Why Mi Band 4 doesn’t turn on after recharging and what to do about it
Did you take the Xiaomi Mi Band 4 fitness bracelet out of the charger and it stubbornly doesn't want to turn on? The screen remains black, there is no vibration, and it seems that the gadget is finally "dead"? Don't panic - in 90% of cases the problem is solved in 5 minutes without going to the service center. The fact is that the bracelet can "hang" due to a firmware failure, improper connection to charging or battery discharge to a critical level.
In this article, we will discuss all the possible reasons why the Mi Band 4 does not respond to charging, as well as give step-by-step instructions for its “resuscitation”, you will learn how to properly charge the device, what to do with a dead screen and when to really contact specialists. All methods are tested on the 2019-2026 release bracelets and are relevant for firmware 1.0.9.54 and later.
Before you start, check out two key points:
- ⚡ Charger: Do you use the original Xiaomi cable? counterfeits often don't provide the voltage you need.
- 🔋 Contact status: whether there is a bracelet or charging of oxidation, dirt or mechanical damage on the metal sites?
Step 1: Proper charging – why the bracelet may not turn on
The first and most common mistake users make is to connect to the charger incorrectly, and the contacts on the Mi Band 4 bracelet are located on the back of the case and should fit tightly to the charging pins, and if the connection is unreliable, the current does not come in and the battery does not charge.
How to check:
- Remove the bracelet capsule from the strap (click on the button on the side and pull up).
- Place it in the charger so that the metal contacts coincide with the connectors.
- With a light movement, press the capsule until you click (the characteristic sound of fixation should be heard).
If the charging indicator (red light bulb) does not light up:
- 🔌 Try another charger (preferably original).
- 🧹 Clean the bracelet contacts and charging with a cotton swab soaked in alcohol.
- 🔄 Turn the capsule in charge – sometimes it helps to change the polarity.
💡
If the bracelet was not used for a long time (more than 3 months), its battery could run out to 0%, in which case it will take 10-15 minutes to recharge before it reacts to the on.
Step 2: Forced reset of the bracelet
If the Mi Band 4 was charging but showing no signs of life, there may have been a software failure, in which case a forced reset will help, which works even with a fully discharged battery, if the bracelet is even slightly recharged before it is charged.
Resetting instructions:
- Connect the bracelet to charging and wait until the red indicator lights up (at least 5 minutes).
- Disconnect it from the charger.
- Press and hold the touch button under the screen for 20-30 seconds.
- Release the button when the Mi logo appears on the screen.
If the screen remains black:
- 🔋 Try again after 10 minutes of charging.
- 🔌 Try another charger or USB-port.
- 📱 Make sure the bracelet is not tied to another smartphone (sometimes this blocks the onset).
What if the bracelet vibrates but the screen is not turned on?
Step 3: Check with Mi Fit or Zepp Life
If the bracelet vibrates when you connect to the charger, but does not turn on, the problem may be in sync with the phone. Often the Mi Band 4 “hangs” after updating the firmware or resetting the settings on the smartphone, in which case reconnecting through the official application will help.
Step-by-step:
- Install the latest version of Mi Fit (for Android) or Zepp Life (for iOS).
- Open the app and go to Profile → My devices.
- Click Add Device and select Mi Smart Band 4.
- Follow the instructions on the screen. If the bracelet is not detected, press Device not displayed? and select Mi Band 4 manually.
If the app does not see the bracelet:
- 📱 Reboot your smartphone.
- 🔄 Turn Bluetooth on/off.
- 🚫 Remove the bracelet from the list of conjugate devices in Bluetooth settings.
Turn off the VPN on your phone
Turn on geolocation.
Update the Mi Fit/Zepp Life app
Charge the bracelet at least 20%-->
Step 4: Diagnostics of battery and contacts
If none of the previous methods worked, the problem may be a physical malfunction: contact oxidation, battery bloating or plume damage, typical Mi Band 4 "diseases" after 2-3 years of use.
How to check:
| Symptoms. | Probable cause | Decision |
|---|---|---|
| The bracelet warms up when charging | Short circuit or bloated battery | Disable immediately, do not use |
| Charging is jerky (indicator flashes) | Oxidation of contacts or damaged cable | Clean contacts with alcohol, replace the cable |
| The bracelet is turned on, but discharges quickly | Battery wear (capacity < 50%) | Replacement of the battery in the service |
| The screen flickers or displays artifacts | Display plume damaged | Screen repair or replacement |
Critical sign of malfunction: if the bracelet smells of a burn or if there are traces of melting on the case, DO NOT TRY to turn it on!
💡
If the bracelet does not respond to charging for more than a day and the contacts are clean, there is a 95% probability of a problem with the battery or power board.
Step 5: Update the firmware manually
Sometimes the Mi Band 4 won't turn on because of a broken firmware, especially if the charging stopped during the upgrade, and then forced flashing over the PC will help.
- 🖥️ Windows computer 7/10/11.
- 🔌 Original. USB-cable for Mi Band 4.
- 📁 Archive with firmware (can be downloaded to mi-band.ru/firmware).
- 🛠️ Programme MiBand4Tools or Gadgetbridge.
Step-by-step:
- Unpack the archive with firmware in a folder on the desktop.
- Connect the bracelet to charge and start MiBand4Tools.
- In the program, select File → Open Firmware and specify the path to the firmware file (.fw).
- Press Flash Firmware and wait until the process is over (the bracelet will reboot automatically).
⚠️ Note: Do not disconnect the bracelet from the USB This can lead to a complete loss of the device's performance.
When is the time to contact the service
If you've tried all the techniques, but the Mi Band 4 still doesn't turn on, it's probably a hardware problem.
- 🔥 The bracelet warms or smells of burns.
- 💧 Moisture is visible on the screen or inside the case (even if the device has not drowned).
- 🔋 The battery swelled (seems to deform the body).
- 📱 Mi Fit app doesn't detect bracelet even after reset.
Average cost of repairs in 2026:
| Type of repair | Cost (₽) |
|---|---|
| Battery replacement | 800–1 200 |
| Repair/replacement of the screen plume | 1 000–1 500 |
| Cleaning contacts + diagnostics | 500–800 |
| Replacement of food costs | 1 500–2 000 |
Only contact authorized Xiaomi service centers or workshops with good reviews. Avoid garage repairs - this is fraught with final failure of the device.