How to use it NFC Xiaomi smartphone: from payments to smart tags

Technology NFC (Near Field Communication is no longer exotic — it's now embedded in most Xiaomi smartphones, from the budget Redmi to the flagship Xiaomi 14. But many owners still don't use its full potential. NFC Not only can you pay for your phone, but you can also automate routine tasks, exchange contacts, manage smart devices and even unlock doors.

In this guide, we will analyze all application scenarios. NFC On Xiaomi smartphones, from basic setup to advanced features, you’ll learn how to link a bank card, set up transport applications, create automation with smart tags, and also solve typical problems (for example, when you’re using a mobile phone or a mobile phone). NFC Not working after the update MIUI). We pay special attention to hidden opportunities. MIUI 14/15, which are not written in the official instructions, such as how to use NFC for quick Wi-Fi connection or start the "Do Not Disturb" mode".

It doesn't matter if you're a beginner or a seasoned user, there's something new here, like, did you know that with the help of a user, you can find something new. NFC Can you instantly transfer photos to another Xiaomi smartphone without the Internet? 13T Pro) support dual regime NFC So let's get this straight, we can work with payments and tags at the same time.

1. What is it? NFC Xiaomi smartphones and why you need them

NFC — This is a short-range wireless communication technology (up to 10 cm), which operates at a frequency of 13.56 MHz. NFC It's usually located at the top of the back (near the camera) or under the battery:

• 💳 Contactless payments via Google Pay, Mi Pay, SberPay and other services.
• 🚇 Payment for travel in the subway, buses and trains (supported cards "Troika", "Strelka", "Poprodnik" and others.).
• 🔗 Data transfer: contacts, links, photos between devices with NFC.
• 🏠 Smart home management: unlocking doors, turning on lights, running scripts in Mi Home.
• 📱 Automation by means of NFC-tags (for example, touching a label on a table includes a "Work" mode").

It is important to understand that NFC Xiaomi only works when the screen is unlocked (except for payments – double pressing of the power button is enough), data transfer speed is low (up to 424 kbit / s), but power consumption is minimal. For example, when paying with your phone, you consume less charge than when you turn on Bluetooth for 10 seconds.

Not all Xiaomi models are equipped with NFC — It is usually not in the most budgetary lines (for example, Redmi). A2 or POCO C50). To check the support, look at the characteristics of your model on the official website or use the command:

adb shell dumpsys nfc

If the answer is mIsNfcEnabled=True, so the chip NFC present and ready to work.

2. How to turn on and configure NFC on Xiaomi (step-by-step instructions)

Activation. NFC Xiaomi takes less than a minute on smartphones, but there are nuances depending on the version MIUI. Here's a universal algorithm:

1. Open Settings → Connections and Sharing → NFC.
2. Transfer the NFC slider to the "On" position.
3. Below, select the mode of operation: 📱 "Only reading cards – for reading tags and bank cards. 🔄 "Data sharing – for transferring files between devices (Android Beam). 💳 "Contactless payments for Google Pay and transport cards.

"Configuring contactless payments"

V MIUI 14/15 The "Quick Action" function was introduced for NFC: You can double-press the power button to call the wallet (even from a locked screen:

Settings → Lock screen → Quick actions → Contactless payments

If in the settings NFC If you don't have contactless payments, your model is not certified for payment systems (e.g. Redmi Note 11 for some regions:

After activation NFC Check it: Bring the phone to another device with NFC You're going to have to give a beep or a notification.

3. Contactless payments through NFC: Google Pay, Mi Pay, SberPay

Principal application NFC Xiaomi is about payments. Let's look at three popular services and their features on smartphones. MIUI.

To pay for the purchase:

1. Unlock your phone (or double-press the power button if you have speed set).
2. Bring the top of the smartphone to the terminal at a distance of 2-5 cm.
3. Wait for the sound signal or vibration – the payment has passed.

If the payment fails:

• ⚠️ Check that the terminal supports contactless payments (it should have a logo on it). NFC or PayPass).
• ⚠️ Make sure the purchase amount does not exceed the contactless payment limit (usually up to 5,000). ₽ without PIN-code).
• ⚠️ Restart your phone – sometimes the settings are confused NFC post-refresh MIUI.

💡

If the terminal doesn’t see your Xiaomi, try turning off the “Improving Location Accuracy” feature in the settings. NFC. In some cases, it is in conflict with payment systems.

4. Transport cards: how to tie the "Troika", "Arrow" and others

Xiaomi smartphones with NFC can replace transport cards in Moscow, St. Petersburg and other cities:

1. Installation of an official annex: 🚇 For Moscow: "Troika: transport map" (Play Market). 🚆 For MO: "Arrowhead". 🚌 For SPb: “Planeman".

Register and link a bank card for replenishment.

"Add to device"

Bring the phone to the validator in the subway / bus - the card is activated.

Important nuances:

• 📌 One device can store only one transport card (for example, or "Troika" or "Arrow").
• 📌 To travel, the phone must be unlocked (unlike payments).
• 📌 Some models (e.g. Xiaomi) 12T) Support offline balance-filling through NFC-terminal.

If the validator does not read the card:

⚠️ Attention: The problem may be in the region of smartphone purchase. Global versions of Xiaomi (marked Global) are sometimes incompatible with Russian transport systems. MIUI EU use a physical card.

