Xiaomi Mi Smart Band 4 NFC: How to turn on the bracelet and avoid mistakes

Xiaomi Mi Smart Band 4 fitness bracelet NFC It remains one of the most popular health monitoring gadgets, despite the launch of new models, and its key feature is the support for contactless payments through built-in devices. NFC-The chip, which distinguishes the device from the basic version, but many users face difficulties already at the stage of the first switch on: the bracelet does not respond to pressing, does not connect to the phone or does not show signs of life at all.

In this article, we will discuss all possible ways to activate the Mi Band 4 NFC, including device preparation, charging, syncing with your smartphone and setting up basic functions. Particular attention will be paid to the typical errors that prevent you from turning on the bracelet the first time, from a discharged battery to problems with Bluetooth. If you just unpacked the box or are trying to revive the bracelet after a long downtime, this guide will help you avoid common traps.

Preparation for the first turn on: what to check before activation

Before you press the button on the bracelet, make sure all the prerequisites are met. Xiaomi Mi Smart Band 4 NFC is not a standalone device, but an accessory that requires communication with a smartphone. Without proper preparation, you risk getting a dead gadget or running into synchronization errors.

Here is the mandatory checklist before inclusion:

• 📱 Compatible smartphone: device on Android 5.0+ or iOS 10.0+ Bluetooth 4.2 or later. Check the OS version in your phone settings.
• 🔋 Charging the bracelet: even if the indicator is not on, connect the Mi Band 4 to the charger for 10-15 minutes%.
• 📲 Mi Fit: Download the latest version from Google Play or App Store.Old versions may not support NFC-function.
• 🌐 Internet on the phone: to activate the bracelet and download the firmware will require a stable connection to the network (Wi-Fi or mobile Internet).

If you have bought the bracelet with your hands or it has been lying unused for a long time, reset to factory settings before turning on. To do this, connect the Mi Band 4 to charging and hold the touch button for 10-15 seconds until the vibration appears, this will clear the device memory of old data.

Charging the bracelet: why it does not turn on and what to do

The most common reason Xiaomi Mi Smart Band 4 NFC doesn’t respond to pressing is a battery that’s dead, and the manufacturer says the bracelet can last up to 20 days on a single charge, but after prolonged storage or transportation, the charge often drops to zero. Even if the indicator on the charger doesn’t light up, it doesn’t mean the bracelet isn’t charging.

Follow this algorithm:

1. Connect the bracelet to the original charger (there is a magnetic connector cable included) and make sure the contacts on the bracelet and charging are clean and dry – oxidation or moisture can block charging.
2. Connect the charger to USB-port 5V/1A (Charging from your phone or laptop is fine. USB-hubs and faulty power supplies.
3. Leave the bracelet on charging for 30 to 60 minutes. After 5 to 10 minutes, the red indicator should light up (if the charge is critically low, the indication may appear later).
4. After the indicator appears, wait until it changes to green (full charge) or at least starts flashing.

If the indicator does not light up:

• 🔌 Check the cable and power supply on another device.
• 🧹 Clean the bracelet contacts with a cotton swab soaked in alcohol.
• 🔄 Try another charger (such as from the Mi Band). 5/6 — they're compatible).
• 🛠️ If the bracelet is not charging at all, the battery or power controller may be faulty (repair required).

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If the bracelet is not charging, try plugging it into charging when it's off. Sometimes the power controller will block charging when the device is active.

How to turn on Xiaomi Mi Smart Band 4 NFC

When the bracelet is charged (the indicator is on green or flashing), you can start turning on. The process takes no more than 2-3 minutes, if done correctly.

1. Turn off the bracelet from charging. Keep it near your smartphone (no more than 10 cm away).
2. Hold the touch button (round area under the screen) for 3-5 seconds until you feel the vibration and see the Mi logo.
3. Open the Mi Fit app on your phone and allow access to Bluetooth, notifications and geodata (if requested).
4. Click on “Profile → Add device” and select Mi Smart Band 4 from the list.
5. Follow the instructions on the screen: confirm pairing in the phone's Bluetooth settings, then wait for the firmware update (if required).

If the bracelet is switched on but not connected to the phone:

• 🔄 Reboot Bluetooth on your smartphone (Settings) → Bluetooth → Off./On.).
• 📱 Remove the bracelet from the list of conjugate devices in Bluetooth settings and reconnect.
• 🔧 Update the Mi Fit app to the latest version.
• 🚫 Turn it off. VPN Proxies – They can block Xiaomi servers.

