How to connect the card “Troika” to the phone Xiaomi via NFC: full instruction

Introduction: why tie the Troika to a smartphone

The Troika card has long been an integral part of everyday life for Muscovites and residents of the Moscow region. But carrying a separate plastic card is not always convenient - especially when you already have a smartphone in your pocket with support for contactless payments. Fortunately, modern Xiaomi devices (starting with models on Qualcomm Snapdragon 439 and later) allow you to emulate a transport card through an NFC chip, turning the phone into a full-fledged travel document.

In this article, we will not only discuss how to tie Troika to Xiaomi via NFC without losing balance and travel history, but also talk about the nuances of working with different models of smartphones, possible errors and ways to fix them.

Before you go to the instructions, make sure your smartphone supports NFC-Type 4 (used for card emulation), and you will find a full list of compatible Xiaomi/Redmi/Poco devices in the next section.

What Xiaomi smartphones support the binding of “Troika” through NFC

Not all Xiaomi devices can work with transport cards. To successfully link Troika, your smartphone must meet three key requirements:

• 📱 The presence of a chip NFC — You can't emulate a map without it. Check the model specifications on the official website.
• 🔄 Support for Host Card Emulation (HCE) — Technology that allows a smartphone to simulate a contactless card.
• 🛡️ Certification for working with transport systems – not all NFC-Modules have been tested in the Moscow metro.

Below is a table with current Xiaomi models, which are guaranteed to support the binding of the Troika (data for 2026):

⚠️ Note: Even if your model is on the list, make sure the firmware is updated to the latest version. MIUI. Older versions (below 13.0.5) may have problems emulating cards due to lack of drivers for Secure Element.

Preparing the phone: turn on NFC and adjust the settings

Before you tie the Troika, you need to set up your smartphone correctly, and this is a stage that is often missed, which causes errors in the fare payment.

1. Activate NFC: Go to Settings → Connect and Sharing → NFC and turn on the switch. Make sure the mode is set to No Limits (not "Payments Only").
2. Update MIUI: Go to Settings → About Phone → Update System and install the latest firmware. To work with Troika, you need MIUI 14 or later.
3. Set up screen lock: Card emulation only works when the phone is unlocked. PIN-code or pattern lock in Settings → Lock screen.

🔹 Useful advice: If in the settings NFC No card emulation option, so your smartphone does not support HCE. In this case, it will not work to tie the “Troika” – you will need to buy an external one. NFC-module (e.g. Xiaomi) NFC Tag).

NFC enabled in settings

The latest version of MIUI is installed

Screen lock (PIN/graphics) is configured

Smartphone discharged by at least 20% (to avoid disconnection during tethering)-->

Step-by-step: how to tie the “Troika” to Xiaomi via NFC

Now, the most important thing is that you link the card, and it takes no more than 5 minutes to do the whole process, but it requires you to do the steps exactly, and a mistake at any stage can lead to a card being locked!

Step 1: Install the Troika app

Download the official Troika: Transport Map app** from Google Play or AppGallery. Avoid third-party sources - there are often fake versions with viruses.

Step 2: Sign in to the system

Sign up or log in to an existing account via a phone number, and link your plastic Troika (if you already have one) to your profile, which will keep your balance and travel history after the transfer.

Step 3: Start the binding process

1. Open the application and select Link the card → to the phone.
2. Bring the plastic “Troika” to the back of the smartphone (where is located) NFC-chip).
3. Confirm the data transfer by entering the code from SMS.

Step 4: Check the performance

Once you've successfully linked it, you'll have a virtual map in the app, to make sure it works.

• 📱 Bring your phone to the validator in the subway/ground transport.
• 🔄 The screen should flash green, which means that the payment has passed.
• 💳 In the Troika app, check that the balance and travel history match the plastic card.

⚠️ Note: If the validator shows an error "The card is invalid" after the binding, then the smartphone is not certified to work with Troika. In this case, contact the Moscow Metro service center with a passport and a plastic card for manual activation.

Frequent problems and their solutions

Even when you set it up properly, users often face difficulties, and let's look at the most common errors and how to fix them.

1.The phone does not recognize the plastic "Troika"

Reason: Most often it is due to chip damage in the card or malfunction NFC-smartphone-module.

Decision:

• 🔍 Check the card on another phone with NFC.
• 📱 Reinstall the Troika app and clear its cache to Settings → Annexes.
• 🔄 Update your smartphone to the latest version.

2.After tethering, the validator does not read the phone

Reason: Perhaps the NFC settings have disabled card emulation or the smartphone is not certified.

Decision:

• 📋 Check what's in the Settings → NFC card emulation mode is enabled.
• 🔄 Restart your phone and try again.
• 📞 Call for support for Troika (phone number: +7 495 539-54-54) check card status.

3.The balance has not been transferred to the virtual card

Reason: A synchronization error when binding or using an informal application.

Decision:

• 🔄 Untie and tie the card again through the official application.
• 💳 Check the balance of the plastic card on the website troika.mos.ru.
• 📧 Write in support of the "Troika" with the card number and screenshot of the error.

💡

If the validator on the subway doesn't read the phone the first time, don't pull the phone away right away. Hold it at the reader for 2-3 seconds - sometimes it takes longer to log in.

Security: How to protect the virtual “Troika” from fraud

A virtual card is convenient, but also vulnerable to data theft, and fraudsters can try to copy your Troika or write off funds if the phone falls into the wrong hands.

⚠️ Note: If you lost the phone with the attached "Troika", immediately block the card through the application or the site troika.mos.ru. to restore the balance will be possible only upon presentation of the passport at the ticket office of the subway.

🔹 Important: Never hand your smartphone over to outsiders to "check" the binding. Fraudsters can copy card data in seconds with special help NFC-reader.

💡

Virtual “Troika” on Xiaomi is protected better than a plastic card: if you lose your phone, the card can be instantly blocked via the Internet, while the plastic “Troika” will have to be blocked at the subway ticket office.

Alternative ways to pay for travel through Xiaomi

If your smartphone does not support the binding of “Troika” or you are faced with technical problems, consider alternative options:

1. Payment via Samsung Pay/Google Pay

Some bank cards (for example, Tinkoff or SberBank) allow you to link Troika to contactless payment services.

1. Add a bank card to Google Pay.
2. In the bank application, activate the option “Transport card”.
3. Bring the phone to the validator - the debit will occur from the bank account, but at the rates of Troika.

2.Use of QR-code

In the Moscow metro and ground transport operates a payment system for QR-And the downside of this is that you need to unlock your phone and open the app, which is longer than just putting your smartphone in the validator.

3.External NFC-marker

If your Xiaomi doesn’t support card emulation, you can buy it. NFC-sticker (e.g. Xiaomi) NFC Tag 2) and record the Troika data on it:

• Download the NFC Tools app from Google Play.
• Bring the sticker to the phone and select Write → Copy the card.
• Apply a plastic “Troika” to the back of the smartphone for copying.

⚠️ Note: Copying the "Troika" on NFC-The sticker may violate the rules of the Moscow Metro, officially only binding to certified smartphones is allowed.

FAQ: Answers to Frequent Questions