The Xiaomi Mi Band 4 fitness bracelet remains a popular gadget even years after its release, with its reliability and functionality appreciated by millions of users. However, over time, the device can start to malfunction: do not sync data, “hang” when connecting or stop displaying notifications altogether, in 90% of these cases, a complete resetting of settings and subsequent reconnection to the smartphone helps.
In this article, you will find 3 proven ways to reset (via the app, physical button and hidden menu), as well as step-by-step instructions for re-binding to Mi Fit or Zepp Life. We have taken into account all the nuances from the differences between firmware to the features of working on Android 14 and iOS 17. If your bracelet “forgot” your phone, does not respond to touch or shows the error “failed to connect” – this guide will help bring it back to life without using the service.
When do I need to reset Mi Band 4?
Reset the bracelet settings should not be the first problem, but only in specific cases. Here are 5 signals that the device needs a “hard reboot”:
- 🔄 The bracelet does not sync with the application for more than a day, Bluetooth is turned on and the phone “sees” the gadget.
- 📱 After changing the smartphone, Mi Band 4 does not connect to the new device, giving an error “The device is already tethered».
- 🔋 The battery discharges in a few hours (with normal use, the bracelet keeps a charge for 5-7 days).
- 🖱️ The screen does not respond to touch or “clicks” spontaneously.
- 🔄 After updating the firmware, artifacts appeared on the display (strips, flickering, incorrect symbols).
If the problem doesn’t make it to this list, try rebooting the bracelet first (hold the 10 seconds button) or reinstalling the Mi Fit/Zepp Life app. Factory reset is the last resort, after which all data (steps, sleep, workouts) will be deleted without recovery.
⚠️ Note: If the Mi Band 4 bracelet was purchased from hand, resetting does not guarantee removal of the binding to the previous owner.In some cases, you will need to contact the seller to untie the gadget through your Xiaomi account.
Method 1: Reset via Mi Fit or Zepp Life
The safest method is to use official software, which is suitable if the bracelet is connected to the phone and responds to touch, the instructions are the same for both programs (Mi Fit and Zepp Life), the only differences are in the location of menu items.
Steps for Android and iOS:
- Open the Mi Fit or Zepp Life app.
- Go to the Profile section → Mi Smart Band 4 (or the name of your bracelet).
- Scroll down and select Untie the device (in Zepp Life - Delete the device).
- Confirm the action. The bracelet will automatically reset and disconnect.
If there is no “Untie” item, update the app to the latest version. In older versions of Mi Fit (until 2022), the reset may have been hidden in the bracelet settings → Additional → Reset.
Update Mi Fit/Zepp Life to the App Store or Google Play
Make sure the bracelet is at least 50% charged.
Connect your phone to the Internet (to sync)
Take screenshots of important data (if it is not synchronized)-->
Method 2: Hardware reset button (if bracelet does not respond)
If the Mi Band 4 screen doesn’t turn on, freezes on the logo, or doesn’t respond to touch, use a physical button under the capsule, which works even when the battery is dead (if at least 5% of the charge remains).
Instructions:
- Remove the bracelet capsule from the strap.
- On the back, find a small recess that says "Reset" (near the charging contacts).
- Take a paper clip or toothpick and press the reset button for 10-15 seconds until you feel a slight vibration.
- Release the button. The bracelet will reset and show the Mi logo.
If the bracelet doesn't turn on after reset, plug it into a charge for 30 minutes -- maybe the battery is completely drained. If charging doesn't work, the problem could be a damaged battery or contacts.
⚠️ Warning: Do not use metal objects (needles, knives) to press the button - this can damage the contacts.
What to do if the reset button does not work?
Method 3: Reset via hidden menu (for power users)
This method is suitable if the bracelet is turned on but not connected to the phone and the standard reset via the application is not available.We will use the hidden engineering menu that is found in all Xiaomi devices based on Nordic nRF52832 (the chip used in the Mi Band 4).
