How to check NFC on Xiaomi smartphone: from basic diagnostics to troubleshooting

Xiaomi’s NFC (Near Field Communication) technology has become an integral part of everyday operations, from contactless payments to smart device management. However, not everyone knows how to properly test it, especially if the module suddenly stopped responding or is out of order. In this article, we will examine not only standard diagnostic methods, but also hidden MIUI features that will help to identify problems at the hardware or software level.

It’s important to understand that NFC testing on Xiaomi is different from diagnostics on other brands because of the features of firmware and hardware implementation. For example, in the Redmi Note 12 Pro+ and POCO F5 models, the NFC module is integrated into the wireless charging antenna, which requires additional tests. We will look at everything from basic verification through settings to the use of engineering codes and third-party utilities.

1. Basic NFC verification via Xiaomi settings

The first and most obvious way to check if the module is on in the system settings, but even here there are pitfalls: in some versions of MIUI (especially on budget models), the NFC option can be hidden or disabled by default.

To find him:

• 📱 Open the Settings. → Connections and Sharing (on some models - Settings) → Wireless networks).
• 🔍 Scroll down to the section "NFC" (If there is no point, then your model does not support the technology).
• 🔄 Activate the switch. If it's gray and doesn't press, it's the first sign of hardware malfunction.

On Xiaomi 13 Pro and later, additional confirmation may be required via Security → NFC permissions where you need to allow access to payment systems. If the NFC indicator (usually in the notification panel) does not appear after turning on, move on to the next method.

2. Check through the notification panel and quick settings

A quick way to diagnose is to use the notification panel. On most Xiaomi devices, the NFC icon is displayed here only when the active module is present.

• 🔄 If the badge NFC is not available in quick settings, try adding it manually: swipe the panel down → press ⚙️ (Edit) → find "NFC" and drag it to the active area.
• 📵 On some firmware (for example, MIUI Global 14) the icon may not appear even when the module is running - it is a bug that is fixed by the update.
• ⚡ If there is an icon, but nothing happens when you press it, it may indicate a failure in the NfcService service.

Response test: Hold your smartphone to another NFC device (such as a credit card or tag) if the screen doesn't respond and there's no detection notification in the status bar, the module is either disabled at the system level or malfunctioning.

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On the POCO X5 Pro and Redmi K60, NFC may conflict with power saving mode. Before checking, turn off battery optimization for applications that use NFC (e.g. Google Pay).

3. Diagnostics through the engineering menu (codes ##)

Hidden engineering menus can be used to test the hardware in depth, a method that is suitable for advanced users, as it requires the input of special codes.

Instructions:

1. Open the Phone app and type in: ##4636## This will open the Testing menu.
2. Go to the Device Information tab and scroll to the "NFC" section.
3. If the partition is missing, your model doesn't support NFC at the hardware level. If it does, but Unavailable status, the module is faulty or disabled.

For more detailed diagnosis, use the code:

##2664##

He'll open the test menu. RF-A chip where the integrity of the antenna can be checked NFC. On Xiaomi models 12T Redmi Note 11 Pro+ 5G This code may not work due to manufacturer restrictions.

4. Testing with third-party applications

If the system methods don't give a clear answer, third-party utilities come to the rescue, not only checking the module's performance, but also testing the read/write speed, compatibility with different types of tags.

Top.-3 diagnostics:

• 📌 NFC Tools (Google Play) – scans tags, shows the technical data of the module, supports the recording of own tags.
• 🔧 NFC Check is a minimalist utility that checks for the chip and its basic functions.
• 💳 Google Pay – if the module works but payments don’t pass, the problem may be in the security settings or the banking app.

How to run the test:

1. Install NFC Tools and open it.
2. Click Reading and bring the phone to any NFC-tag (e.g. transport card or sticker).
3. If the tags are displayed, the module works. If there is an error "NFC not detected", the problem is at the driver or hardware level.

Make sure the module is enabled in the settings|Check for no physical damage to the back panel|Test with 2-3 different-mark|Update the firmware to the latest version|Reset your network settings (if you have a NFC does not detect devices)-->

5. Verification of the physical integrity of the NFC module

If the software methods didn’t help, it’s worth checking out the hardware. Xiaomi’s NFC module is usually located under the back cover, next to the wireless charging coil (if any), the damage may not be obvious, but there are indirect signs:

• 🔋 Cracks or bloating of the back panel at the top (where the antenna is) NFC).
• 📱 Falling your phone on a hard surface (especially if contactless payments stop working afterward).
• 🔌 Problems with wireless charging (on models where NFC and the Qi coil are combined).

For visual inspection:

1. Turn off the phone and remove the back cover (on models with a non-removable body – use a suction cup and a mediator).
2. Find a small black or silver board labeled NFC or PN547 (chip name).
3. Check the integrity of the contacts and the lack of oxidation, and if you see damage, the module needs to be replaced.

⚠️ Note: Xiaomi Mi 11 Ultra and POCO F4 GT antenna NFC It is embedded in a metal frame, and damage to the frame (e.g., after impact) can disable the module without visible traces on the board.

6. Solving Common NFC Problems on Xiaomi

If the module doesn't work but it's physically functional, the problem may lie in the software part.

For models on MediaTek (for example, Redmi Note 12) can help reset the settings of the radio module:

adb shell am broadcast -a android.intent.action.AIRPLANE_MODE --ez state true


adb shell am broadcast -a android.intent.action.AIRPLANE_MODE --ez state false

⚠️ Note: On smartphones with MIUI 14+ Resetting the radio module can lead to loss IMEI. Before executing commands, make a backup copy through Settings → The phone. → Backup.

7. When to contact the service center?

If all of these methods have not worked and NFC is still not working, it is likely a hardware problem.

• 🛠️ The module is not defined in the engineering menu (Status: Unavailable).
• 🔧 Visible damage to antenna or contacts on board.
• 📱 NFC stopped working after falling or getting moisture.
• 🔄 The module is defined but does not interact with any label (even after resetting the settings).

Cost of replacement NFC-Xiaomi official services range from 1,500 to 4,000 rubles depending on the model. On Redmi, the part is usually cheaper than on flagships (Xiaomi). 13T Before visiting the service, check whether the warranty is valid - some malfunctions (for example, factory defects of the antenna) are covered free of charge.

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If NFC stopped working after the firmware update, try to roll back to the previous version via the Mi Flash Tool. Often bugs are fixed in the next patches, but at the time of release may break the functionality.

FAQ: Frequent questions about NFC on Xiaomi