Xiaomi Mi Smart Band 4C: How to turn on the bracelet, all ways (2026)

Fitness bracelet Xiaomi Mi Smart Band 4C — One of the most popular models among budget trackers, but even with such a simple device, sometimes problems arise, and most often users are faced with the fact that the bracelet does not turn on after buying, long-term storage or discharging. In this article, we will discuss all possible ways to activate the Mi Band. 4C, including forced discharge, charging and fault diagnosis.

It is important to understand that the Mi Smart Band 4C — It's a simplified version of the line, and some of the ways you turn it on (like a button) don't work here. Instead, it uses a combination of gestures and a charger connection. If your bracelet does not respond to touch or the screen does not light up, do not rush to carry it to the service - in 90% of cases, the problem can be solved independently.

We will also look at common errors that prevent the correct turn on, and give recommendations for battery care to avoid similar situations in the future. 4C, including the latest updates to 2026.

Preparation for inclusion: what to check before the start

Before you try to include Xiaomi Mi Smart Band 4C, Make sure that the basic conditions are met. Often the problem is not with the bracelet itself, but with the wrong preparation.

The first thing you need to do is check the battery power, and even if you just bought a device, it could have run out of power in storage. Connect the bracelet to the charging cable (use the original adapter). 5V/1A or 5V/2A) And wait a minimum. 30 Minutes – sometimes the charging indication does not appear immediately.

• 🔋 Charger: Use only the original Mi Band cable 4C Cheap substitutes may not provide the voltage needed.
• 🔌 Power supply: Connect charging to the socket, not to the socket USB-port of the computer - the latter often gives insufficient current.
• 📱 Mi Fit app: Install the latest version of the app on your smartphone (available for Android 5.0)+ iOS 10.0+). Without it, full activation is impossible.
• 🔄 Smartphone reboot: Sometimes connection issues are solved by simply restarting the phone - this resets the Bluetooth cache.

If after 30 minutes of charging the bracelet screen does not catch fire, try to move it slightly in the charging cradle - the contacts may not touch. Also check the connector for contamination or oxidation. In rare cases, a slight tap on the body of the bracelet (no fanaticism!) helps to "wake up" the battery.

⚠️ Note: Do not use the Mi Band to charge 4C higher voltage adapters 5V (This can damage the power controller of the bracelet.

2. Standard way of inclusion: through charging and application

The main method of activation Xiaomi Mi Smart Band 4C — This is a charger connection, then synchronized through Mi Fit:

1. Connect the bracelet to the charging cable. Charging animations (lightning battery) should appear on the screen. If you don't have one, wait 5-10 minutes.
2. Install the Mi Fit app (links for Android and iOS).
3. Sign up or sign in to your Xiaomi account (required!).
4. In the app, click Profile → Add the device → Bracelet → Mi Smart Band 4C.
5. Follow the instructions on the screen. When you have a Bluetooth connection request, confirm it.
6. Wait until the synchronization is complete. The bracelet will automatically turn on and update the firmware (if required).

If you have a “Can’t Find the Device” error at the connection stage, try:

• 🔄 Reboot your smartphone and bracelet (disconnect / connect from charging).
• 📶 Turn Bluetooth on/off on your phone.
• 🚫 Remove the bracelet from the list of conjugate devices in Bluetooth settings and repeat the search.

In rare cases, the application may request a firmware update before first turning on. Don't interrupt this process! Disabling the bracelet during an update can cause the software to break.

Charging cable checked|Mi Fit application installed|Xiaomi account created/active|Bluetooth on your phone is on|The bracelet was charged for at least 30 minutes.-->

3. Forced inclusion: what to do if the bracelet does not respond

If you're a Mi Smart Band 4C It doesn't turn on even after a long charge, and there may have been a software failure, and in this case, a hard reset will help, and this method works even if the bracelet screen is completely black.

Resetting instructions:

1. Connect the bracelet to the charger and wait for the charging indicator to appear (if it appears).
2. Turn off the bracelet from charging.
3. Press and hold the touch button (the area under the screen) for 15-20 seconds.
4. Without releasing the button, plug the bracelet back into charging and hold for another 10 seconds.
5. Release the button. The bracelet should vibrate and reset (the Mi logo will appear).

If the reset is successful, the bracelet will return to the factory settings, and it can be reconnected through Mi Fit. If there is no vibration and logo, repeat the procedure 2-3 times.

⚠️ Warning: Forced reset erases all data from the bracelet (steps, pulse, settings) and cannot be recovered after reset.

If the reset didn't work, the problem could be the battery or the power charge.

• 🔋 Try charging the bracelet from another source (e.g. power bank).
• 🔍 Check charging contacts for corrosion or damage.
• 📞 Contact the service center if the warranty is still valid.

4. Diagnostics of malfunctions: why the bracelet is not turned on

If none of these methods worked, check the bracelet for hardware problems, and here is a table of the most common causes and their signs:

Pay special attention to the bloating of the battery. If the body of the bracelet deformed or there is a characteristic smell, immediately stop trying to turn on and do not charge the device - this is dangerous!

You can use a multimeter to check the battery (if you have experience with electronics). Normal voltage at the charging contacts should be within 3.7–4.2V. If the indicators are much lower, the battery requires replacement.