Step-by-step:
- On the bracelet, go to Settings → About the device.
- Tap 5 times in a row on the line with the firmware version (for example, 1.0.9.54).
- You'll see a Debug menu. Select Factory Reset.
- Confirm the reset by pressing ✓.
Once rebooted, the bracelet will be like a new one, with a standard dial and no account binding, which is not documented in the official instructions, but works on all versions of the Mi Band 4 firmware.
| Resetting method | When to apply | Pluses | Cons |
|---|---|---|---|
| Through Mi Fit/Zepp Life | Bracelet connected and reacts to touch | Safely, saves data in the cloud | Requires a working Bluetooth |
| Hardware Reset button | The bracelet is "hang" or not turned on | It works without a phone. | Risk of damaging contacts |
| Debug's Hidden Menu | No access to the app, but the screen is running | Quick, no need for tools. | Unobvious way, there is a risk of error |
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If the bracelet does not turn on after reset, try to hold it on charging for at least 1 hour - sometimes the power controller "falls asleep" after a deep discharge.
How to Reconnect Mi Band 4 to Your Phone After Reset
Once reset, the bracelet becomes "clean" - it needs to be tied to a Xiaomi account and synced with the phone.The process takes no more than 5 minutes, but there are nuances for Android and iOS.
Instructions for Android:
- Install the latest version of Mi Fit or Zepp Life from Google Play.
- Sign up or sign in to your Xiaomi account (required!).
- Turn on Bluetooth and geolocation on the phone (without them, connection is impossible).
- In the app, click Add Device → Bracelet → Mi Smart Band 4.
- Follow the instructions on the screen: confirm the pairing on the phone and bracelet (it will appear code).
Instructions for iOS (iPhone):
- Download Mi Fit from the App Store (Zepp Life for iOS is worse).
- In your iPhone settings, turn on Bluetooth and allow Mi Fit to use geolocation (Settings → Privacy → Geolocation Services).
- In the app, select “Profile → Add Device”.
- If the bracelet is not located, reboot Bluetooth on the iPhone (turn off / turn on at the Control Point).
On iPhone, the connection may take longer due to iOS restrictions on working with Bluetooth LE. If the bracelet is not determined, try disabling the VPN or changing the region of the Xiaomi account to China (in profile settings).
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On iPhone, the Mi Band 4 bracelet can only connect via Mi Fit – the Zepp Life app often gives an error “Can’t find the device.”
Frequent Connection Errors and How to Fix Them
Even after resetting, the bracelet may not connect to the phone.-5 mistakes and their solutions:
- 🔴 "Device is already tied" error means the bracelet is still linked to the previous account. Try: Reset the bracelet again (via Reset button). Log in with the same account the previous owner used and untie the gadget.
- 🔴 «Unable to connect. Try again.Bluetooth problem.Solution: Reboot phone and bracelet.Forget Mi Band 4 device in your phone's Bluetooth settings and try to reconnect.On Android, turn off power saving mode for the Mi Fit app.
The bracelet does not vibrate when connected
You may have the vibration turned off in the settings. Go to Mi Fit → Bracelet settings → Notifications and turn on the option.
If none of these methods worked, check to see if your Xiaomi account is blocked for suspicious activity.
How to recover data after resetting
Once reset, all local data (steps, sleep, training) on the bracelet is permanently deleted, but if it was synchronized with the Xiaomi cloud, it can be restored.
Instructions:
- Connect the bracelet to the same Xiaomi account that was used before the reset.
- Open Mi Fit → Profile → Mi Smart Band 4 → Synchronize data
- Wait until the process is completed (it can take up to 10 minutes).
If the data is not recovered:
- Check if synchronization is enabled in your account settings (Mi Fit → Profile → Account Settings → Data Synchronization).
- Make sure the bracelet is connected to the internet via your phone (turn on your mobile data or Wi-Fi).
If sync didn’t work before reset, the data is lost forever, in which case you can try to recover some of the information from Google Fit backups (if integration was previously enabled).