NFC in the smartphone Xiaomi Redmi Note 9: full instructions for setting up applications and functions

Chip. NFC Xiaomi Redmi Note 9 offers the possibility of contactless payments, fast file transfer and automation of tasks through smart tags. However, many users face problems when first set up: the module does not turn on, applications do not see the chip, or bank cards are not tied. In this article, we will analyze all the nuances - from checking hardware support to fine-tuning Google Pay, Mi Pay and third-party NFC-tool.

The Redmi Note 9 (codename merlin) is a feature of the NFC-The chip is not present in all versions of the device, for example, the global version of the Redmi Note. 9S (model M2003J15SS) It is not a module, whereas European and Chinese versions (M2003J15SC) Before you spend time setting up, make sure your smartphone is equipped with it. NFC — We will tell you about this in the first section.

In the article you will find:

• 🔍 How to check for availability NFC In your version of Redmi Note 9 (including hidden methods)
• 💳 Google Pay, Mi Pay and SberPay with regional restrictions
• 📱 List of best lists NFC-applications for automation, transportation and data exchange
• ⚠️ Common errors and their solutions (e.g, "NFC not activated after the update MIUI")

1.Verify NFC support in Xiaomi Redmi Note 9

Before you set up apps, make sure your smartphone is physically equipped. NFC-In the Redmi Note 9, the module is only present in certain modifications:

• 📌 Supported models: M2003J15SC (China), M2003J15SG (Global, but not all parties), M2003J15SI (India).
• ❌ No NFC: M2003J15SS (Redmi Note 9S), Most devices for the markets of Africa and Latin America.

Check the presence of the module can be in three ways:

1. Through settings: go to Settings → Connection and Sharing → NFC. If there is no point, there is no chip.
2. Through code: type in the phone app ##4636##, select Phone Information and find the NFC string. No string means no module.
3. Physically: Disassemble your smartphone (at your own risk!) – the NFC chip is located under the back cover next to the wireless charging coil (if any).

⚠️ Note: If you bought the Redmi Note 9 on the secondary market, check the model through Settings → The phone. → Model.Sellers sometimes give out Notes. 9S Note 9, and the difference in support NFC critically.

2. NFC Activation and Basic Setup

If the chip is present, turn it on through system settings:

1. Open Settings → Connection and Sharing.
2. Slip on NFC.
3. Move the slider to the "On" position.
4. (Optional) Turn on Android Beam to transfer files (it’s outdated in newer versions of Android, but it may come in handy).

After activation, check the operation of the module:

• 📱 Put the phone to the other one. NFC-a device (e.g., a payment terminal or a tag) should be sounded or notified.
• 🔄 If there is no reaction, restart your smartphone and try again.

Make sure that NFC is enabled in the settings

Update MIUI to the latest version

Check the compatibility of your bank card with Google Pay/Mi Pay

Disable VPN (can block geo-dependent services)

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In the Redmi Note 9 on MIUI 12/13/14, there is a feature: after the system update, NFC can be reset to a switched-off state. To avoid this, add the NFC shortcut to the notification panel:

1. Swipe down from the top edge of the screen to open the notification bar.
2. Slap the icon. ⚙️ ("Edit").
3. Find the NFC tile and drag it to the active area.

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If NFC doesn't turn on after the MIUI update, reset the network settings: Settings → System → Settings Reset → Resetting Wi-Fi, mobile network and Bluetooth settings. This often solves the problem without completely resetting the phone.

3.Configuring contactless payments

Redmi Note 9 supports three main payment methods via NFC:

Google Pay (for international maps)

Instructions for Visa/Mastercard cards:

1. Download Google Pay from the Play Market.
2. Open the app and press Start.
3. Add the card via Add the card → Credit or debit card.
4. Scan the map or enter the data manually.
5. Confirm the addition via SMS from the bank.

Important: Google Pay does not work in all countries, for example, in Russia, the service is blocked, but cards of Russian banks (Tinkoff, Alfa-Bank) can be linked via Mir Pay or SberPay.

