How to use it NFC Xiaomi Redmi Note 9 Pro: from payments to smart home

Xiaomi Redmi Note 9 Pro is one of the few budget smartphones of 2020, received a module NFC (Near Field Communication: This technology allows not only smartphone payments, but also automation of routine tasks, data exchange and smart device management. NFC at full capacity – either due to ignorance of the possibilities or due to problems with setting up.

In this article, we will discuss all the ways of using NFC on the Redmi Note 9 Pro (including Global, India and China versions) MIUI 14/15. You will learn how to set up contactless payments through Google Pay, Mi Pay and SberPay, create automation with the help of NFC-Tags and solve common problems like errors «NFC Not supported" or not included in the menu. MIUI, allowable NFC even without root rights.

What is it? NFC Why you need it in the Xiaomi Note 9 Pro

Technology NFC (Near Field Communication is a short-range wireless protocol (up to 10 cm) operating at 13.56 MHz. The Redmi Note 9 Pro uses a chip. NXP PN54T, supportive:

• 💳 Contactless payments (Google Pay, Mi Pay, Apple Pay via emulation)
• 🔗 Data transfer (contacts, links, files via Android Beam)
• 🏠 Smart home management (compatible with Xiaomi Home, Aqara, Philips Hue)
• 🔄 Automation of tasks (NFC-script-startup)
• 🚇 Transport cards (emulation MetroCard, Troika - with restrictions)

Main advantage NFC In front of Bluetooth or Wi-Fi, you have an instant connection without a password and minimal power consumption, for example, to pay for a purchase, you just need to hold your smartphone to the terminal for 1-2 seconds, whereas Bluetooth requires pre-pairing. Redmi Note 9 Pro supports passive and active modes:

• 📱 Active – the smartphone itself generates the field (for example, when paying for the service).
• 📌 Passive – the smartphone reads data from a tag or card (for example, when opening a door).

Important: Redmi Note 9 Pro does not have hardware support HCE (Host Card Emulation for all credit cards, so some applications (e.g. SberBank Online) may not work with NFC-We will explain this in more detail in the section on setting up payments.

How to turn it on NFC Xiaomi Redmi Note 9 Pro: step-by-step instructions

By default. NFC Redmi Note 9 Pro is disabled to save battery life:

1. Open Settings → Connection and Sharing.
2. Slip on the NFC item (if not, see the section “What to do if NFC is not on the menu”).
3. Move the slider to the on position.
4. Select mode: Transport card for emulation of travel cards (not in all regions); Emulation card for contactless payments; Read only for reading labels.

After activation, a button will be added to the Quick Settings panel. NFC. To speed up access:

• 🔧 Swipe down from the top edge of the screen to open the curtain.
• 📍 Find the badge. NFC (usually hidden under the»).
• 🖱️ Press the icon and drag it to the visible area.

Problem: If, after inclusion, NFC The smartphone does not respond to tags or terminals, check:

• 🔋 Battery level (at <5% NFC can be automatically switched off).
• 🛡️ A cover with metal elements (they shield the signal).
• 📱 Version MIUI (There were bugs in the old firmware NFC-chip NXP PN54T).

⚠️ Note: Some of the firmware (especially custom) NFC It may conflict with Double-Tap to Wake Up. If payments fail, turn off this option in Settings → Lock screen.

Configure contactless payments via NFC

Principal application NFC Redmi Note 9 Pro — payment for purchases with a smartphone:

*Apple Pay does not officially support Android, but some banks (for example, Tinkoff) allow you to link the card to Google Pay and use it for payment through the Internet. NFC Xiaomi.

Instructions for setting up Google Pay:

1. Download Google Pay from the Play Market.
2. Open the app and tap Add a map.
3. Scan the map or enter the data manually.
4. Confirm the binding via SMS or push notification from the bank.
5. Install Google Pay as the default payment app in Settings → NFC → Emulation of the map.

Important: to pay more than 1000 ₽ You will need to unlock the smartphone (print, PIN This is a requirement of banks, not a limitation of Xiaomi.

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If the terminal does not accept payment the first time, try to bring the smartphone to the top of the terminal - there is an antenna. NFC. Also make sure the screen is unlocked (some terminals require confirmation).

⚠️ VTB and Alfa-Bank Banks may block NFC-payments if the smartphone has root installed or unlocked the bootloader, in which case you have to return the device to the stock state.

