Galaxy S9 And Galaxy S9 Plus Shuts OFF Randomly (Solution)

Many users of the Samsung Galaxy S9 and S9+ have reported and complained about the most recent firmware updates. Why are these users complaining? It is because they have experienced the most annoying and frustrating thing that can happen to a smartphone – randomly shutting off for no obvious reason.

But a little knowledge will go a long way toward helping you and will save you from your Samsung Galaxy S9 or Galaxy S9+ from randomly shutting down again.

Possible Reasons Why Your Galaxy S9 or S9+ is Randomly Shutting Down

The firmware update isn’t the only cause for random shutdowns of your Samsung Galaxy S9 and S9+. The cause can possibly be a hardware problem, physical damage the smartphone has suffered in which you didn’t even pay attention to, or the issue can also be caused by a battery malfunction. This issue basically happens anytime especially when the phone is too busy processing everything you command your device to do.

However, if the random shutdown issue started after you have updated your Samsung Galaxy S9 and S9+, then it’s clear that the problem was caused by updating your phone’s firmware. Since there are too many questions, possibilities, and troubleshooting requests from our readers, we decided to compile and do a comprehensive guide on this particular Samsung Galaxy S9 and S9+ issue.

Troubleshooting Your Galaxy S9 And Galaxy S9 Plus

This kind of issue is very technical so we really recommend the users to get professional help from an authorized smartphone technician. Even though all relevant information will be listed down below, you should still be prepared for when the situation goes from bad to worse with your phone.

However, If you are very eager to troubleshoot your Samsung Galaxy S9’s and S9+’s issues with randomly shutting off, of course, you do so at your own risk.

Below we introduce you to the four most probable causes that you can check by yourself that may help you resolve the problem of your phone randomly shutting down.

Check The Samsung Galaxy S9 or S9+ Battery

One of the several causes, why the Samsung Galaxy S9 and S9+ shut off randomly, is a battery malfunction. The first thing you need to try if the battery is really not working is to check if the problem still exists even if the Galaxy S9 or S9+ is connected directly to a stable power source. If it the problem persists, the problem may not be because of the battery. But if the problem doesn’t persist, you can then speculate that the battery is damaged or has lost its capacity to power up the phone.

To check if the battery is just drained, try to connect the charger to a stable power source for a couple of minutes, then restart the Samsung Galaxy S9 and S9+. After you tried to charge and test it and you no longer experience such problems, you will need to go to a technician and ask for a battery replacement.

You can either order a new battery online if you don’t have the time or you can request to handle the entire process. But remember, even if you ordered it online, you won’t still be able to open up the Galaxy S9 or Galaxy S9+ by yourself, so you’ll still end up in a service center to have a certified technician replace the battery.

Test Third-Party Apps

Most of the time, having your smartphone freeze and shutting off randomly is caused by a faulty app. This is what practice has shown us. But do you know where you can test if a third-party app is really causing the issue? It’s enabling the Safe Mode.

Safe Mode is where you can remove the faulty app to test if it’s the reason why your Samsung Galaxy S9 and S9+ is freezing and shutting off randomly.

How To Get Into The Safe Mode:

To get into the Safe Mode, just press and hold the Power button for seconds. Then release the Power button after the “Samsung Galaxy S9 and S9+” appears on the screen, then tap the Volume Down button. Then just wait until the phone reboots then release the Volume Down button once you see the text “Safe Mode” on the screen.

Boot The Samsung Galaxy S9 And S9+ Into The Safe Mode

  • Try to use the Safe Mode as long as you can so you can determine and check if it will continue to shut off unexpectedly
  • If the issue continues, identify which third-party app is causing the issue and uninstall the problem-causing app
  • In case you can’t determine the app responsible for the issue, back up all the data first then reset your Samsung Galaxy S9 and S9+
  • If the Samsung Galaxy S9 and S9+ continue to shut down randomly even if you’re in the Safe Mode already, it’s clear that a third-party app is not the cause of the issue. Only a couple of built-in apps and services only works in the Safe Mode, so if the issue still exists, you’ll need to identify which app is faulty and uninstall it.

