NFC on Xiaomi is not working: all the reasons and ways to restore

Why Xiaomi’s NFC Could Stop Working and What to Do About It

If NFC-The module on your Xiaomi smartphone suddenly stopped responding to cards, tags or other devices — it's not always a cause for panic. In 70% of cases, the problem is solved by software methods without going to the service center. This can be a firmware failure, and physical damage to the antenna.

In this article, we will discuss all possible reasons why NFC Xiaomi phones (including Redmi Note 12 models, POCO X5, Mi 11 and others, and we will give you step-by-step instructions for restoring functionality. MIUI, which are often reset after updates and result in module failure.

Before you start repairing, check the basics: whether the NFC is on in the notification curtain, whether there is mechanical damage to the body in the antenna area (usually located under the top cover), and whether the metal case is blocking work. If everything is fine, read on.

1. Software failures: when firmware or settings are to blame

The most common reason for refusal NFC — malfunction MIUI It's usually something like this: the module turns on but doesn't detect the device, or the phone gives you an error «NFC-chip».

The first thing to do is restart your phone in safe mode and check the NFC. If the module is running in safe mode, the problem lies in one of the installed applications (especially if you have recently installed programs for contactless payments or automation).

• 🔄 Resetting settings NFC: Go to Settings. → Connections and sharing → NFC and click "Reset" and it will return the module parameters to the factory.
• 📱 Cleaning the system cache: in Settings → Annexes → App management find «NFC Service" and clear the cache.
• 🔧 Reverse updates: if NFC He stopped working after the update. MIUI, Try to revert to the previous version through Settings → The phone. → Updating the system → Threefold → Select a Service Package.

If the reset didn’t work, check your regional settings. In some Xiaomi firmware (especially global ones), NFC may be disabled for certain countries. Go to Settings → Additional → Region and select a country where contactless payments are supported (e.g. Russia, Germany, or India).

2. Hardware malfunctions: when the "iron" is to blame

If the software methods don’t work, the problem is probably physical damage. NFC-This is typical of phones that have fallen, been repaired, or come into contact with moisture:

• 🚫 NFC not at all (the tuber in the curtain is inactive).
• 🔍 The phone doesn't detect any. NFC-devices, even after the reset.
• 💧 Artifacts appear on the screen or the phone overheats when you try to activate the module.

Most often, they fail:

1. The NFC antenna is a thin loop of copper under the back cover, and it's damaged when you disassemble the phone or hit it.
2. The NFC chip is a chip on the motherboard that can burn if you short-circuit or overheat.
3. The contact plume – oxidized or departed after falling.

For diagnosis, you can use the test mode Xiaomi:

#4636## → Phone information → Menu (three-point) → NFC Test

If the test shows an error in NFC hardware not found or Chip communication error, this confirms a hardware failure, in which case you will need to replace the antenna or chip in the service center, the cost of repair varies from 1,500 to 5 000 rubles depending on the model.

3. Conflicts with firmware and custom ROM

If you use custom firmware (e.g. LineageOS, Pixel Experience or MIUI EU), the problem with NFC may be due to the lack of drivers or improper build. In such cases, the module either does not turn on or does not work stable (e.g., detects tags only on the 5th attempt).

Solutions for custom firmware:

• 🔄 Refuse the phone to the official version MIUI You can find the instructions for your model on the forum. XDA Developers or 4PDA.
• 📌 Install a separate module NFC. Some firmware (like Havoc-OS) require an additional patch to work with contactless payments.
• 🔧 Check the kernel. In the kernel settings (Kernel Adiutor or EX Kernel Manager can be disabled NFC_NCI.

For owners of phones with an unlocked bootloader, it is useful to know that some banking applications (such as SberBank Online or Google Pay) can block NFC due to the SafetyNet trigger.

1. Install the Magisk module to mask root rights.
2. Activate the MagiskHide option and add banking apps to the exclusion list.
3. Check SafetyNet status through the YASNAC app.

