NFC on Xiaomi is turned off by itself: reasons and ways to eliminate

If you have a Xiaomi smartphone (be it Redmi Note 11 Pro)+, POCO F5 or Mi 12T) suddenly ceases to recognize bank cards, subway or other NFC-Labels -- the problem may not be in the tag itself, but in the machine. NFC — common complaint of users, and the reasons it has a lot: from firmware bugs MIUI In this article, we'll look at all the possible scenarios for why. NFC shuts down and give clear instructions on how to return the module to stable operation.

It's important to understand that NFC in Xiaomi can be a little bit snooze in different ways: some people turn off the module after a reboot, others when the screen is locked, others after 5-10 minutes of active use, each case requires a different approach. We analyzed user feedback on 4PDA forums, Mi Community and service centers to collect the most complete database of solutions, let's start with the simplest one - checking settings.

1. Check the basic NFC settings

Before you sin on hardware malfunctions, make sure that the problem is not hidden in the software settings. NFC on Xiaomi can be turned off due to:

• 🔄 Automatic battery optimization that puts the module to sleep.
• 📱 Energy saving mode blocking background processes.
• 🔒 Restrictions for apps (e.g. Google Pay or Mi Pay).
• 🔄 Accidental resetting of settings after updating MIUI.

To rule out these causes, follow the following steps:

1. Open Settings → Connections & Sharing → NFC and make sure the switch is active.
2. Check the Settings section → Battery → Battery optimization: Find the listing of the Google Pay, Mi Pay or NFC-Service and select "No Limitations».
3. Go to Settings. → Annexes → Application management, find NFC-service (com.android.nfc) and reset cache/data.
4. Turn off the power saving mode in Settings → Battery.

Make sure that NFC is included in the Connections menu

Disable battery optimization for NFC-applications

Reset the cache of the NFC service

Turn off the energy saving mode

Reboot your smartphone-->

If the module continues to shut down after these manipulations, move to the next section. Especially often, NFC bugs are observed on MIUI 13-14 firmware for models on Qualcomm Snapdragon 7xx/8xx chipsets (for example, Redmi K50, POCO X5 Pro).

2. Conflicts with firmware and updates

One of the most common reasons for spontaneous disabling of NFC is a bug in the MIUI firmware. Xiaomi users regularly encounter the fact that after the update the system begins to “glut”: the module is running, then not, and errors such as NfcService: Failed to enable NFC appear in the logs.

The problem most often arises from:

• 📱 Smartphones with custom firmware (for example, LineageOS or Pixel Experience).
• 🔄 Devices after air upgrade (OTA), When the firmware files were downloaded with an error.
• 🛠️ Devices after manual downgrading (downgrading version) MIUI).

How to diagnose and correct:

1. Check the version. MIUI: Go to Settings. → The phone. → Version. MIUI. If the version is Global Stable, but NFC glitch - try to switch to EEA Stable (European firmware).
2. Reset network settings: Settings → System → Settings Reset → Network settings Reset. This will help if the conflict is caused by mobile or Wi-Fi settings.
3. Install the update manually: download the full firmware package for your model from en.miui.com and go through Settings → About Phone → System Update → Three Points → Select the Service Pack.

MIUI Global Stable

MIUI EEA Stable

MIUI China Stable

Custom (LineageOS, Pixel Experience, etc.)

I don't know.-->

If the problem has occurred after the update, try to roll back to the previous version.

1. Download the archive with the desired version of MIUI.
2. Rename it to update.zip.
3. Put it at the root of the phone's memory.
4. Press Volume Up + Power to enter Recovery.
5. Select Install update.zip.

⚠️ Attention: Retracement to old firmware may result in bootloop locking.Be sure to unlock your Bootloader before the procedure (checked by the fastboot oem device-info team in the app). ADB).

