How to connect Xiaomi Mi Band 4 NFC to a smartphone: full instructions with error analysis

Fitness bracelet Xiaomi Mi Band 4 NFC It remains one of the most popular wearable devices even years after its release, and its key advantage is that it supports contactless payments through built-in payments. NFC-The chip, which makes it different from the basic version without the module, but many users have difficulty connecting the bracelet for the first time: the phone doesn't detect it, the app makes errors, and payments don't work. In this article, we will analyze all stages of configuration - from pairing with the phone to activation. NFC-Payment and how to avoid typical problems.

The Mi Band 4 NFC features a region-specific feature, such as in China, the band supports AliPay, and in the global version only Mi Pay (which, alas, doesn’t work in Russia or most CIS countries), and we’ll take these nuances into account and offer alternative solutions for users from different regions, and if you’ve just unpacked the bracelet or want to reconfigure it after a reset, this guide will help you get it right the first time.

1.Preparation for connection: what to check before starting

Before you start pairing, make sure your smartphone and bracelet meet the minimum requirements. Xiaomi Mi Band 4 NFC is compatible with Android 5.0+ or iOS 10.0+ devices, but a more recent version of the OS is recommended for full operation (including notifications and payments).

• 📱 Bluetooth Version: Bracelet Requires Bluetooth 4.2 LE Or newer. On older smartphones (like Redmi). 3S iPhone 5 may have connection problems.
• 🔋 Bracelet charge: Minimum battery level for pairing is 20%. If the indicator flashes red, charge the device first.
• 🌍 Firmware region: Chinese versions (CN) Mi Accounts can be linked to foreign Mi Accounts, and Global versions are free of this restriction.
• 📲 Free space on the phone: the Mi Fit or Zepp Life app weighs ~100MB, plus you'll need cache space.

If you bought the bracelet from hand or in an unofficial store, you risk running into a gray import with Chinese firmware, and you can check the region by the serial number on the box or in the bracelet settings (we will discuss this below), in which case you may need to change the firmware region - but this is a separate procedure that requires caution.

⚠️ Note: If your smartphone is running under control MIUI With Chinese localization, Mi Fit can automatically install the Chinese version of the firmware on the bracelet, which will lead to problems with payments and notifications in Russian.

2.Installation and configuration of the application: Mi Fit vs Zepp Life

Xiaomi officially recommends using the Mi Fit app, but since 2022, the company has been actively moving users to Zepp Life (formerly Amazfit).Both apps support Mi Band 4 NFC, but there are key differences:

We recommend you install Zepp Life, especially if you have a Chinese version of the bracelet, and you can download it from Google Play or the App Store.

1. Open the app and sign up (or sign in via Mi Account, Google, Apple ID).
2. Click Add Device → Select Bracelet → Mi Smart Band 4.
3. Allow access to notifications, geodata and contacts (necessary for proper operation).

Important: If you use an iPhone, turn off the Bluetooth Limits feature in your privacy settings before connecting, otherwise the bracelet will turn off every 10-15 minutes.

Step-by-step: How to pair Mi Band 4 NFC with a phone

Now, to the connection itself, follow the instructions carefully, and skipping the steps can cause synchronization errors.

Charge the bracelet to 50%+

Install Zepp Life/Mi Fit

Turn on Bluetooth on your phone

Allow geolocation for the application

Remove the bracelet from the package (if new)

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1. Activation of the bracelet Press the touch button under the Mi Band 4 screen to wake it up. If the bracelet is new, you will see a welcome screen asking you to connect to the phone. If the bracelet has already been used, reset: go to Settings → Reset (scroll down on the bracelet screen and select the icon with the wrench).
2. Search Device In the Zepp Life app, click Add Device → Mi Smart Band 4. Search will begin. Make sure the bracelet is near the phone (no further than 1 meter).
3. On the screen of the phone and bracelet will appear 4-digit code. Compare it — if the codes match, click Confirm on the phone and tap the button on the bracelet.
4. After pairing, the app will suggest updating the firmware. Don't refuse - this will fix the bugs and add support for new features. The update will take 5-10 minutes (the bracelet will restart).

