How to connect NFC to Xiaomi Redmi 9: from checking the chip to paying with your phone

NFC (Near Field Communication) technology turns your Xiaomi Redmi 9 into a versatile tool, from contactless payments to instant file transfers. However, many owners face a problem: there is no NFC option in the settings, or the module refuses to work after an update. In this article, we will discuss all the activation methods, including hidden MIUI settings, checking hardware support and solving typical errors.

It is important to understand that not all versions of Redmi 9 are equipped with the same equipment. NFC-So, for example, a model. M2003J15SC (The global version is not available, but M2004J19C (It supports technology in China, and we'll show you how to check for a module without disassembling your phone, and what to do if you're a mobile phone user. NFC You'll also learn how to tie up bank cards, set up transport apps, and even use your phone instead of your door key.

1.Verify NFC support on Xiaomi Redmi 9

Before you try to turn on NFC, make sure your Redmi 9 is equipped with it. The manufacturer often releases different versions of the same model with different hardware.

• 🔍 By phone model: Go to Settings → The phone. → Model if your machine has an index. M2004J19C, M2004J19G or M2004J19I — NFC Models are available. M2003J15SC and M2003J15SS module-free.
• 📦 On the box: On the sticker with the serial number, look for the inscription "NFC" contactless pictogram.
• 🔧 Enter the code ##4636## in the phone application, select "Phone Information" and scroll to the block NFC. If it is not, the module is not physically.

Attention! Some vendors are deliberately misleading by specifying NFC in the specs for all versions of Redmi 9. If you bought a phone in 2020-2021, the probability of not having a module is ~60%. For a precise check, use the CPU-Z app (Sensors section) or NFC Check from Google Play.

2. How to enable NFC in MIUI settings

If your Redmi 9 supports NFC, it will take less than a minute to activate.

1. Open the settings (cog icon).
2. Go to Connect and Share (or Wireless Networks in older versions of MIUI).
3. Slip on NFC (may be in the submenu Additional).
4. Move the slider to the position VL.
5. Select the mode of operation: 💳 Card: for emulation of bank cards (Google Pay, SberPay). 📱 Reading/Write: for reading labels and sharing data. 🔑 Card: for use as a key (e.g. in smart locks).

On Redmi 9 with MIUI 12 and below, the NFC can be hidden in Settings → Additional → Wireless → More. If you don’t find it, upgrade to MIUI 13/14, where the menu is simplified.

3. setting up contactless payments (Google Pay, SberPay)

Once NFC is activated, you can link your bank cards.

1. Install the Google Pay app (or SberPay for Sberbank cards) from Google Play.
2. Open the app and log in through your Google account.
3. Click Add the card and scan it or enter the data manually.
4. Confirm the binding via SMS or push notification from the bank.
5. Go back to the NFC settings and select Default Payment → Google Pay.

4. Problem Solving: NFC is not turned on or does not work

If after all the manipulations, the NFC refuses to work, use this diagnostic table:

To reset NFC settings:

1. Go to Settings → Applications → Application Management.
2. Find it. NFC-Service (or NfcService).
3. Click Warehouse → Clear the cache and Clear the data.
4. Reboot the phone.

⚠️ If you're after the discharge NFC It stopped working at all, check if the system applications manually disabled. → Annexes → Permits → Autostart and enable autostart for NFC-Service and Google Play Services.

5. Alternative ways to use NFC

The NFC on Redmi 9 isn't just for payments, but here are 5 non-obvious scenarios:

• 🔑 Smart locks: Set your phone as a doorlock key (like Mi Smart Door Lock). To do this, download the lock manufacturer's app and follow the binding instructions.
• 📲 Fast file transfer: Install Android Beam (on older versions of Android) or use tags NFC Automatically send photos/contacts when touched.
• 🚗 Car tags: Attach NFC-sticker to the dashboard so that when touching the phone automatically switches on Bluetooth, starts the navigator or opens the garage.
• 🎫 Transport cards: In Moscow and St. Petersburg, you can tie Troika or Arrow through the My Pass (required) application MIUI 13+).
• 🏠 Smart Home: Set up automation in Mi Home to NFC-The tag at the door included lights, air conditioning or a robot vacuum cleaner.

Preventive advice: To prolong life NFC-module, avoid:

• 🧲 Contact with magnets (they can demagnetize the antenna).
• 🔥 Overheating of the phone (antenna) NFC located next to the processor).
• 💧 Moisture in the upper part of the shell (oxidation of contacts).

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If you use NFC frequently for payments, add a module inclusion shortcut to the home screen. To do this, keep your finger in the free screen space → Widgets → Settings → NFC.

6. Update firmware for proper NFC operation

Redmi 9 with MIUI 12 and below often encounters NFC bugs due to outdated drivers.

1. Check out the current version of MIUI in Settings → About Phone → MIUI version.
2. If the version is older than 12.5.4, update: 📲 By air (OTA): Settings → Updating the system → Check for updates. 💻 Manual: Download the firmware from the official Xiaomi website (select the region "Russia" for a stable version).

→ SIM-maps and mobile networks → Network reset

Important for custom firmware users! If you have installed LineageOS, Pixel Experience or other informal firmware, NFC may not work due to the lack of proprietary Xiaomi drivers.

1. Install the kernel with NFC support (look in 4PDA themes for your model).
2. Fly the NfcFix.zip patch through TWRP.

To check for vulnerabilities:

1. Download the NFC Tools app from Google Play.
2. Run scans for suspicious labels in public places (cafes, transportation).
3. If you find a label with unfamiliar content, do not interact with it.

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NFC on Redmi 9 works only at a distance of 4-5 cm If the terminal requires to hold the phone 10+ cm – it is a fake device for reading data!

FAQ: Frequent questions about NFC on Xiaomi Redmi 9