Hardware malfunctions: antenna and controller

If software methods fail, the problem may lie in physical damage. NFC-This module in Xiaomi is usually located on the antenna or controller:

• 📱 Under the top of the body (near the speaker) - in most models (Redmi Note 10 Pro, POCO X3 Pro).
• 🔄 Under the battery – in some flagships (Xiaomi 12 Pro, Mix 4).
• 🛠️ In a separate module on the motherboard - in old models (Mi 9, Mi 8).

Signs of hardware malfunction:

• 🔴 NFC stops working after falling or hitting.
• 📉 The module is heated when used.
• 🔄 The antenna does not catch tags on one side of the phone.
• 🛠️ On the service menu (#4636##) NFC It is displayed as “Not supported».

How to check the antenna:

1. Remove the back cover (if it is removable) and examine the antenna plume. It should be intact, without tearing or oxidizing.
2. Connect your phone to your PC and check logs via ADB: adb logcat | grep -i nfc If errors such as NfcService: Hardware failure appear in the logs, this confirms hardware failure.
3. Try bringing the phone to NFC-If the signal is only triggered at a certain angle, the antenna is damaged.

If the antenna is damaged, it can be replaced by yourself (if you have experience) or contact the service. The cost of repair varies from 800 to 2500 rubles depending on the model.

