Why Xiaomi Redmi Note 8 Pro is not working NFC: all causes and solutions

Xiaomi Redmi Note 8 Pro is one of the most popular mid-range smartphones, released in 2019. Despite its age, the device is still actively used thanks to the powerful processor Mediatek Helio G90T, But many owners have a problem with this: the module. NFC stops working - no purchases are paid, no labels are read, and in the settings the function is either absent or inactive.

The causes can be software-based (firmware failure, services disabled) or hardware-based (antenna or controller damage), and in this article we will look at all possible scenarios, including the rare cases where the problem lies in regional firmware or conflict with banking applications. You will also learn how to diagnose a malfunction and return it. NFC Life without going to a service center.

1. Checking the basic settings NFC On the Redmi Note 8 Pro

Before you sin on hardware breakdowns, make sure the module is activated correctly in the system. On the Redmi Note 8 Pro, the path to settings is to be followed. NFC It may vary depending on the version MIUI:

• 📱 MIUI 12-14: Settings → Connections and sharing → NFC
• 🔄 MIUI 11 and below: Settings → More. → Wireless networks → NFC
• 🔍 Quick access: Swipe down the notification bar and check for an icon NFC (If it is not, add manually through Edit icons).

If the switch NFC gray and inactive, this may indicate:

• ⚠️ Lack of support in your firmware version (for example, on custom builds).
• 🔧 Hardware locking (damage to antenna or controller).
• 📴 Conflict with SIM-map (on some firmware) NFC slot-bound SIM1).

⚠️ Note: Redmi Note 8 Pro Module NFC It's built into the top of the case (near the speaker). If you dropped your phone recently or changed the screen, the antenna could have moved away from the board.

Programmatic causes: failures MIUI Application conflicts

60% of cases NFC It doesn't work because of software errors. Let's look at typical scenarios:

Resetting settings NFC

Sometimes you just have to reset the module to the factory settings.

1. Go to Settings → Applications → Application Management.
2. Find it. NFC Service (or NfcNci in the list of system applications).
3. Click Warehouse → Clear the data and Clear the cache.
4. Reboot the phone.

2.2 Conflict with banking applications

Apps like SberBank Online, Google Pay or Mir Pay can be blocked NFC, if:

• 💳 Pirated version of the banking application.
• 🔒 The phone has unlocked the bootloader (bootloader).
• 📱 Smartphone is rooted (there are superuser rights).

Decision:

• Remove the banking application and install it again from the official store.
• Check SafetyNet status through the SafetyNet Test app (if the test is not passed, NFC may be blocked).

Check for NFC in the settings

Clear the cache and module data NFC

Remove/Reinstall banking applications

Update MIUI to the latest version

Check the SafetyNet status-->

Regional firmware restrictions

On the Chinese versions. MIUI (for example, CN) module NFC It is often disabled at the software level, even if the hardware is in good working order, due to the fact that other contactless payment systems are popular in China (for example, Alipay via Alipay). QR-code).

Decisions:

• 🌍 Install a global firmware (for example, miui_GLOBAL) via Fastboot or Recovery.
• 🔧 Use the patch. NFC Enabler to unlock the function (requires an unlocked bootloader).

3. Hardware malfunctions: antenna, controller, battery

If the software methods didn't work, the problem is the hardware. The Redmi Note 8 Pro most often fails:

3.1 Damage NFC-antennae

antenna NFC It's located under the top of the phone (near the speaker), and it can get damaged when you're on the phone:

• 💥 A hit or fall (especially on the top edge).
• 🔧 Disassembly (for example, when changing the screen).
• 🌡️ Overheating (if the phone was lying in the sun for a long time or near a heat source).

How to check:

• Bring the phone to another device with NFC (If you don't have a reaction, the antenna is faulty.
• Light a flashlight under the upper cover: if you see the detachment of the plume - repair is required.