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If NFC stopped working after firmware, try rolling back to the MIUI version that came out of the box with your phone. Build numbers can be found on Xiaomi Firmware Download.

4.Contactless payments problems (Google Pay, SberPay, Mir Pay)

Users often confuse rejection NFC-a module with problems with payment systems, if the phone detects other NFC-devices (such as tags or headphones) but do not make payments, the settings of Google Pay, SberPay or the banking application are to blame.

Common reasons:

• 💳 The card is not added to the wallet or expired.
• 📵 There is no Internet connection (to authorize payment a connection is required).
• 🔒 SafetyNet lock (if the phone is rooted or stitched).
• 📱 Incorrect region in Google Pay (for example, the USA is selected, and the map is Russian).

Instructions for diagnosis:

1. Open Google Pay and check if your card is active (Icon) ⚠️ Next to the map means a problem).
2. Go to Settings → Google → Google Pay Services and update the data.
3. If you use SberPay, reinstall the app and add the card again.
4. For Mir Pay, check if your bank supports this system (list on mirpay.ru).

If payments are not made in just one application (e.g. Google Pay, but work in SberPay), the problem is not the same. NFC-module, and in the wallet settings. Contact the bank or payment system support.

Make sure the card is added to your wallet | Check your Internet connection | Update the Google Pay/SberPay |Reboot your phone | Check the region in your payment service settings-->

5. Influence of covers, films and external factors

Few people know, but NFC-The signal can be blocked even without physical damage:

• 📱 Metal cases or magnetically fastened cases (for example, for holding in a car).
• 🛡️ Thick protective glass (especially with metallized layer).
• 🧲 External magnetic fields (e.g., near speakers or wireless charging).
• 💧 Moisture or condensation under the lid (even if the phone hasn't sunk).

To check the effect of the cover:

1. Take off the case and check the NFC.
2. If the phone is in a case, try bringing it to the terminal from different angles.
3. Use it for the test. NFC-a tag (e.g. a transport card) rather than a payment terminal.

If the NFC is running without a case, the problem is solved, otherwise try drying the phone (put it in a silica gel bag for 12 hours) or checking for oxidation of the antenna contacts.

⚠️ Warning: If you have recently dropped your phone in water or it was in a wet environment (such as a bathroom), do not turn it on. NFC Trying to use the module can short circuit and permanently disable it.

6.Diagnostics through engineering menu and hidden codes

For advanced users, Xiaomi provides hidden test menus where you can check the status of the user. NFC-These methods work on most models, including the Redmi Note. 10/11/12, POCO F3/X4 mi 11/12.

Diagnostic methods:

If you see errors in the engineering menu like NFC hardware not found or Antena short circuit, it confirms a hardware malfunction. In case of software errors (such as NFC service stopped), resetting or flashing will help.

For models on Qualcomm Snapdragon, you can also use the Qualcomm NFC Test app from Google Play, which shows detailed information about the chip and supported protocols (ISO 14443, ISO 15693, etc.).

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If the engineering menu shows an error in NFC hardware not found, it means physical damage to the chip or antenna, in which case the software methods will not help - repair is required.

7. When to contact the service center

If you've tried all of these, but NFC still doesn't work, it's time to get a hands-on, and here are some signs that the problem is unsolvable at home:

• 🔧 NFC It does not turn on even after resetting to factory settings.
• 💥 The phone is making a mistake. NFC Hardware Failure in the Engineering Menu.
• 🔍 Antenna visually damaged (torn, oxidized).
• 💧 The phone fell into the water or was repaired (e.g., changing the screen).

The cost of NFC repair in Xiaomi:

Before the service visit:

1. Make a backup copy of the data (in case of resetting).
2. Write down the phone model and firmware version (find in Settings → About phone).
3. Check whether the service provides a warranty for repairs (at least 3 months).

⚠️ Warning: Don't accept repairs on informal services that offer "sweeten the chip" without diagnosis, resulting in a total loss of functionality in 40% of cases. NFC or even the failure of the motherboard.

FAQ: Frequent questions about NFC on Xiaomi