NFC and Contactless Payments Setup

Xiaomi Mi Smart Band 4 NFC supports contactless payments through the Mi Pay service (in Russia – through World Pay or Google Pay by linking the card to the bracelet). However, to activate this feature, additional settings are required, which many users miss.

Instructions for setting up NFC:

1. Activate NFC in Mi Fit: Open the Mi Fit app. Go to Profile → Mi Smart Band 4 → Bracelet Functions → NFC. Click Add Card and follow the instructions (you will need to link your bank card).
2. Check the compatibility of the bank: Russia supports Mir, Visa and Mastercard cards from partner banks (Sberbank, Tinkoff, VTB, etc.). Clarify the list of supported banks on the Mi Pay website or at your bank.
3. Set up a pin code for payments: In Mi Fit, go to NFC → Security settings. Set a 4-digit pin (you will need to enter it with each payment).

Important nuances:

• 💳 Payment limit: by default up to 1,000 ₽ per transaction (can be increased in the settings of the bank).
• 📶 Offline payments: the bracelet can make up to 5 payments without connecting to the phone (then you will need synchronization).
• 🔒 Lock when removed: If the bracelet is lost, lock it through Mi Fit (Profile) → Remove the device).

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NFC in Mi Band 4 only works when the bracelet is connected to the phone via Mi Fit. Without active synchronization, payments will not be available.

Common mistakes and their solutions

Even if you follow instructions correctly, users often face problems.-5 errors and ways of eliminating them:

If none of these methods worked, try a forced reset:

1. Connect the bracelet to the charger.
2. Hold the touch button for 15-20 seconds until you feel a double vibration.
3. Turn off the charge and repeat the switching process.

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If the bracelet is buggy after a firmware update, roll it back via Mi Fit: Device Profile → Firmware Update → Return the previous version (if available).

How to check the performance of the bracelet after turning on

After successful activation of Xiaomi Mi Smart Band 4 NFC, you need to make sure that all the features work correctly.

• 📊 Screen and sensor: Check the response to swipes (swipe up/down the screen). Press the touch button, the menu should open.
• 🔋 Battery Charge: In Mi Fit, check the charge level (Profile) → Mi Smart Band 4 → If the charge drops too quickly (more than 10% a day without use), calibrate the battery: discharge the bracelet to 0%, then charge to 100% without interruption.
• 💳 NFC Payments: Bring the bracelet to the payment terminal (for example, in the store or subway) and wait for the vibration and the sound of the terminal.
• 📱 Phone sync: Check if call and text notifications are coming.Update steps data in Mi Fit (swipe down on the bracelet's home screen).

If one of the features fails, go back to the relevant section of the article or reset your settings. For example, if notifications don't come, check:

• Permissions for Mi Fit in phone settings (Notifications → Allow).
• Synchronization settings in Mi Fit (Profile → Notifications → Enable All).
• Do not disturb mode on the bracelet (disabled by swipe down and pressing the bell icon).

Tips for extending the life of the bracelet

Xiaomi Mi Smart Band 4 NFC is designed for 1-2 years of active use, but if used correctly, it can last longer.

• 🔋 Charging: Charge the bracelet every 2-3 weeks, even if it is not completely discharged. Full discharge reduces battery life. Use only the original cable - cheap analogues can damage the power controller.
• 💦 Waterproof: Bracelet has protection of 5 ATM, But you don't want to swim with it in chlorinated or salt water, and after contact with water, rinse the bracelet with fresh water and dry it.
• 🛡️ Mechanical damage: Avoid bumps and falls - the screen is covered in glass but has no oleophobic coating (easily scratched).Remove the bracelet before bed if sleeping on your hand with the device - this will prevent accidental pressing.
• 📱 Software: Regularly update your firmware through Mi Fit — new versions fix bugs and add features. Don't install unofficial firmware — this can block NFC.

If the bracelet has started to reboot on its own or the screen flickers, this is a sign of battery wear or damage to the plume. In this case, contact the Xiaomi service center or consider replacing the battery (cost - from 800). ₽).

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To extend the life of the screen, reduce the brightness in the bracelet settings (Display → Brightness → Medium).

FAQ: Frequent questions about Xiaomi Mi Smart Band 4 NFC