How to fix slow Galaxy S10 5G | fix for slow performance

The Galaxy S10 5G is an amazing device and that’s because it sports the best hardware and software. But just like any top smartphone, it is not perfect and can encounter problems just as easily as even the cheapest phone today. In this troubleshooting episode, we’ll show you the troubleshooting steps that you can take if you think that your Galaxy S10 5G has become slow or has slow performance issue.

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How to fix slow Galaxy S10 5G | fix for slow performance

Does your Galaxy S10 5G appear slow? Learn what you can do if you think that your device is no longer working as fast as it once was below.

Slow Galaxy S10 5G fix #1: Use Device Care to optimize

The new Galaxy S10 5G packs a punch. Hardware-wise, it’s one of the fastest devices in the market today. If you recently noticed that it seems to be slowing down when you open apps or whenever it does a task, there may be a bug that causes it. The first thing that you want to do about this issue is to ensure that you optimize the system. There’s a default system option to do this. Follow the steps below.

  1. Open Settings app.
  2. Tap Device Care.
  3. Tap Optimize Now button.
  4. Tap Done when finished.

Sometimes, lack of storage space in internal memory can cause the system to work sluggishly. Once you’ve optimized the device, tap on Storage below the Optimized button. At the top section, you should see the estimated remaining storage space. If you’re running low on space, make sure to delete some files. In order for the system to work normally, there should be at least 1GB of storage left. If you badly needed space, you can move non-system critical files like photos, videos, audio, or documents to your computer or to an SD card. 

Slow Galaxy S10 5G fix #2: Close apps

Too many apps running actively and in the background may cause slow performance. Although Android is designed to automatically manage RAM efficiently without user input, it does not happen at all times. If left running for a long time, it may be unable to work properly as well as developers hope. From time to time, you still need to close apps in order to clear its memory. If you’ve been experiencing slow performance issue for some time now, closing apps as a troubleshooting step is not a bad idea.

If you don’t want to manually close all apps, you can try to selectively do so by going after big, resource-demanding apps first like games or social media apps. To close an app on the Galaxy S10 5G:

  1. Tap the Recent Apps key, which is left of the home button on your screen.
  2. Scroll up or down to see what’s running and open.
  3. Swipe from the left or right to close apps.
  4. Swipe it off the screen to close it.
  5. This will clear the app.

If you want to just simply close all apps:

  1. Tap the Recent Apps key, which is left of the home button on your screen (shown above)
  2. Scroll up or down to see what’s running and open
  3. Select Close All button at the bottom of the screen.

Slow Galaxy S10 5G fix #3: Perform soft reset

If your Galaxy S10 5G is still slow at this time, the next best thing that you can do is to refresh the device itself. You can do this by doing a soft reset. 

This type of restart is usually helpful in situation like the one you’re having. To soft reset your Galaxy S10 5G:

  1. Press and hold the Power and Volume down key for up to 45 seconds.
  2. Wait as the device restarts.

In some Galaxy S10 5G versions, there may be a slight different way to do the same procedure. Here’s how:

  1. Press and hold the Power and Volume Down buttons until the ‘Maintenance Boot Mode’ screen appears (approx. 10 seconds).
  2. From the ‘Maintenance Boot Mode’ screen, select Normal Boot. Utilize the volume buttons to cycle through the available options and the Power button to select.
  3. Wait for the process to complete. It may take up to 60 seconds.

Slow Galaxy S10 5G fix #4: Refresh system cache

Android uses a set of temporary files called system cache to load apps quickly. This type of cache that can negatively impact the entire system or some apps when corrupted is the system cache. This one is used by Android Operating System to load apps. System cache usually gets corrupted after an update, following app installation, or if there’s system-wide changes. To see if you have a bad system cache issue, follow the steps below:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key several times to highlight ‘wipe cache partition’.
  5. Press Power button to select.
  6. Press the Volume down key until ‘yes’ is highlighted and press the Power button.
  7. When the wipe cache partition is complete, “Reboot system now” is highlighted.
  8. Press the Power key to restart the device.

