Xiaomi Mi Band 4C is one of the most popular fitness bracelets in the budget segment, but even with it users sometimes have problems when you first turn on: someone can not activate the device after purchase, someone faces a “dead” screen after discharging, and someone the bracelet simply does not respond to charging. In this article, we will discuss all possible ways to turn on the Mi Band 4C, including forced reset, charging check and malfunction diagnosis.
It is important to understand that the activation process can vary depending on the situation: a new device turns on differently than a bracelet after deep discharge or reset. We will describe each scenario in detail so that you can quickly bring the Mi Band 4C back to life. If your bracelet does not show signs of life, do not rush to carry it to the service: 90% of the time the problem is solved by yourself in 5-10 minutes.
Preparation for the first turn on: what to check before activation
Before you try to turn on the Xiaomi Mi Band 4C, make sure that the basic conditions are met. Often users miss these steps and spend time looking for non-existent faults.
- 🔋 Charging the bracelet. Even if you bought a new device, it could have been discharged during storage. 4C To the charger for 30-60 minutes, read the next section on how to charge correctly.
- 📱 Install the Mi Fit app. Without it, the bracelet won't activate. Download the latest version from Google Play or the App Store.
- 🔄 Smartphone compatibility. Mi Band 4C It works with Android 5.0+ iOS 10.0+. Check the OS version in the phone settings.
If you bought a used bracelet, be sure to reset it to the factory settings before you first turn it on. This will remove the binding to the previous owner. How to do this, read the section on reset.
⚠️ Please note: Don’t try to turn on the Mi Band 4C If the battery is completely drained, the bracelet will not respond to the press of the button, even if you hold it for a few minutes.
How to charge Mi Band 4C: nuances and errors
Incorrect charging is one of the main reasons why the bracelet doesn’t turn on. Xiaomi Mi Band 4C uses a magnetic connector to connect to the charger, and here are a few key points:
- Check the contacts. There should be two metal contacts (gold) on the back of the bracelet. If they are contaminated or oxidized, gently wipe them with a cotton swab dipped in alcohol.
- Connect the charger correctly. The magnetic connector should fit tightly to the contacts. If the connection is weak, the bracelet will not charge.
- Use the original adapter. The charger power should be 5V/1A. Power supplies from phones (e.g., fast charging) can damage the battery.
- Wait for the indication. If you connect the bracelet correctly, a charging icon (lightning battery) should appear on the bracelet screen. If it's not there, try another cable or socket.
The full charge time of the Mi Band 4C is about 2 hours, if the bracelet shows no signs of charging for more than 30 minutes:
- 🔌 Try another one. USB-port.
- 🔄 Turn over the bracelet - the contacts may not match.
- 🔋 Check the cable for damage (curves, insulation breaks).
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If the bracelet is not charged, try connecting it to the USB-Sometimes the problem is a faulty power supply, and the PC port gives you a stable voltage.
Standard Enablement of Mi Band 4C: Step-by-step instructions
If the bracelet is charged but not turned on, follow this instruction, which is suitable for new devices and bracelets after deep discharge (but not after reset!).
☑️ Preparation for the inclusion of the Mi Band 4C
- Open Mi Fit on your phone and click Add Device → Bracelet → Mi Smart Band 4C.
If nothing happens after holding the button:
- 🔋 Bracelet discharged – charge it for another 1-2 hours.
- 🔄 Touch button locked – try tapping the screen several times in a row.
- 📵 Bracelet in power saving mode - connect it to charging and wait for automatic switching on.
⚠️ Note: If the bracelet vibrates when turned on, but the screen remains black, this may indicate damage to the display plume. In this case, self-repair is not recommended - contact the service center.
Forced reset of the Mi Band 4C to factory settings
If the bracelet has been previously linked to another account or is not working properly, a hard reset will be required, which removes all data from the device, including the binding to the Mi Fit.
Method 1: Through the bracelet menu (if the screen is running)
- Swipe your finger up the screen to open the menu.
- Find the Settings (cog icon) and select it.
- Scroll to Settings Reset (or Reset) and confirm the selection.
- The bracelet will reset and be ready for a new tie.
Method 2: Hardware reset (if the screen does not respond)
- Turn off the bracelet from charging (if it was connected).
- Press and hold the touch button for 20-30 seconds until you feel a triple vibration.
- Release the button. The bracelet will reset and reset to factory settings.
After discharge:
- 🔄 The bracelet will automatically turn on and show the welcome screen.
- 📱 Tie it back again via Mi Fit (instructions in the previous section).
- ⚠️ If the reset did not help - the problem may be in the firmware or hardware.
What to do if the reset does not work?
Diagnostics: Why Mi Band 4C is not turned on
If the bracelet doesn't respond to charging, buttoning, or resetting, the problem may be hardware or software, and the table below shows the most common causes and ways to fix them.
| Symptoms. | Possible cause | Decision |
|---|---|---|
| No response to charging, screen black | Full battery discharge | Charge 2-3 hours with the original cable, if it doesn't work, check the contacts. |
| Vibrates when connected to charging, but does not turn on | Firmware failure or memory damage | Try forced reset, if it doesn't work, flash it into the service. |
| The screen flashes but doesn't load | Display plume problems | Contact the service center (self-repair is not recommended). |
| The bracelet is switched on but immediately switched off. | Failure of the battery or power controller | Replace the battery (possibly at home if you have experience). |
| Mi Fit app doesn't find bracelet | The bracelet is tied to another account | Reset the bracelet to factory settings and tie it back. |
If none of these methods worked, check the bracelet for physical damage, such as cracks in the body, battery bloating, or contact oxidation, which indicate that repair or replacement is needed.
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In 80% of cases, the problem with the Mi Band 4C is solved by charging, resetting or cleaning contacts. If the bracelet does not show signs of life after all the manipulations, the hardware (battery, board, display) is most likely to malfunction.
Firmware Update: When It Can Help
Sometimes the bracelet fails to turn on or malfunctions due to outdated firmware.
- 🔄 Self-involved reboots.
- 📵 Lack of response to touch.
- 🔋 Quick battery discharge.
To update the firmware:
- Make sure the bracelet is at least 50% charged.
- Open the Mi Fit and go to the bracelet profile.
- Click on the three dots in the top right corner and select Firmware Update.
- If a new version is available, click Update and wait for the process to be completed (the bracelet will reboot automatically).
⚠️ Warning: Don't interrupt the upgrade process! If the bracelet disconnects from the phone or runs out during firmware, it could cause a complete failure. Charge the device to 100% before upgrading.
If there is no update button in Mi Fit, it means that you already have the latest version of the software installed, in which case the problem is not the firmware.