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If the bracelet is turned on only on charging, but immediately turns off when disconnected, try "overclocking" the battery: hold it on charging 12+ You can use it for hours, then you can discharge it to zero and charge it back to 100 percent, and that sometimes helps you restore the capacity.

5. Updating firmware as a way to solve problems

Sometimes Xiaomi Mi Smart Band 4C It doesn't turn on because of outdated or damaged firmware, and an update through Mi Fit can bring it back to life:

1. Make sure the bracelet is at least 50% charged.
2. Connect it to your phone via Mi Fit.
3. Go to Profile. → Mi Smart Band 4C → Firmware update.
4. If a new version is available, click Update and wait until it is completed (don’t turn off the bracelet!).

The upgrade process takes 5-10 minutes, the bracelet will reboot automatically, if the update is suspended:

• 🔄 Wait 20 to 30 minutes, sometimes it’s slow.
• 📴 If the screen is gone, try a forced reset (see Section 3).
• 📡 Check the Internet connection – firmware downloaded from Xiaomi servers.

After a successful upgrade, the bracelet should turn on and sync with the phone. If the problem persists, try rolling back the firmware (in rare cases, the new version may contain bugs).

1. Remove the bracelet from the Mi Fit.
2. Reset it to factory settings (see Section 3).
3. Connect again – the application will offer to install a stable version of the firmware.

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Updating your firmware through Mi Fit is the only official way to restore Mi Band software 4C. The use of third-party firmware can lead to breakage of the device and loss of warranty.

6. Alternative Incorporation Methods (if nothing helps)

If the standard methods don't work, you can try less obvious solutions, which don't guarantee 100% results, but sometimes help to "resuscitate" the bracelet.

Method 1: Charging from another source

Use this:

• 🔋 Power bank with exit 5V/1A.
• 🖥️ USB-port of the laptop (sometimes gives a more stable voltage than the socket).
• 🔌 Charger from another Xiaomi bracelet (e.g. from Mi Band) 5/6).

Method 2: "Defrosting" the battery

If the bracelet was long dead, the battery could go into sleep mode.

1. Place the bracelet in a warm place (for example, next to the battery) for 10-15 minutes.
2. Connect to charging and hold 1-2 hours.
3. Repeat the forced discharge (Section 3).

Method 3: Connecting to a PC

In rare cases, the bracelet is defined as USB-device:

1. Get Mi Band on board. 4C PC via charging cable.
2. Open Device Manager (Windows) or System Information (macOS).
3. Check if a new device has appeared (usually as Unknown Device).
4. If yes, try updating the driver manually (sometimes this triggers the recovery process).

These methods work 10 to 20 percent of the time when standard methods don't work, and if the bracelet still doesn't turn on, it's probably hardware.

7.When to contact the service: signs of breakdown

If you have tried all the ways, but Xiaomi Mi Smart Band 4C It never turned on, you may need professional repairs:

• 🔥 The bracelet warms up when charging or using.
• 💧 On the screen or contacts, traces of corrosion / moisture are visible.
• 🔋 The battery is swelling (the body is deformed).
• 🔌 The bracelet is not defined by any device (phone, PC).
• 💥 After a fall or impact, it stopped turning on.

The cost of repairing the Mi Band 4C Usually it does not exceed 1,500-2,500 rubles (depending on the breakdown), however, if the bracelet is older than 2-3 years, it is better to consider buying a new model - for example, Xiaomi Smart Band 7 or 8.

Before the service visit:

• 📄 Keep a check or a warranty card (if any).
• 📱 Remove the bracelet from the Mi Fit to reset the binding.
• 🔍 Take a picture of the problem (such as a bloated battery or corrosion).

⚠️ Please note: Don’t try to disassemble the Mi Band yourself. 4C — It's got its body glued together, and if you open it in a neat way, you can damage the plumes of the screen or the battery.

8.Problem prevention: how to avoid breakdowns in the future

Xiaomi Mi Smart Band 4C served longer and had no problems with inclusion, follow these guidelines:

• 🔋 Charging: Charge the bracelet every 2-3 days, do not allow a full discharge (below 10%).
• 🌡️ Temperature: Avoid overheating (do not leave in the sun) and hypothermia (do not wear outside when you are in the sun). -10°C and below).
• 💦 Moisture: Despite protection 5 ATM, Do not swim in a bracelet in hot water or salty sea.
• 🔄 Updates: Update your firmware regularly through Mi Fit.
• 🧼 Cleaning: Wash the case and charging contacts with a dry wipe once a week.

It is also worth disabling unnecessary functions that quickly drain the battery:

• 📶 Continuous monitoring of heart rate (if not necessary).
• 🔔 Notifications from all applications (leave only important ones).
• 🌙 Illumination of the screen at maximum brightness.

Average lifetime of Mi Band 4C If you're properly operating it's 2-3 years, and then the battery starts to lose capacity, and the bracelet can spontaneously shut down.

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Regular charging (once every 2-3 days) and avoiding full discharge extend the life of the Mi Band battery 4C 30-50%.

Frequently Asked Questions (FAQ)