3.2. Mi Pay (for Chinese UnionPay cards)

This is Xiaomi’s proprietary solution for UnionPay cards:

1. Download Mi Pay from GetApps (branded store Xiaomi).
2. Register with your phone number (you will need a Chinese number for full activation).
3. Link the UnionPay card through Add the card.

⚠️ Mi Pay requires Chinese payment SIM-Payment card, without which functionality will be limited, in Russia and Europe, the service is almost useless.

3.3. SberPay and Mir Pay (for Russian users)

Alternative to Google Pay for maps of the world:

• 💳 Install the application Sberbank Online or MIR Pay.
• 📲 Go to Contactless Payments and follow the instructions.
• 🔄 Redmi Note 9 may require manual adjustment HCE (Host Card Emulation in Developer.

Google Pay

SberPay/Mir Pay

Mi Pay

Other (write in the comments)

I do not use contactless payments.-->

4.Using NFC for Automation and Labels

NFC-tags allow you to start actions on your phone with a single touch, for example, touching a tag on your desktop can be a very simple way to do it:

• 🔊 Put on the silent mode.
• 📶 Connect to Wi-Fi.
• 🎵 Launch a playlist on Spotify.

To work with labels, install one of the applications:

• 📌 Trigger supports complex scenarios (IFTTT-similar).
• 📌 NFC Tools – a simple interface for recording labels.
• 📌 Automate – for advanced users (requires scripting skills).

Instructions for marking:

1. Buy the empty ones. NFC-tags (e.g., labels, NTAG213 or NTAG215).
2. Open NFC Tools and select Write.
3. Select an action (such as Open URL or Enable Bluetooth).
4. Put the phone to the tag, the data will be recorded.

There is a limitation in Redmi Note 9: tag writing apps may not see the chip if the system has power saving mode on for them. Add NFC Tools to battery exceptions: Settings → Battery → Application Selection → NFC Tools → No Limits.

5. Data transmission via NFC (Android Beam)

Although Android Beam has been officially removed from new versions of Android, Redmi Note 9 on MIUI 12 can enable it through hidden settings:

1. Activate Developer Mode: Go to Settings → About Phone and tap the MIUI version 7 times.
2. Back to Settings → Additionally. → For developers.
3. Find the option to Enable Android Beam and activate it.

How to transfer the file:

1. Open the file (photo, contact, link).
2. Bring the Redmi Note 9 to another NFC-spin-to-side.
3. Wait for the beep - the transmission will start automatically.

⚠️ Note: Android Beam only works between Android devices 4.0–9.0. On Android phones. 10+ The feature is replaced by Fast Share (formerly Nearby Share) which uses the same function. Bluetooth/Wi-Fi Direct, not NFC.

6. Common Problems and Their Solutions

Redmi Note 9 users often face the following errors:

If the NFC has stopped working after the MIUI update:

1. Check the firmware version in Settings → About Phone → MIUI version.
2. If the version is newer than 12.5.4, roll back to stable via Fastboot (instructions on xiaomi.eu).
3. Alternatively, install custom Recovery (TWRP) and run the NFC module separately.

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If the NFC doesn't work after all the manipulations, check the integrity of the chip antenna. In Redmi Note 9, it often departs after falling or disassembling the phone.

7. Alternative ways to use NFC

In addition to payments and tags, the NFC in Redmi Note 9 can be used to:

• 🚇 Travel fees: in Moscow and St. Petersburg works with Troika via Metro Moscow or SberPey.
• 🔑 Key Emulations: Applications Like NFC ReTag allows you to copy intercom keys (legality depends on local law!).
• 🎮 Gaming controller connections: some gamepads (e.g, 8BitDo) maintain conjugation through NFC.

Example of setting up a Troika:

1. Download the Metro Moscow app.
2. Link the card Troika in the section Transport maps.
3. Turn on the NFC and hold the phone to the turnstile.

FAQ: Frequent questions about NFC in Redmi Note 9