Slow Galaxy S10 5G fix #5: Install update

Many people don’t usually know that installing updates can fix known bugs. Make sure that all apps are up-to-date and that Android OS is updated too. 

Slow Galaxy S10 5G fix #6: Scan for malware

Some malware may cause problems or affect performance. Try running the default antivirus on your device and see if it turns up something. To do that:

  1. Open Settings app.
  2. Tap Device care.
  3. Tap Security.
  4. If it’s your first time to use the default antivirus or antimalware service on your device, hit ACTIVATE.
  5. Then, hit Scan phone.

Slow Galaxy S10 5G fix #7: Check for rogue apps

If your Galaxy S10 5G became slow after installing an app, try to delete that app and see if it works. If you can’t remember the app, or if you suspect that one of them is causing the problem, you can boot the device to safe mode. Some third party apps may be poorly coded or may be build intentionally to cause havoc. To check if that’s the case, restart the device to safe mode and see what happens. Here’s how:

  1. Press and hold the Power button until the Power off window appears then release.
  2. Touch and hold Power off until the Safe mode prompt appears then release.
  3. To confirm, tap Safe mode.
  4. The process may take up to 30 seconds to complete.
  5. Upon reboot, “Safe mode” appears in the lower-left of the home screen.

Remember that third-party applications are disabled in this mode so what you can use are pre-installed apps. If the Galaxy S10 5G won’t be slow on safe mode, that means that the problem is due to a bad app. Uninstall the app you recently installed and see if that will fix it. If the problem remains, use the process of elimination to identify the rogue app. Here’s how:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your S10 5G is still problematic, repeat steps 1-4.

Slow Galaxy S10 5G fix #8: Check for overheating

In some cases, the main reason for slow performance issue is overheating. This can occur if there’s an app issue, software glitch, or hardware malfunction. If you noticed that your device has gone slow and become too warm to touch when you use it, it’s likely overheating. By design, the Galaxy S10 5G is supposed to keep the system slower or shut down the system if internal temperature becomes too high.

In most cases, overheating can also just be an indicator of a deeper problem. If your S10 keeps overheating even when you’re not using it to run big apps like games, there may be a more serious trouble underlying it. You must do a factory reset to check if it can be fixed on your end or not.

Slow Galaxy S10 5G fix #9: Factory reset

The final troubleshooting step that you can perform on your device is factory reset. If the main reason why you have slow Galaxy S10 5G is a software bug, factory reset will likely help. 

To factory reset your Galaxy S10 5G:

Method 1: How to hard reset on Samsung Galaxy S10 via Settings Menu

  1. Create a backup of your personal data and remove your Google account.
  2. Open Settings app.
  3. Scroll to and tap General management.
  4. Tap Reset.
  5. Select Factory data reset from the given options.
  6. Read the information then tap Reset to continue.
  7. Tap Delete All to confirm action.

Method 2: How to hard reset on Samsung Galaxy S10 5G using hardware buttons

  1. If possible, create a backup of your personal data ahead of time. If your problem prevents you from doing that, then simply skip this step.
  2. Also, you want to make sure that you remove your Google account. If your problem prevents you from doing that, then simply skip this step.
  3. Turn off the device. This is important. If you can’t turn it off, you’ll never be able to boot to Recovery Mode. If you are not able to shut the device off regularly via the Power button, wait until the phone’s battery is drained. Then, charge the phone for 30 minutes before booting to Recovery Mode.
  4. Press and hold the Volume Up button and the Bixby button at the same time.
  5. While still holding the Volume Up and Bixby keys, press and hold the Power button.
  6. The Recovery screen menu will now appear. When you see this, release the buttons.
  7. Use the Volume Down button until you are highlighting ‘Wipe data/factory reset.’
  8. Press the Power button to select ‘Wipe data/factory reset.’
  9. Use Volume Down to highlight Yes.
  10. Press the Power button to confirm factory reset.

Set up your Galaxy S10 5G again and check for the problem. Be sure to do this without installing any app first. If the problem is still there, have the phone repaired.

Slow Galaxy S10 5G fix #10: Repair

You’ll want to let Samsung check the device to find out if it needs to be repaired. Visit your local Samsung store or Service Center for this.


If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

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