How to check the presence of NFC in the smartphone Xiaomi Redmi Note 9: all working methods

Why you need to check NFC in Redmi Note 9

NFC (Near Field Communication) technology has become an integral part of modern smartphones, allowing contactless payments, fast file transfers and interaction with smart devices. However, not all Xiaomi Redmi Note 9 models have this module – it all depends on the region of release and modification of the device. For example, European versions of the Redmi Note 9S and Redmi Note 9 Pro often come with NFC, while the base model of the Redmi Note 9 (especially for the Asian market) can do without it.

If you plan to use your phone to pay via Google Pay, Mi Pay, or connect to smart locks, it is important to make sure you have a chip in advance. In this article, we will discuss all the official and hidden ways to check the chip. NFC Redmi Note 9, including technical specification analysis, diagnostic codes and test applications. 4G and 5G, and also nuances of firmware that can hide the function even when it is physically present.

Method 1: Checking through phone settings

The easiest way is to search for the NFC option in the settings menu, but there are pitfalls: in some MIUI firmware, the item may be hidden or called differently.

1. Open the Settings app (cog icon).
2. Go to Connections and Sharing (or Wireless Networks in older versions of MIUI).
3. Scroll down and look for NFC or Contactless Payments.

If there is no option, it could mean:

• 📱 Physical absence of a chip is the most likely option for the base model of the Redmi Note 9 (codename merlin).
• 🔄 Hiding the feature of the firmware is relevant for the Chinese versions (Redmi Note 9) 4G chip-wise NXP PN54T, locked-in).
• 🔍 The other way is in the menu. MIUI 12+ NFC Sometimes they move to additional → Special facilities.

Update MIUI to the latest version

Check the firmware region (Global/EU/China)

Install a diagnostic application (NFC Tools)

Reset network settings (Settings → System → Reset)

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⚠️ Note: On some devices, the item NFC It only appears after insertion SIM-contactless card (e.g. Sberbank or Tinkoff) Try rebooting your phone with your card installed.

Method 2: Analysis of the technical specifications of the model

If you haven’t bought the phone yet or are in doubt about modifying it, check the specifications by codename or article. The Xiaomi Redmi Note 9 has several versions:

To find out the code name of your device:

1. Install the CPU-Z app from Google Play.
2. Open the Device tab and search for the Model bar (e.g., the M2003J15SC is the Redmi Note 9 Pro for India).
3. Check the article with the table above or find it on Kimovil's website.

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If CPU-Z has a line in Sensors that says "NFC" but it's not in the settings, it means the chip is physically present but has been disabled by the firmware. Try flashing the European version of MIUI.

Method 3: Use of diagnostic codes

Hidden engineering menus allow you to access low-level information about hardware components. The following commands are suitable for the Redmi Note 9:

#4636### → Testing → NFC
##284## → Testing the NFC module (NXP chips only)
##36446337## → Information about communication modules

Instructions:

1. Open the Phone app and enter one of the codes.
2. If nothing happens after the input, there is no NFC module.
3. If you open a menu with the words NFC Status: Enabled/Disabled, the chip is present.

⚠️ Warning: Some firmware has blocked engineering menus if the code is entered and the message "Connection problem or invalid" appears. MMI code, try it:

• 🔓 Unlock the bootloader through the official Xiaomi website.
• 📱 Install custom recovery (TWRP) and flash the modified firmware.
• 🔧 Use applications like MTK Engineering Mode (for MediaTek processors).

Yes, for payments.

Yes, for file transfer.

No, I don't know how to turn it on.

No, it's not in my model.

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Method 4: Test applications for testing NFC

If the previous methods failed, install specialized utilities that will not only show the presence of the chip, but also test its performance:

• 📱 NFC Tools – scans tags, shows the technical data of the chip (for example, UID type NXP/Mifare).
• 💳 NFC Check – Supports contactless payments (Google Pay, Mi Pay).
• 🔍 CPU-Z — In the Sensors tab, the presence of NFC-controller.
• 📡 RFID Tools – Tests reading/writing labels (useful for checking compatibility with smart locks).

How to use NFC Tools:

1. Download the app from Google Play.
2. Launch it and go to the Info tab.
3. If the screen says “NFC available” at the top of the screen, the chip is there and works.
4. Click Read and bring your phone to any NFC-tag (for example, a bank card or sticker).

⚠️ Note: On some devices, applications may show a false positive result if:

• 📵 The phone has an unoriginal battery without NFC-antennas (relevant after battery replacement).
• 🔌 No contact between antenna and motherboard (check after falls or disassembly).
• 🛠️ The chip is physically damaged (for example, after moisture is ingested).

Method 5: Physical check (disassembly of the phone)

If the software methods did not help, there is a visual inspection of the motherboard. NFC-The chip in the Redmi Note 9 is usually located next to the antenna module (under the back cover, battery:

1. Turn off the phone and remove the tray for SIM-map.
2. Carefully tuck the back cover with a plastic spatula (start at the corner next to the volume button).
3. Check the charge for a chip labeled NXP, PN54T, PN80T or SN100U.

📌 Indications of presence NFC:

• 🔧 Metal antenna in the form of a loop around the camera.
• 📌 A chip with an inscription NFC logo NXP.
• 🔗 Contacts from antenna to motherboard (usually gold colored).

⚠️ Warning: Disassembling the phone will void the warranty and may damage the plumes. If you are unsure of your skills, contact a service center. Alternatively, use an X-ray (some workshops offer this service for non-opening diagnostics).

1. Purchase of external NFC-Adapter (connected through the USB-C).

2. exchange phone to model with NFC (for example, Redmi Note 9S or POCO X3 NFC).

3.Use of alternative solutions (QR-Payment codes, Bluetooth for file transfer).-->

Redmi Note 9 compared to other models with NFC support

If you haven’t bought a phone yet and are choosing between different versions of the Redmi Note 9, check out the comparison table, which will help you avoid disappointment after buying:

💡 Advice: When buying from hand, be sure to check NFC Sellers often keep silent about regional differences in models:

• 📱 Show Google Pay with its card.
• 🔍 Launch. NFC Tools and scan any label.
• 📋 Provide a check or box with an article (for example, M2003J15SG — globalization NFC).

Frequent NFC Issues in Redmi Note 9 and Their Solutions

Even if you have an NFC chip in your phone, users often experience errors, and here are the typical scenarios and ways to fix them:

🔧 Advanced diagnosis: If NFC It stopped working after the update. MIUI, try:

1. Remove the firmware to the previous version via Fastboot.
2. Reset the settings to factory (Settings → About phone → Reset settings).
3. Install an alternative firmware (e.g. Pixel Experience or LineageOS).

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If NFC You only need it for payments, but it is not on the phone, consider contactless cards with support QR-codes (Sberbank, Tinkoff) or wearable devices (smart watches with a NFC, ring).

FAQ: Answers to Frequent Questions