NFC Xiaomi Mi 9: full setup from A to Z (with secret chips)

Xiaomi Mi 9 is one of the first flagships of the brand with full support NFC, But many owners still don't use it to its full potential, and contactless payments, fast file transfers, smart tags for automation, all of these are available on your smartphone, but they need to be set up properly, unlike newer models like the Mi 11 or Redmi Note 12, where you can use the same smart tags. NFC activated in two clicks, on the Mi 9 there are nuances: from hidden settings MIUI Problems with compatibility with bank cards.

In this article you will find not only the basic instructions for inclusion. NFC, It also offers unique solutions for common errors (such as when the phone can’t see tags or payment terminals), as well as secret chips – how to use them. NFC We tested all the methods on the Mi 9 with firmware. MIUI 10–14, so the instructions are relevant even for custom assemblies.

What is it? NFC Xiaomi Mi 9 and why you need it

NFC (Near Field Communication in Xiaomi Mi 9 is a short-range contactless communication module, operating at 13.56 MHz and allowing data to be exchanged at a distance of up to 10 cm, NFC consumes a minimum amount of energy (about 0.1-0.3 mA in standby mode), making it ideal for the use of a single energy source:

• 💳 Contactless payments (Google Pay, SberPay, Mir Pay, etc.) – replaces a bank card.
• 📱 Android Beam – sending contacts, photos or links to another smartphone.
• 🏠 Smart Device Management – Linking NFC-tags to scenarios (for example, turning on the light when the phone is brought to the tag).
• 🔑 Identifications – office access, transport cards (like Troika in Moscow).

Mi 9 has a chip on it. NXP PN80T, which supports all modern standards NFC (ISO 14443, ISO However, there is a limitation: the Mi 9 is not compatible with Apple Pay (a hardware limitation of Android devices), but works with all other payment systems) NFC It can be blocked at the firmware level – we will talk about this in the section about errors.

Verification of support NFC Xiaomi Mi 9

Before you set up NFC, Make sure your Mi 9 does support this feature, even though all official versions of the smartphone are equipped with it. NFC-chip, there's nuances:

1. Check the labeling on the box: the original packaging should have a logo NFC (point-line).
2. Look at the Settings. → The phone. → Full specifications. In the "Wireless Networks" section, there should be a line NFC: Yes.
3. Use the verification code: type in the phone application ##4636##, go to Phone Information and find the item NFC.

⚠️ If you bought the Mi 9 in China or on AliExpress, chances are that you will be able to get the best of your life. NFC This is a regional restriction that would require a change of region to the payment system. MIUI or firmware of the global version.

Step-by-step adjustment NFC Xiaomi Mi 9

Now let's get to the practice. NFC There are two ways to use the Mi 9: through the notification panel or settings. We recommend using both methods for full control.

Method 1: Quickly turn on through the curtain

1. Swipe your finger down to open the notification panel.
2. Find the badge. NFC (It is usually hidden – click on “Edit” (pencil icon) and add it to active switches).
3. Put the icon on the button to activate the module, NFC included.

Method 2: Through the MIUI settings

1. Open Settings → Connections and Sharing → NFC.
2. Transfer the NFC slider to the "On" position.
3. Activate the Android Beam option (required for file transfer).
4. In the Payments section, select your preferred system (Google Pay, SberPay, etc.).

Included NFC in settings

Android Beam is activated (if you need to transfer files)

Added a bank card to the payment application

Compatibility with the labels (if used)

Updated firmware MIUI last-minute-->

After activation NFC We recommend that you check it with a test tag or another smartphone, for example, try to transfer the contact via Android Beam:

1. Open the contact in the Contacts app.
2. Bring the back of the Mi 9 to another phone (1-3 cm distance).
3. Wait for the beep to beep, the contact will be transmitted.

⚠️ Attention: If NFC It doesn't turn on or off immediately, check if the power saving mode is activated. MIUI There is a hidden setting that disables NFC low battery charge (30% or lower) To fix this, go to Settings → Battery → Energy saving regime → Settings → Shut down. NFC In the background and deactivate the option.

