I hope that we’ve been able to help you fix your Galaxy A20 that randomly shuts down by itself. We would appreciate it if you helped us spread the word so please share this post if you found it helpful. Thank you so much for reading!

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We are committed to helping our readers fix the problems with their phones as well as learn how to properly use their devices. So, if you have other issues, you may visit our Help Guides page so you can check by yourself the articles we’ve already published that contain solutions to common problems. Also, we do create videos to demonstrate how things are done on your phone. Visit our Youtube Channel and please subscribe to it. Thanks.