How to reboot the Xiaomi Mi Band 4 fitness bracelet: from basic reset to hidden features

The Xiaomi Mi Band 4 remains one of the most popular fitness bracelets even years after its release, with its reliability and functionality appreciated by millions of users. However, like any electronics, the device sometimes fails: it stops syncing with the smartphone, “hangs” on the logo when turned on or does not respond to touch, and in 80% of cases, these problems are solved by simply rebooting or resetting settings.

In this article, you will find 5 proven ways to reboot, from standard shutdown to hidden engineering commands, and we will also discuss when a soft reset is enough, and when a hard reset is required, and how to avoid data loss. If your Mi Band 4 bracelet dies after a firmware update or doesn't turn on after a discharge, there are solutions here.

1.When you need to reboot Mi Band 4: symptoms and causes

The Xiaomi Mi Band 4 bracelet doesn’t have an operating system as usual, but its firmware may malfunction. Here are key signs that the device needs to be restarted:

• 🔄 Screen freeze: The bracelet does not respond to touch, shows one screen (such as time or steps) and does not switch.
• 📵 No synchronization: data is not updated in the Mi app Fit/Zepp Life despite Bluetooth connectivity.
• 🔋 Charging problems: The bracelet does not turn on after connecting to the charger or shows “0%” despite prolonged charging.
• 🔄 Cyclical reboot: the device is constantly switched on and off, without booting until the end.
• 📱 Errors after the update: the bracelet “slowed” after installing a new firmware through the application.

The causes of failures are usually divided into two groups:

1. Software: firmware errors, conflicts with the application on the smartphone, failure in the synchronization data.
2. Hardware: battery discharge "to zero", damage to charging contacts, physical defects of the screen.

Rebooting helps in the first case: if the problem is hardware (for example, the bracelet does not respond to charging or the screen is physically damaged), repair will be required.

2. Method 1: Soft reboot (via the bracelet menu)

This is the safest method, which does not lead to data loss, suitable if the Mi Band 4 bracelet responds to touch, but does not work stable.

Instructions:

1. Swipe your finger across the bracelet screen left-right until you find the item Still (or More on English firmware).
2. Slip it, then scroll down to Reboot.
3. Confirm the action – the bracelet will turn off and turn on again (it will take ~ 10 seconds).

If you don't have Reboot, your firmware may be outdated. Update it through Mi Fit or Zepp Life.

Remove the bracelet from your hand (to avoid accidental touch)|

Make sure the battery is >20 percent |

Close the Mi Fit/Zepp Life app on your smartphone |

Wait 1-2 minutes after rebooting before synchronization-->

Method 2: Hard reboot (button on the body)

If the Mi Band 4 bracelet doesn't respond to touch or hangs on the logo, hardware reboot through a hidden button will help.This method doesn't erase data, but resets the current state of the firmware.

Step-by-step:

1. Take the bracelet capsule off the strap. On the back (under the heart rate sensor), find a small hole -- this is a hidden reset button.
2. Take a paper clip, toothpick or a special tool for SIM-Carefully press and hold the button 10-15 seconds.
3. The bracelet vibrates and reboots. If the screen is out, release the button and wait for ~30 seconds.

Important: Do not use metal objects with sharp edges (needles, pins) - they can damage the contacts of the button. If the bracelet does not respond to the hold of the button, try to connect it to charging for 5-10 minutes, then repeat the procedure.

Method 3: Reset to factory settings (Hard Reset)

Hard Reset completely erases all the data from the bracelet: settings, training history, alarm clocks and paired devices.

• 🔄 The bracelet is cyclically reloaded and not turned on.
• 📱 Cannot connect to a new smartphone after changing the phone.
• 🔧 Preparation of the device for sale or transfer to another user is required.