⚠️ Attention: In Xiaomi models 12S Ultra and Mix Fold 2 NFC-The antenna is integrated into the display. If it is damaged, it may require replacing the entire screen! 4. NFC Xiaomi may be disabled due to conflicts with installed applications: 💳 Banking applications (Sberbank Online, Tinkoff, VTB Online) – they block NFC for safety». 🔒 Antiviruses (Dr.Web, Kaspersky) - can be considered NFC-traffic as suspicious. 📱 Launchers (Nova Launcher, Hyperion) – sometimes interfere with the work of system services. 🔄 Automation applications (Tasker, MacroDroid) can be forced to disable NFC How to identify and resolve conflict: Launch your phone in Safe Mode: Press the power button → «Restart in Safe Mode" if NFC It works stably – one of the installed applications is to blame. Check the permissions: go to Settings → Annexes → Permits → NFC and make sure that the right apps (like Google Pay) are allowed to use the module. → Battery → Optimizing the battery → find Google Pay/Mi Pay and select "No Limits." Delete suspicious apps: start with the last installed apps. 💡If NFC Disables when you lock the screen, check your Google Pay settings: open the app → Settings → No unlocking required (for payment without input) PIN). Pay particular attention to Google Pay. There's a bug in the latest versions of the app that's causing it to conflict with the Internet. MIUI and forcibly shut down NFC. Solution: Remove Google Pay Updates via Settings → Annexes → Google Pay → Three points. → Remove updates. Turn off auto-update the app on Google Play. 5. Battery and power problems are not well known, but NFC-Xiaomi's module is powered directly by the battery. If the battery is worn out or the power controller is unstable, the module may shut down to save power: 🔋 NFC It stops working at a charge level below 20%. 📉 The module is turned off at high load (games, video shooting). 🔄 The phone is spontaneously rebooted when used NFC. How to check: Install the AccuBattery app and check the battery health. If it's below 80%, it's time to change the battery. Run the power controller test through the battery. ADB: adb shell dumpsys battery Pay attention to the health parameter - if it is displayed as DEAD or OVERHEAT, The battery problem. Try plugging your phone into a charger and checking. NFC. If the module is working, it is the battery’s fault. Decisions: 🔧 Replace the battery (cost for Redmi Note - from 1000 rubles, for flagships - from 2000 rubles.). 🔄 Calibrate the battery: completely discharge the phone, then charge to 100% without interruptions. 🛠️ Check the power controller (disassembly required). ⚠️ Attention: In Xiaomi models 11T Pro and 12 Pro NFC-It's connected to the same controller as wireless charging, and if you're having problems with both of these functions, it's the STMicroelectronics controller. STM32, 6. Factory reset and flashing if all previous methods have failed, there are two radical solutions: factory reset or Fastboot full flashing. Resetting will help if the problem is caused: 🔄 Corruption of system files. 📱 Conflicts of user data. 🔒 Wrong settings. MIUI. How to Reset: Make a Data Backup Through Settings → System system → Backup. Go to Settings. → System system → Resetting settings → Delete all data. Confirm the action and wait for the reboot. If the reset didn't work, you'll have to refashion the phone through Fastboot. This will delete all data, but return the system to "clean" state. Instruction: Download the official firmware for your model from the Xiaomi Firmware Updater site. Unpack the archive and install the Mi Flash Tool. Turn off the phone and press Volume Down. + Power to log in to Fastboot. Connect your phone to your PC and run the firmware through the Mi Flash Tool (select clean all). NFC If it doesn't work after flashing it. NFC still not working, check: 1. firmware compatibility with the region (for example, on the Redmi Note 10 Pro, Chinese firmware can block the NFC for Global models). 2. Integrity of firmware files (download archive again). 3. Bootloader version (some models require unlocking). If nothing helps, it's a hardware problem (see section 3). After flashing it, be sure: Update the system to the latest version via Settings → Update system. Reset network settings (Settings) → System system → Resetting settings → Reset network settings. Check the work NFC with different labels (bank card, transport card, NFC-7. Alternative solutions and temporary workarounds If the problem cannot be fixed, you can use temporary solutions to at least partially return the functionality NFC. Ways of circumvention: 💳 Use alternative payment apps (such as Samsung Pay via emulation or Apple Pay on another device). 🔄 Set up automatic switching on NFC via Tasker or MacroDroid (trigger – unlock the screen). 📱 Buy the outside. NFC-adapter (e.g, ACR122U) And plug it in. USB-C (work POCO F3, Redmi K40). 🛠️ Enable the Developer Mode and Activate NFC Debug (sometimes helps stabilize the module) How to turn on NFC Debug: Activate Developer Mode: Settings → The phone. → Version. MIUI (press 7 Go to Settings. → Additionally. → For developers, find an option. NFC Debug and turn it on. Reboot your phone. If you use Google Pay, try: Delete and re-add the card. Turn off Quick Pay in the app settings. Use Mi Pay instead of Google Pay (sometimes more stable). 💡If NFC It only turns off when you pay -- the problem is more like a banking app or security settings. Check permissions and updates for Google Pay/Mi Pay. FAQ: Frequent questions on NFC Xiaomi Why NFC Does Xiaomi only work after a reboot? This is a typical sign of a firmware conflict or incorrect battery optimization. NFC-Reset the network settings, update the firmware to the latest version. If it doesn't work, check the antenna (see section) 3). Can I get it fixed? NFC Yes, if the problem is: 🔧 The antenna plume - it can be soldered or replaced (the cost of the plume - from 300 ruble.). 📱 Contacts - clean them with alcohol. 🔄 Firmware, run your phone through the Fastboot if the controller is damaged. NFC (for example, NXP PN548) — You will need a soldering station and experience with microelectronics. NFC It stopped working after the screen was changed. What do we do? It's likely that the plume was damaged when the display was replaced. NFC-antenna or disconnected connector on the motherboard. Solutions: Disassemble the phone and check the antenna connection. If the antenna is built into the screen (as in the Xiaomi Mix 4), you will need to replace the display module with the antenna. Check the integrity of the contacts on the board (possibly oxidized after repair). How to check whether it works NFC Xiaomi? How to check: 💳 Put your phone to your bank card and it should sound or vibration. 📱 Install the app NFC Tools and try to count any label. 🔄 Enter the code ##4636## → choose NFC → If the module is not defined even in the service menu, it's a hardware problem. NFC? Yes, if: 🔧 You have excluded all programmatic reasons (see sections 1-4). 📱 Phone guarantee (repair will be free of charge). 🛠️ You have no experience in soldering (controller damage) NFC It can also disable other modules). The average cost of diagnosis in the service is 500-1000 rubles, repairs - 1500-3000 rubles (depending on the model).