Controller malfunction NFC

Controller NXP PN547 (or similar) is responsible for signal processing NFC. Its failure is unlikely, but possible with:

• ⚡ Short circuit (for example, after getting moisture).
• 🔋 Incorrect charging (use of uncertified chargers).
• 🛠️ Failure to repair (damage during soldering).

Diagnosis:

• Connect your phone to your PC and check logs through ADB: adb logcat | grep -i If there are errors in the logs such as NfcService: Failed to initialize, the controller is defective.
• Try flashing your phone to factory firmware through the Mi Flash Tool. NFC Not working, the problem is in the iron.

⚠️ Note: Replacement of the controller NFC demand BGA-Rations and specialized equipment. At home, repair is almost impossible - contact the service.

Effect of the battery on operation NFC

Few people know, but a bloated or worn-out battery can put pressure on the motherboard, causing a loss of contact with the motherboard. NFC-Symptoms of the antenna:

• 🔋 The phone quickly discharges and turns off at 20-30% charge.
• 📶 Poorly catches the network or Wi-Fi (due to pressure on antennas).
• 🔄 NFC It works periodically (it appears, then disappears).

Decision:

• Check the battery for bloating (put the phone on a flat surface and spin - if it crumbs, the battery is inflated).
• Replace the battery with the original (article: MB-J31 For the Redmi Note 8 Pro).

💡

If NFC stopped working after the battery was replaced, check if the new battery is touching the antenna plume, sometimes just bend the connector slightly to restore contact.

4.Diagnostics through engineering menu and test teams

For a deep inspection NFC You can use hidden tests and ADB-team.

Engineering menu (CIT)

To open the test NFC:

1. Dial in the dialer: ##36446337##
2. Choose. NFC Test (if no point – your firmware does not support the test).
3. Put the phone to the other one. NFC-If the test shows Fail, the problem is the hardware.

4.2. Verification through ADB

Connect your phone to your PC and execute the commands:

adb shell


su




service call nfc 5

If you receive Result: Parcel(00000000000) NFC physically does not.

To check for contactless payment support:

adb shell dumpsys nfc


grep "mPaymentSupported"

If the value is false, your firmware does not support payments through NFC (I need to ask you again).

💡

If the engineering test shows an error NFC: Chip not found, which means that the controller is completely out of order.

5. Regional features: why NFC You may not be working in your country.

Functionality NFC The Redmi Note 8 Pro depends on the firmware region and supported standards:

• 🇷🇺 In Russia. NFC It should support Mir Pay and Google Pay, but this is blocked on Chinese firmware.
• 🇪🇺 Support is mandatory in Europe NFC-A/B (ISO 14443) credit card.
• 🇮🇳 In India. NFC often disabled due to popularity UPI-payment.

How to check compatibility:

1. Install the NFC Tools app from Google Play.
2. Run a tag scan. If the app can't even see the standard tags, the problem is the firmware.
3. Try paying with a linked card on Google Pay, and if it says "Device not supported" you need global firmware.

6. Alternative uses NFC, if the module is not working

Restore NFC Failed, you can use the workaround solutions:

• 💳 Bank cards with a chip: pay by inserting the card into the terminal.
• 📱 QR-codes: many banks (Sberbank, Tinkoff) support payment through scanning QR.
• 🔄 Outside NFC-module: connect through USB-C adapter (e.g, ACR1255U).
• 🔗 Bluetooth LE: Some tags and devices (such as smart locks) support alternative connectivity.

For owners of Redmi Note 8 Pro with non-functional NFC We recommend:

• Use Google Pay with virtual cards (if the firmware supports).
• Install PayPal or Revolut for contactless payments via QR.
• When paying in stores, ask the cashier to enter the card number manually.

💡

If NFC Your Redmi Note 8 Pro is not repairable, consider buying a low-cost one. NFC-key fob (for example, Xiaomi Mi Band with payment support) or smart watches with NFC.

FAQ: Frequent questions about NFC on Redmi Note 8 Pro