Instructions for Mi Band 4:

1. Connect the bracelet to the charger (even if it is on).
2. Press and hold the hidden reset button (see Method 2) for 20–25 seconds until the bracelet vibrates 3 times in a row.
3. Release the button. The bracelet will reboot and show the welcome screen (as in the first switch).

After resetting, you will need to reconfigure the bracelet through the Mi Fit or Zepp Life app.

💡

Before reset, back up your data in the app: Go to Profile → Mi Band 4 → Data Backup. This will save your activity history, but not your alarm and notification settings.

5. Method 4: Reboot via Mi Fit/Zepp Life

If the bracelet syncs to the smartphone but is unstable, you can initialize the reboot via the official app, a method that is milder than Hard Reset but more effective than a standard shutdown.

Instructions for Mi Fit:

1. Open the application and go to the Profile section → Mi Smart Band 4.
2. Scroll down and select Disable the device.
3. Confirm the disconnect, then reconnect the bracelet via Add the device.

For Zepp Life:

1. Go to Profile → Mi Band 4 → Device settings.
2. Select Reset settings (this is a soft reset that does not erase data).
3. Confirm the action and wait for the bracelet to reboot.

This method is useful if the bracelet "glues" when synchronized or incorrectly displays notifications.

Method 5: Hidden engineering commands (for power users)

The Mi Band 4 firmware contains hidden commands for diagnosis and forced reboot, which are available through a developer menu that is activated by a special sequence of touches.

How to open the engineering menu:

1. On the bracelet screen, quickly tap the Step icon 5 times in a row (with an interval of ~1 second).
2. Then swipe your finger down-up-down-up-down (like entering a lock pattern).
3. If the sequence is correct, a menu will open with Reboot, Factory Reset and Test Mode items.

Note: not all firmware supports this method. If the menu does not open, your bracelet may have modified firmware (e.g., from Amazfit or custom).

💡

The engineering menu is a powerful tool, but its commands can lead to irreversible consequences (for example, Factory Reset without backup).

7 What to do if the bracelet does not turn on after restarting

If the Mi Band 4 shows no signs of life after any manipulation, check the following:

⚠️ If the bracelet does not respond to charging for more than a day, do not try to disassemble it yourself - inside a lithium-polymer battery that can ignite if damaged.

• 🔌 Check the charger: try another one USB-port or power supply. The contacts on the bracelet should fit tightly to the charging.
• 🕒 Give time to charge: If the battery is completely discharged, it may take up to 30 minutes before the indicator appears.
• 🔧 Clean the contacts: oxidation or dirt on the bracelet/charging contacts can block power.
• 📱 Check the compatibility: Mi Band 4 It does not support charging from powerful adapters (for example, from MacBook). USB-port (5V/1A).

If the bracelet is still not turning on, the battery or power controller may have failed, in which case contact Xiaomi’s service center or consider replacing it with a new model (e.g. Mi Band 7).

8. Frequent mistakes and how to avoid them

Many users are making Mi Band 4 problems worse by making common mistakes.

• 🚫 Interrupt firmware update: If the bracelet is updated through the application, do not turn off Bluetooth and do not remove it from charging.
• 🚫 Use unoriginal charges: cheap substitutes can supply the wrong voltage and damage the battery.
• 🚫 Reset settings without backup: Before Hard Reset export data in the app.
• 🚫 Disassemble the bracelet without experience: inside fragile plumes and a battery that is easily damaged.

Also avoid extremes:

• ❄️ Do not leave the bracelet in the cold (below). -10°C) or under direct sunlight (above) +40°C).
• 💦 Do not immerse in water for more than 30 minutes (despite the claimed water protection of 5 minutes). ATM).
• 🔋 Do not discharge the battery to zero regularly – this reduces its lifespan.

⚠️ Warning: If you bought the Mi Band 4 hand-held, make sure to make a Hard Reset before using.The previous owner could have tied the bracelet to his Xiaomi account, and without a reset you will not be able to configure it.

FAQ: Answers to Frequent Questions