If you have a “failed to connect” error during the device search phase, try:

• 🔄 Reboot Bluetooth on your phone (turn off/on).
• 📱 Remove the bracelet from the list of conjugate devices in the Bluetooth settings of the phone.
• 🔋 Remove the bracelet from the charger (if it was connected during pairing).

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If the bracelet does not respond to touch, check if the "Screen Lock" mode is turned on (press the button for 5 seconds to unlock).

4.Tune in. NFC-How to link your card to Mi Band 4

The main difference between the Mi Band 4 NFC and the base model is the support for contactless payments.

• 💳 In Russia and the CIS, only Mi Pay officially operates, but it supports a limited list of banks (for example, Sberbank, Tinkoff, VTB.
• 🌐 AliPay is available for Chinese versions of the bracelet, but it requires a Chinese bank account and phone number.
• 🚫 Google Pay and Apple Pay are not supported – the bracelet only works with its payment system.

To set up payments:

1. Install the Mi Pay app from Google Play or the App Store.
2. Open Mi Pay and sign in through the same Mi Account as in Zepp Life.
3. Click Add Card → Select Bank → Enter the card details (number, expiration date, CVC).
4. Bring the bracelet to the phone (must be enabled NFC on the smartphone) and confirm the binding.
5. Install. PIN-payment code (will be requested each time the bracelet is used).

After linking the card, payments will work even without a phone - just bring the bracelet to the terminal and enter it. PIN. Limitation: the amount of one payment should not exceed 1000-5000 ₽ (bank-dependent).

⚠️ Warning: If you reset the bracelet to factory settings, all the attached cards will be deleted, you will have to add them again, and payments will stop working when the bracelet is below 5%.

5. Typical errors and their solutions

Even with the right connection, users are facing problems, and we've collected some of the most common bugs and ways to fix them:

If the bracelet stopped syncing after updating the firmware, try:

1. Remove it from the Zepp Life app.
2. Reset the bracelet settings (Settings → Reset).
3. Add the device to the app again.

Important: If the bracelet is reset PIN-code, but you didn’t install it – type 0000 or 1234 (standard codes for new devices).

Change of the firmware region: if the bracelet is "Chinese"

If your Mi Band 4 NFC is purchased in China or has CN firmware, you will face limitations:

• 🚫 It is impossible to link cards of non-Chinese banks.
• 🚫 Notifications are displayed in hieroglyphics.
• 🚫 No support for Russian language in the menu.

So the solution is to change the firmware region to Global.

1. Install the Gadgetbridge app (alternative software for Xiaomi devices).
2. Connect the bracelet via Gadgetbridge (instructions inside the application).
3. Go to Settings → Firmware and select a firmware file marked Global.
4. Wait for the update to be completed (the bracelet will reboot several times).

⚠️ Warning: Change of firmware can lead to loss of data (steps, sleep history) and cancellation of warranty, and there is a risk of "bricking" the bracelet if you interrupt the update process!

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After changing the firmware region, you need to re-link the cards to Mi Pay - the old payment data will be reset.

7.Operation optimization: settings to save battery

The average lifetime of the Mi Band 4 NFC on a single charge is 10-15 days, but with active use of NFC and notifications, it can be reduced to 5-7 days.

• 🔋 Turn off constant heart rate monitoring (only during exercise).
• 📵 Reduce the number of notifications – leave only important ones (calls, SMS, messengers).
• 🌙 Turn on sleep mode at night (turns off vibration and backlighting).
• 🔄 Turn off autosynchronization and manually update data 1-2 times a day.

You can also calibrate the battery:

1. Discharge the bracelet to 0% (until it turns off).
2. Charge to 100% without interruptions (~2 hours).
3. Repeat the cycle 2-3 times – this will help to reset the errors of the power controller.

If the bracelet began to discharge quickly after updating the firmware, try to roll back to the previous version through Gadgetbridge.

FAQ: Answers to Frequent Questions