Xiaomi Mi Band 4 not launching? Complete guide to first enable and solve problems

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular wearables even years after its release, and its simplicity, reliability and rich functionality attract users, but sometimes owners face a problem: the bracelet does not turn on or respond to presses, and the reasons can be different from banal discharge to software failures.

In this article, we will look at all the possible ways to start the Mi Band 4, including first turning on after purchase, recovery from deep discharge, forced reboot and resetting. You will also find a table of typical errors and their solutions, battery care tips and answers to frequent questions. If your bracelet is dead, do not rush to carry it to the service: in 90% of cases, you can solve the problem yourself in 5-10 minutes.

1.The first inclusion of Mi Band 4: step-by-step instruction for beginners

If you’ve just unpacked the Xiaomi Mi Band 4 or pulled it out after a long storage period, the first switch on may raise questions.

• 🔋 Charge the bracelet. Even if the indicator is not on, plug it into the charger for 15 to 20 minutes. Use the original cable or certified magnetic connector analogue.
• 📱 Install the Mi Fit app. Download it from Google Play or the App Store. Without it, the bracelet won't sync.
• 🔄 Press the button on the bracelet. Once you recharge, press the touch button under the screen once.

If the bracelet does not respond to pressing after charging, try a forced reboot (for this in the next section). Also check if the charging cable fits tightly: sometimes the contacts become oxidized or contaminated.

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If the bracelet is not charging, wipe the contacts on the back with an alcohol wipe, often due to oxidation or dust.

Forced reboot: what to do if Mi Band 4 doesn't turn on

If the Mi Band 4 doesn’t respond to taps or freezes after an upgrade, hardware reset will help, which works even with a battery running low (if at least 5% of the charge remains).

Instructions:

1. Connect the bracelet to the charger (required!).
2. Press and hold the touch button under the screen for 10-15 seconds until you feel the vibration.
3. Let go of the button. The Mi logo should appear, which is a sign of a successful reboot.

If the bracelet does not vibrate or turn on:

• ⚡ Check the charging cable and power supply (use the adapter on the 5V/1A).
• 🔌 Try another charger or USB-port.
• 🕒 Leave the bracelet on charge for 1-2 hours – perhaps the battery is completely discharged.

Firmware updates | Long-term storage |Falls/Blows |Impact self-discharged |Other reasons-->

3.Recovery after deep discharge: how to "resuscitate" the bracelet

If the Mi Band 4 doesn’t turn on or charge for more than a day, it’s likely that the battery has gone into deep discharge mode, in which case standard charging won’t help – you need to wake up the power controller.

Recovery methods:

⚠️ Attention: Contact closure is risky, you can damage the board, use it only if other methods have not worked, and you are ready for possible repairs.

If none of the methods worked, it is likely that a battery replacement is needed, and Xiaomi service centers cost between 800 and 1500 rubles (2026).

4. Resetting to factory settings: when and how to do

Resetting the Mi Band 4 to factory settings helps with:

• 🔄 Interface freezes and lags.
• 📵 Problems with synchronization with the phone.
• 🔋 Quick battery discharge (if the cause is software).
• 🔒 Forgotten. PIN-code (if it is installed).

How to reset your settings:

1. Open the Mi Fit app and go to Profile → Mi Smart Band 4 → Additional → Resetting.
2. Confirm action, the bracelet will reset and return to factory settings.

If the bracelet is not synchronized with the phone:

1. Remove it from the list of devices in Mi Fit.
2. Perform a forced reboot (see Section 2).
3. Add the bracelet again through the Devices → Add the device.

Save your steps and sleep data in Mi Fit| Make sure the bracelet is at least 20% charged | Turn off Bluetooth on your phone and turn it on again |Close background apps that may interfere with sync-->

Typical errors and their solutions: fault table

In this section, we have collected the most common Mi Band 4 problems and how to fix them, and if your situation is not described, check the FAQ section at the end of this article.

If the problem persists after all the manipulations, check the bracelet for physical damage (cracks, dents, traces of oxidation on the contacts). In some cases, flashing through informal tools helps, but it is risky - you can turn the device into a "brick".

6. Battery care: how to extend the life of the Mi Band 4

The average battery life of the Mi Band 4 is 2-3 years when used properly. To avoid premature wear, follow these tips:

• 🔋 Don't discharge to 0%. Connect to charge at 10-20% charge. Deep discharges reduce battery life.
• ⚡ Use the original cable. Cheap analogues can deliver the wrong voltage, which harms the power controller.
• 🌡️ Avoid overheating and cold. Do not leave the bracelet in direct sunlight or in the cold (below). -10°C).
• 🔄 Calibrate every 3 months. Completely discharge the bracelet, then charge to 100% without interruption.

If the bracelet is quickly discharged (less than a day of work), try:

1. Disable unnecessary notifications in Mi Fit.
2. Reduce the frequency of data synchronization (for example, up to 1 time per hour).
3. Turn off the function of raising your hand to activate the screen.
4. Reset the settings to factory.

⚠️ Warning: If the bracelet is swollen or deformed, stop using immediately! This is a sign of a battery failure that could cause a fire.

7. Frequent Questions About Xiaomi Mi Band 4

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If the Mi Band 4 does not turn on, 95% of the time the problem is solved by charging, rebooting or resetting settings. Contact the service only if the bracelet does not respond to manipulation and does not charge for a day or more.