Contactless payments (Google Pay, SberPay, Mir Pay)

Main advantage NFC Xiaomi Mi 9 — the ability to pay for purchases with your phone, but there are a few pitfalls here, especially if you use the Chinese version of the smartphone.

Addition of a bank card

1. Install a payment system app (e.g. Google Pay from Google Play).
2. Open the app and click "Add map".
3. Scan the map or enter the data manually. SMS bank.
4. After adding the card, activate it as the main payment method.

Solving payment problems

If the terminal doesn’t see your Mi 9 when paying, try:

• 🔄 Reboot your phone – sometimes a module NFC «hanging».
• 📱 Remove and re-add the card in the payment application.
• 🛠️ Update MIUI — In the old versions of the firmware were bugs with HCE (Host Card Emulation).
• 🌐 Change the region to “Russia” or “Europe” (if you have Chinese firmware).

💡

If the terminal can’t see the phone, try holding the Mi 9 to the reader with the top part (where the antenna is located). NFC). In some cases, this solves the problem with connection.

Use of the NFC For file transfer (Android Beam)

Android Beam allows data to be exchanged between two Android devices without the Internet. On Xiaomi Mi 9, it works stable, but there is a limitation: the transfer speed does not exceed 400 Kb / s (for comparison, Bluetooth 5.0 gives up to 2 Mb / s), but Beam is convenient for fast sending:

• 📇 Contacts (vCard).
• 📷 Photos (up to 5MB).
• 🔗 Links to websites or applications.
• 🎵 Playlists (e.g. from YouTube Music).

How to transfer the file:

1. Open the file (for example, a photo in a gallery).
2. Bring the Mi 9 to another phone (screen to screen).
3. Wait for the sound signal and vibration – the transmission will begin automatically.
4. A notification of receipt will appear on the receiving device.

⚠️ Note: Android Beam only works between Android 4.0 devices+. If you can’t transfer the file, check if it’s turned on. NFC And beam on both phones, and make sure the screen is unlocked, and on the locked device, beam is not activated.

💡

Android Beam is not a replacement for Bluetooth or Wi-Fi Direct, but an add-on. Its main advantage is instantaneous connection without passwords, but for larger files, it is better to use other protocols.

Work with NFC-tagging and automation

One of the most useful but little-known functions NFC — Tags are small stickers or key fobs that can be programmed to do certain things when you hold a phone:

• 🚗 Turn on Bluetooth and start the navigator in the car.
• 🏡 Turn off Wi-Fi and activate Do Not Disturb at home.
• 🎧 Start Spotify and connect to the column.

To work with the labels on the Mi 9 you will need:

1. Buy NFC-tags (recommended) NTAG213 or NTAG215 — they are compatible with MIUI).
2. Install a programming application, for example: NFC Tools (simple interface). Trigger (for complex automations). Mi Home (if you use smart Xiaomi devices).

Write the command to the label and attach it in the right place (for example, on the door or dashboard of the car).

Example of setting up a tag to start the navigator:

1. Open up. NFC Tools and select "Write down».
2. Click "Add recording» → «Launch of the application».
3. Select Google Maps or Yandex.Navigator.
4. Put the phone to the tag, the data will be recorded.

💡

To make the tag work faster, attach it to a non-metallic surface. NFC, The phone may not read the tag the first time.

Typical errors NFC Xiaomi Mi 9 and its solutions

Even after the right setup NFC Mi 9 can crash. We've collected the most common problems and ways to fix them:

If none of the methods helped, try resetting the settings. NFC:

1. Go to Settings → Applications → Application Management.
2. Find it. NFC Service and click "Clear Cache» → «Reset the settings».
3. Reboot the phone.

One of the most useful hidden functions is the use of NFC If you have a backup electronic lock, you can unlock the doors. NFC (For example, Xiaomi Mi Smart Door Lock, you can use it:

1. Add the key to the Mi Home app.
2. Activate the option NFC Unlock in the lock settings.
3. Put the phone to the reader - the door will open without entering the code.

⚠️ Attention: When in use NFC To unlock doors or make payments, do not store your phone in a case with metal inserts. Metal blocks the signal and the reader may not work. Also avoid placing tags near magnets or sources of electromagnetic interference (for example, microwaves).

FAQ: Frequent questions about NFC on Xiaomi Mi 9