But another method will be to simply back up all your important files then continue resetting your Samsung Galaxy S9 and S9+.

Follow The Step-by-step Guide Below:

  1. First, exit the Safe Mode
  2. Go back to your Samsung Galaxy S9 and S9+ home screen
  3. Tap on the Apps
  4. Go to the Settings app
  5. Tap on Backup and Reset
  6. Then choose Factory Data Reset
  7. Click on Reset Device from the options
  8. Enter your PIN or Password if required. This usually shows up for those who like to have an active lock screen feature on their Galaxy S9
  9. Tap the Continue button to confirm
  10. Then select Delete All
  11. Check the System Cache

If you think that everything started after doing a firmware update, checking the cache system is probably not the culprit. But in most cases, the main reason why most of the Samsung devices are experiencing this kind of issue is due to corrupted caches. So we recommend you to verify the cache situation as well besides from the other factors stated above.

Deleting You Samsung Galaxy S9 And S9+ System Cache

If you decide to delete the system cache to try if it can fix the issue, boot the Samsung Galaxy S9 and S9+ into Recovery Mode first. We assure you that this process is completely safe, meaning, you won’t be risking your files to get lost. Follow the instructions below to know how you can delete the system cache on the Samsung Galaxy S9 and S9+:

  1. Switch off your Samsung Galaxy S9 and S9+
  2. Press and hold the Home, Power, and Volume Up buttons simultaneously
  3. Once you see the Samsung Galaxy S9 and S9+ on the screen, release now the Power button
  4. And once you see the Android logo, release the other two buttons
  5. Wait for a minute until you start navigating inside the Recovery Mode
  6. Select and highlight the Wipe Cache Partition using the Volume keys
  7. Then choose it by using the Power button
  8. Just use the same buttons to highlight an option then select “Yes” on the next screen option
  9. Wait until the wipe cache partition process is finished
  10. Then use the two buttons again to select “Reboot System Now”
  11. Wait until the rebooting process is finished (it usually takes longer than usual)
  12. Ultimate Solution of All Time: Master Reset

Master Resetting Your Samsung Galaxy S9 And S9+

When not even the wipe cache partition stopped your Galaxy S9 or S9+ or Galaxy S9 or S9+ Plus from randomly shutting off, looks like you will have to perform a master reset. Back up all your files from the internal storage. This is just to ensure you won’t lose important data when you start deleting everything. After that:

  1. Switch off the Samsung Galaxy S9 and S9+
  2. Enter the Recovery Mode again
  3. While holding the two buttons, press on the Power key as well (this is the time when the command is taken into account. Do not worry that you’ve been holding the other two keys for too long)
  4. Once the text “Samsung Galaxy S9 and S9+” shows up on the screen, release the Power button
  5. When you see the Android logo on the screen, release the other two buttons. You should also be able to see the message Installing system update. In which case, you will have to wait a little longer until the logo will show up on the display
  6. Once you have successfully entered the Recovery Mode, use the Volume Down key to select the Wipe Data/Factory Reset
  7. Then use the Power key again as the confirm button
  8. Use the Volume Down key to highlight the option asking you to confirm this action: “Yes – delete all user data”
  9. Use the Power key to start resetting the Samsung Galaxy S9 and S9+
  10. After the resetting is done, highlight the Reboot System Now
  11. Then select it using the Power button and wait for the Samsung Galaxy S9 and S9+ to reboot
  12. Remember: It takes longer than it usually does

After trying the methods shown above, your Samsung Galaxy S9 and S9+ should now function normally. This is everything you can try if your device starts to freeze and shuts down randomly. If anything above didn’t work and fixed the issue, then it’s time for you to take it to an authorized service. Get it checked by a technician. They will have all the tools needed to troubleshoot and check the problems of your Samsung Galaxy S9 and S9+.

If you found this article helpful in resolving the problem of the Samsung Galaxy S9 or S9+ randomly shutting off, then you might also find this article useful: Battery Percentage Display On Galaxy S9 And Galaxy S9 Plus.

Have you experienced the problem of your Samsung Galaxy S9 or S9+ shutting off randomly? How did you end up resolving the issue with your phone? Please leave a comment below!

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