XIAOMI REDMI K40S the NFC not working (7 Ways to Fix)

If the NFC on your XIAOMI REDMI K40S is not working properly it may be due to several reasons, in this post we have 7 possible solutions to NFC problems on the XIAOMI REDMI K40S.

Why is my NFC not working on my XIAOMI REDMI K40S?

If you can’t use the NFC on your XIAOMI REDMI K40S, it may be because you haven’t activated it correctly, it may also be a problem with an Android update, or it may even be due to the case you have put on your XIAOMI REDMI K40S. Read on to find out how you can solve these problems and use NFC correctly.

XIAOMI REDMI K40S NFC Not Working

Here we leave you with a series of solutions or guidelines to try in case the NFC does not work on your XIAOMI REDMI K40S. It is somewhat annoying, especially if we are trying to make a payment and it is not possible to execute it. There are several solutions that will be very useful.

1. Make sure that NFC is enabled on the XIAOMI REDMI K40S

NFC tags or terminals can only be read by your XIAOMI REDMI K40S when NFC is enabled. Although this is a basic step, sometimes you may overlook it, so it’s a good idea to check if the NFC switch is on. Here’s how you can enable NFC on Android.

How to enable NFC on XIAOMI REDMI K40S

1. Open the Settings app on your the XIAOMI REDMI K40S.
2. Tap on Connected devices.
3. Tap the Connection preferences option.
4. Now, go to the NFC settings page.
5. Enable the Use NFC option.

If the option is already enabled, disable and re-enable it to make sure there are no bugs preventing NFC from working properly.

2. Remove the XIAOMI REDMI K40S case if it is thick or metallic

Sometimes we get too complicated looking for a solution, when the most effective way is to remove the case of the XIAOMI REDMI K40S when using the NFC. This technology needs a short distance to make the connection and if we have a thick case or a material that does not allow the data to pass, it will be very difficult to get this chip to work well in the XIAOMI REDMI K40S. Especially, if we have a magnetic case or similar.

In addition, a metal case could interfere with the operation of the NFC coils. NFC does not work through a metal surface, so it is best to remove a case that has any type of metal or magnetic component before using NFC.

Therefore, try removing it and reuse this connectivity of your XIAOMI REDMI K40S. If you have discovered that the case is the problem that prevents the NFC from being used normally, it is best to purchase an official one, perfectly developed to protect the XIAOMI REDMI K40S and avoid these headaches.

3. Unlock your XIAOMI REDMI K40S before you bring it near

The primary use of NFC on Android is for contactless payments. Therefore, by default, NFC cannot be used when the XIAOMI REDMI K40S is locked. The feature is present to prevent unauthorized payments. Unlock your XIAOMI REDMI K40S with your PIN or biometric data before approaching it to pay at a terminal.

If Google Pay NFC is not working on your XIAOMI REDMI K40S, this may be the main reason. If you think this is a hassle and you understand the risks of enabling NFC even when your XIAOMI REDMI K40S is locked, you can enable NFC even when your phone’s screen is off. Here’s how to do it.

1. Open the Settings application on your XIAOMI REDMI K40S.
2. Tap on Connected devices.
3. Tap the Connection preferences option.
4. Now, go to the NFC settings page.
5. Uncheck the «Require device unlock for NFC» option.

Now you can use NFC on your XIAOMI REDMI K40S without unlocking it every time.

4. Restart the XIAOMI REDMI K40S

Many problems – both simple and complex – can be addressed using the usual solution, rebooting your XIAOMI REDMI K40S. Just press and hold the power button on your XIAOMI REDMI K40S until you see the power menu.

Then select the Reset option. Wait for your XIAOMI REDMI K40S to power off and back on again before attempting to use NFC again.

5. Clear NFC service cache

Having problems with any application or operation on your XIAOMI REDMI K40S? Clearing the cache is your option. Try clearing the NFC service cache on your XIAOMI REDMI K40S and see if it solves the problem.

Here’s how to clear the NFC service cache on your XIAOMI REDMI K40S:

1. Open the Settings app on your XIAOMI REDMI K40S.
2. Tap on the Apps option.
3. Now, go to View all apps.
4. Tap on the three dots in the upper right corner.
5. Select Show system.
6. Locate and select NFC Service.
7. Now, tap on Storage and Cache.
8. Proceed to clear the cache by tapping the corresponding button.

Restart your XIAOMI REDMI K40S once and then try to use NFC. This solution should work if NFC is not working on your XIAOMI REDMI K40S.

6. Set the default app for touch and pay

You may have several applications on your XIAOMI REDMI K40S that support the touch and pay function. In this case, setting a default app is useful as the apps will not interfere with each other’s operation. Here’s how you can set an app of your choice as the default app for NFC payments.

1. Open the Settings application on your XIAOMI REDMI K40S.
2. Tap on Connected devices.
3. Tap the Connection preferences option.
4. Now, go to NFC.
5. Select Contactless Payments.
6. Click on Default payments.
7. Select the application you use most often and with which you want to pay every time you touch your XIAOMI REDMI K40S to a terminal.
8. Now, tap on Use by default.
9. Choose «Except when another payment app is open» to allow a different app to use NFC whenever it is open.

7. Reset the network configuration of XIAOMI REDMI K40S

Have you tried the above solutions and they didn’t work for you? Resetting the network settings could be your white knight. When you reset the network settings of your XIAOMI REDMI K40S, various parameters, including Wi-Fi, Bluetooth, cellular data and NFC, will be reset to their factory default settings.

This will ensure that any settings that prevent NFC from working properly are changed. Here’s how to do it.

1. Open the Settings app on your XIAOMI REDMI K40S.
2. Scroll down to find the System option and tap on it.
3. Now, go to Reset options.
4. Tap on ‘Reset Wi-Fi, cellular and Bluetooth’.
5. Finally, select the Reset settings button.

This will reset all network settings on your XIAOMI REDMI K40S. Please note that resetting the network settings will disconnect and forget all your Wi-Fi networks, Bluetooth devices and mobile data preferences. You will have to connect to your devices manually once again.

CONCLUSION

It is very annoying when you want to use the NFC of your XIAOMI REDMI K40S to make a payment and it does not work, fortunately here we have several ways to solve this problem.

1. Make sure that NFC is enabled on the XIAOMI REDMI K40S
2. Remove the XIAOMI REDMI K40S case if it is thick or metallic
3. Unlock your XIAOMI REDMI K40S before you bring it near
4. Restart the XIAOMI REDMI K40S
5. Clear NFC service cache
6. Set the default app for touch and pay
7. Reset the network configuration of XIAOMI REDMI K40S

I hope these tips helped you to solve the problem of NFC not working on XIAOMI REDMI K40S. If none of these tips worked, then the best thing to do is to take your XIAOMI REDMI K40S to an authorized service center.