To check the balance, you do not need to open the application - just bring the phone to the validator, and the amount will appear on the lock screen (if the function Show the balance on the locked screen in the settings is enabled). NFC).

5. Data transmission through NFC: contacts, photos, links

NFC Xiaomi allows you to instantly share data with other devices that support Android Beam (or its analogues:

• 📇 Pass the card (contact).
• 📸 Send a photo or video (up to 10 MB).
• 🔗 Share a link or text message.
• 🎵 Pass a song or playlist (via Spotify/YouTube Music).

Instructions for transmission:

1. Turn it on. NFC on both devices and select the "Data Exchange" mode".
2. Open the file you want to send (such as a photo in a gallery).
3. Bring the phones back to each other (chips) NFC).
4. On the screen will appear a notification "Touch to send" - confirm the transfer.

Limitations:

• 🚫 Low transfer speeds – large files (e.g. video) 4K) It is better to send via Wi-Fi Direct.
• 🚫 iPhone. NFC It only works for payments (Apple Pay), so data exchange is only possible between Android devices.
• 🚫 Some Xiaomi models (such as the Redmi Note 10 Pro) require additional fingerprint confirmation when transferring files.

To speed up the process, a shortcut can be created. NFC mainscreen:

Long press on the desktop → Widgets → NFC → Drag “Quick transfer”

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NFC-The transmission consumes 5 times less charge than Bluetooth, but only works at a distance of up to 4 cm.

6.Smart tags NFC: Automation of tasks on Xiaomi

One of the most useful functions NFC — It's a smart tag job (NFC-The tag is a small chip that can be programmed to perform actions when you touch a phone:

• 🔕 Touching the mark on the bedside table includes the "Do Not Disturb" mode and sets an alarm clock.
• 🚗 Attaching the phone to the tag in the car, the Navigator starts and the Bluetooth headset is connected.
• 🏠 On the mark at the front door, you can turn on Wi-Fi and open the smart home application.

To work with labels will need:

1. Buy NFC-tags (e.g., labels, NTAG213 or NTAG215 on AliExpress or in "Connected").
2. Install a programming application: NFC Tools (simple interface, suitable for beginners), Trigger (advanced automation). Mi Home (for integration with smart devices Xiaomi).

Wi-Fi: On-board. → Connect to "Home_Net"

Attach the label in a convenient place (on the refrigerator, table, keys).

Example of setting up a tag for fast Wi-Fi connection:

1. Open up. NFC Tools → "Write it down" → "Add a record".
2. Select "Wi-Fi" → Enter the network name and password.
3. Hold the phone to the tag and wait for the recording.

Now, when you touch the tag, the phone will automatically connect to this network.

⚠️ Attention: Tags NFC They can be overwritten accidentally if you bring another phone with the recording mode on to them. To avoid this, use overwriting protection tags (for example, use overwriting protection tags, NTAG216 password-wise).

V MIUI 15 has built-in tag support without third-party apps:

Settings → Special features → Quick actions → NFC- tags

7. NFC Smart Home: Managing Xiaomi Devices

If you have Xiaomi smart devices (lamps, sockets, robot vacuum cleaners), NFC You can use them to manage them without running the Mi Home app:

• 💡 Touching a mark on the wall turns on the light in the room.
• 🔌 The label on the desktop includes a socket to charge the laptop.
• 🤖 The tag at the door starts the vacuum cleaner in the hallway cleaning mode.

To set up:

1. Open Mi Home → Select the device → "Automation" → "NFC-trigger".
2. Hold the phone to the tag and select an action (such as "Lun the lamp").
3. Save the script.

Also. NFC You can use it to unlock smart locks (e.g. Xiaomi Mi Smart Door Lock:

1. Install the lock and add it to Mi Home.
2. In the lock settings, select "Add" NFC-map".
3. Hold your phone, it will become a virtual key.

Advantage over Bluetooth: NFC It works instantly (no need to wait for connection) and consumes a minimum charge.

If the lock is not responding to the phone:

• ⚠️ Check that the lock settings are on mode "NFC-unlock".
• ⚠️ Make sure your phone is unlocked (some models require fingerprint confirmation).
• ⚠️ Update the lock firmware through Mi Home.

8. Typical problems with NFC Xiaomi and their solutions

Even on flagship models Xiaomi sometimes there are failures in the work NFC. Let’s look at the most common problems and ways to fix them.

If NFC stopped working after the MIUI update, try:

1. Clear the app's cache "NFC": Settings → Annexes → Application management → NFC → Warehouse → Clear the cache
2. Reset the settings NFC: Settings → Connections and sharing → NFC → ⋮ → Reset the settings
3. Reverse the update (if the problem appears after the update): Settings → The phone. → Updating the system → ⋮ → Reverse the update

To diagnose hardware problems, enter the engineering code:

#4636## → Phone information → NFC check

If the test shows an error NFC hardware failure, which means chip damage – repairs at a service center will be required.

⚠️ Note: Some "repair" workshops offer "sweeping" NFC" 1,000 to 2,000 ₽. It's actually a chip. NFC It's not stitched, it can only be replaced. The official replacement at Xiaomi's service center will cost 2,500 to 4,000. ₽ (model-wise).

FAQ: Frequent questions about NFC in Xiaomi