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Samsung Galaxy S21

Samsung S21 QR Scanner Not Working – How to Fix It

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The camera app of Samsung Galaxy S21 has a feature to scan QR codes without the need for third-party apps. 

But sometimes, it may not work as expected and you will run into problems like the QR scanner not recognizing the QR code you are scanning. Or maybe the feature is missing from the camera.

Most of the time, the reason why QR code scanner doesn’t work is a problem with the Camera app. But also, there are a few cases where users have reported they experience this issue after doing a software update.

Whatever the reason that causes your Samsung Galaxy S21 QR scanner to not work, by doing the solutions in this guide, you will be able to resolve the problem successfully.

So let’s start troubleshooting your Galaxy S21 smartphone’s QR scanner not working issue.


This guide also applies to other Samsung Galaxy S21 models, such as Samsung Galaxy S21Fe, S21 Plus, and S21 Ultra, as well as the Exynos and Snapdragon variants.

How to fix the Samsung S21 QR scanner not working

Since the main two reasons why the QR scanner doesn’t work well on Galaxy S21 are the Camera app and software updates, we will first do some troubleshooting on them.

Then, if the problem still persists, you can go for the other solutions mentioned at the bottom of this guide. 

Make sure to check if the QR scanner works after applying each solution.

Fix 01 – Re-enable the QR scanner

Re-enabling the QR scanner can help to fix the glitches that cause it to malfunction. To do this;

  1. Open the Camera app
  2. Tap on Settings
  3. See if the “Scan QR codes” setting is turned on. If so, re-enable it. If it is not turned on, turn it on.
Scan QR codes

Fix 02 – Enable QR code scanner in Samsung internet settings

If you don’t know, the Samsung internet app also has the option to enable the same built QR scanner.

If this setting is disabled, then this might be the cause why you cannot use the QR code on your Galaxy S21. Here is what you need to do;

  1. Open Settings
  2. Tap on Apps
  3. Tap on Samsung internet
  4. On the top, tap on “Samsung internet settings”
Samsung Internet Settings
  1. Then tap on “Useful features”
Samsung Internet Settings - Useful features
  1. Now toggle on the button next to “QR code scanner” 

Once done, open the camera app and see if the QR code scanner works.

Fix 03 – Reset camera settings

As the first step to fixing issues inside the camera app on your Galaxy S21, you can reset camera settings to set its values back to default. 

Doing this will help to solve if there is any misconfiguration in the camera settings. To reset the camera, follow these steps;

  1. Open Camera
  2. Tap on Settings (the gear icon on the left side)
  3. Scroll down and tap on “Reset camera settings”
Reset camera settings

Once you reset the camera settings, restart the app and check the QR scanner to see if the solution has worked.

Fix 04 – Clear camera app cache

We have said this a lot of times in our guides. Caching is good to improve how an app performs. But if the caching files are outdated or corrupted (cache can get outdated after a software/app update), then it can cause various issues.

Clearing the cache is probably the fix here. Once you clear the cache the camera app will rebuild it, thus fixing the issue.

So here is what you need to do to clear the camera app cache on your Galaxy S21

  1. Open Settings
  2. Go to Apps
  3. Scroll down and tap on the Camera app
  4. Tap on Storage
  5. Tap on Clear cache
Clear camera app cache

Fix 05 – Clear camera app data

If clearing the camera cache didn’t help, you can try clearing its app data. 

It is relatively same to clear the app data of the camera app;

  1. Go to Settings > Apps and tap on Camera
  2. Tap on Storage
  3. Tap on Clear data
clear camera app data

Fix 06 – Do a software update

As we said earlier, software updates are the other reason why the QR scanner doesn’t work on your Galaxy S21. Since we cannot reverse once the update is installed, we have to do it again and see if the next update has a fix to the issue.


Check our software update trackers for Samsung Galaxy S21.

To update your Galaxy S21, do as follows;

  1. Open Settings
  2. Tap on Software update
  3. Tap on “Download and install”
Download and install software update

Fix 07 – Update the camera app

You can also update the camera app and see if Samsung has released a patch for this problem. Here you have to use the Galaxy Store to update the system camera app.

  1. Open Galaxy Store
  2. Tap on the menu icon
  3. Tap on updates
  4. See if the Camera app is listed. If so, tap on it
  5. Then, tap on the update icon to download and install the app update

Once the Camera app is updated, restart it and see if the QR scanner now works.

Fix 08 – Use a third-party app to scan QR codes

QR Barcode Scanner

If you still face issues with the QR scanner and it is not working, you can install a third-party QR code scanner app.

There are many QR code scanners available on Google Play Store and from such apps, the “QR & Barcode Scanner” app has a lot of downloads and reviews. So you can try that app to scan the QR codes you want.

To download and install the QR & Barcode Scanner, follow the steps below;

  1. First, visit Google Play Store
  2. Tap on the search bar and search for “QR & Barcode Scanner” or you can use this link to directly go to the app
  3. Tap on the install button

Once downloaded, open the app and allow camera access. Then try to scan a QR code to see if the app works perfectly.


We hope this guide helped to fix the QR code scanning issue on your Samsung Galaxy S21. However, you may still have questions and need help. If so, leave a comment below. We will be there to answer your question.

Have a nice day!


The founder of and the tech nerd of the team. He is specialized in Android/iOS development and web development.

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