Use of the NFC-tags

One of the most useful functions NFC — Automating routines with tags, for example, you can:

• 🎵 Turn on night mode and start the player when touching the label on the bedside table.
• 🚗 Activate the navigator and connect the Bluetooth headset when placing the smartphone in the holder in the car.
• 🏢 Turn off mobile internet and turn on Wi-Fi when entering the office.

This will require:

• 🏷️ NFC-tags (costs from 50) ₽ All of them are sold on AliExpress or Xiaomi Store).
• 📱 Label application (e.g, NFC Tools or MIFARE Classic Tool).

Step-by-step instructions for creating a label:

1. Open NFC Tools and select Write → Add a record.
2. Specify the action (e.g. Wi-Fi → Connect to the network).
3. Enter the network information (name and password).
4. Bring the tag to the back cover of the smartphone (antenna) NFC near-camera).
5. Click Record and wait for confirmation.

Now, when you touch the tag, the smartphone will automatically connect to Wi-Fi. Similarly, you can configure:

• 📞 Calling a certain number.
• 📝 Opening of a note or document.
• 🔊 Change in volume or sound profile.

Managing a Smart Home through NFC

Redmi Note 9 Pro can act as a remote control for smart home devices with support NFC. For example:

• 💡 Yeelight lamps – switching on/off or changing color.
• 🚪 Aqara door locks – unlock when touched.
• 🌡️ Xiaomi thermostats – switching heating modes.

How to set up:

1. Install the Mi Home app.
2. Add smart home devices to the app (via Add Device) → NFC).
3. For automatic control, create a script: Go to Profile → Automation → Add. Choose a trigger. NFC-Specify the action (e.g., Turn on the lamp).

Example: if you attach NFC-tag to the front door, when touching the smartphone you can automatically turn on the light, start the camera and send a notification of your return home.

⚠️ Note: Some devices (such as the Xiaomi Door Lock) require firmware updates to work with the device. NFC. Check the relevance of the software in Mi Home.

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NFC In a smart home, it is convenient for quick action, but does not replace full automation via Wi-Fi or Zigbee. Use tags for scenarios where speed is important (for example, opening a door or turning on emergency lights).

Emulation of transport cards: does it work on the Redmi Note 9 Pro

Many users want to use the Redmi Note 9 Pro instead of a ticket (for example, Troika or Arrow).

• ✅ Support: Smartphone can emulate transport cards, but only if they are based on the MIFARE Classical or MIFARE Ultralight.
• ❌ Most Russian transport cards (including Troika) use MIFARE DESFire, which the Redmi Note 9 Pro does not support at the hardware level.

A workaround: some enthusiasts manage to record a dump card on a smartphone through Magisk and the module MIFARE Classic Tool, but this is:

• 🔓 Requires an unlocked bootloader and root rights.
• ⚠️ This may result in the card being blocked by the transport company.
• 🔄 It is unstable (terminals may not read the emulated card).

If you are critically important to emulate the pass, consider smartphones with full support MIFARE DESFire, for example:

• Xiaomi Mi 11 (chip) NXP PN80T).
• Samsung Galaxy S21+.
• Huawei P40 Pro.

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In Moscow and St. Petersburg, you can use SberPei for subway and ground transportation, link the Mir card to Google Pay and choose it as your primary payment method. NFC-setting.

Solving problems with NFC Xiaomi Redmi Note 9 Pro

If NFC is not working or is not working properly, check the following points:

If NFC missing after update MIUI:

1. Check the firmware version in Settings → About the phone.
2. If the version MIUI 12.5 And below -- upgrade to MIUI 14/15 through settings → Updating the system.
3. If the problem persists, reset the network settings (Settings) → System system → Additionally. → Resetting the network).

Reset NFC-cache (advanced method):

1. Enable Developer Mode: Go to Settings → About Phone and tap 7 times on the MIUI Version.


2. Return to Settings → Additional → For developers.




3. Find Do Not Save Actions and disable this option.




4. Reboot the smartphone.

⚠️ Note: Some custom firmware (e.g. Pixel Experience) NFC It may not work due to the lack of proprietary drivers for the chip. NXP PN54T. In this case, go back to the official MIUI.

FAQ: Frequent questions on NFC Xiaomi Redmi Note 9 Pro