Connecting Xiaomi Mi Band 4 to your phone via Bluetooth: full instructions with nuances

Why Mi Band 4 is not connected and what to do about it

Fitness bracelet Xiaomi Mi Band 4 It's still one of the most popular activity tracking gadgets, despite the release of new models, but even a device like this that's tested sometimes has trouble connecting over Bluetooth. Users are faced with the fact that the bracelet is not visible in the list of available devices, the connection is constantly broken or the Mi app. Fit/Zepp Life gives an error: "I couldn't connect".

In 90% of cases, the problem is not with the bracelet itself, but with the wrong sequence of actions, outdated smartphone firmware or conflict with other Bluetooth devices. This article will help you understand how to properly activate Bluetooth on the Mi Band 4 and sync it with the phone even if standard methods did not work. We will look not only at the basic settings, but also at hidden nuances - for example, why the bracelet can "forget" pairing after a phone reboot or how to reset the connection settings without losing data.

Preparation before connection: 5 mandatory steps

Before trying to connect the Mi Band 4 to your phone, make sure all the preconditions are met.Non-point skipping can cause Bluetooth to crash.

• 📱 Update the application: Install the latest version of Mi Fit (for the first time) Android/iOS) The older versions often don't support new Bluetooth protocols.
• 🔋 Bracelet charging: Battery level should be at least 20%.In low charge, the Mi Band 4 can automatically turn off the Bluetooth module to save energy.
• 📲 App Permissions: In your phone settings, check that Mi Fit has access to Bluetooth, Notifications and Physical Activity (on Android) or Health (on iOS).
• 🔄 Reboot devices: Reboot both the bracelet and the smartphone. This will reset temporary errors in the operation of Bluetooth modules.
• 🚫 Disable other gadgets: If your phone already has headphones, speakers, or other wearables connected, turn them off – they can cause interference.

On Android 12+ and iOS 15+, systems actively block the background of applications, which can interrupt the connection to the bracelet. For example, on iPhone you need to manually allow Mi Fit to use Bluetooth in the background (Settings → Mi Fit → Bluetooth).

The latest version of Mi Fit/Zepp Life| is installed

Charge level of Mi Band 4 ≥ 20%|

Appendix has all the necessary permissions |

Bracelet and phone rebooted |

Other Bluetooth devices disabled-->

Step-by-step: how to turn Bluetooth on Mi Band 4

Unlike smartphones, the Mi Band 4 doesn't have a separate Bluetooth switch on the menu, and it activates automatically when you first connect to your phone, and your task is to properly initialize the pairing process.

1. Activate the bracelet: Click on the touch button below the screen to wake up Mi Band 4. scroll through the menu to More (three dots) → Settings → Reset. Select Disable (this is not a full reset, but just break the current connection).
2. Open Mi Fit or Zepp Life on your phone. If the bracelet has already been connected, remove it from the list of devices (Profile → Mi Band 4 → Delete the device).
3. Start searching: In the main app menu, tap on Add Device → select Bracelet → Mi Smart Band 4. Click Connect.
4. Confirm pairing: The bracelet will have a 6-digit code on its screen. Compare it to the code in the app and click Confirm on your phone.
5. Update the firmware: Once connected, the app will suggest updating the bracelet software. Don't refuse - new versions fix Bluetooth errors.

If the bracelet “hangs” or the code does not appear at the stage of code confirmation, try forcibly rebooting the Mi Band 4: connect it to charging, hold the touch button for 10 seconds until the Mi logo appears.

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If the verification code on the bracelet and the app don't match, check if the Mi Band 4 is connected to another phone. One device can only pair with one smartphone at a time.

Table: Common Bluetooth Errors and Their Solutions

Even after you connect properly, the connection can be interrupted, and below is a list of typical problems and ways to fix them.

If none of these methods worked, try resetting the bracelet to factory settings. Go to Settings → More → Reset → Confirm. Attention: this will delete all data from the bracelet, including activity history.

Not visible on the Bluetooth | list.

It's always off.|

Not synchronizing data |

Another problem.|

No problem.-->

Bluetooth Hidden Settings: How to Improve Connection Stability

Few people know, but there are hidden options in the Mi Band 4 that affect how Bluetooth works, and can be changed through informal apps or engineering menus.

One of the most useful tricks is to change the poll interval. By default, the bracelet communicates with the phone every 5 minutes, but this interval can be reduced to 1 minute for a more stable connection:

1. Install the Notify & Fitness for Mi Band app (available for Android).
2. Connect the bracelet through this application (allow all requests).
3. Go to Settings → Connection interval and select 1 minute.
4. Save the settings and reset the bracelet.

Another useful parameter is connectivity priority, and if you have multiple Bluetooth devices, you can give Mi Band 4 the highest priority.

• On Android: Settings → Connected devices → Settings (⚙️) → Priority device.
• On iOS: This option is not available, but you can manually disable other gadgets when using the bracelet.

How to connect Mi Band 4 to a second phone (without data loss)

If you want to use a multi-smartphone bracelet (like a work and personal one), it's important to do it right so you don't lose your activity history. The standard way is to disconnect the bracelet from the first phone and connect it to the second, but that will result in all data being deleted from the device.

To save information, follow this instruction:

1. Sync data: On the first phone, open Mi Fit, wait for full sync (check that all steps, pulse and workouts are uploaded to the cloud).
2. Export settings: In Mi Fit, go to Profile → Mi Band 4 → Settings → Export data (if available). Save the file to your phone.
3. Turn off the bracelet: In the same menu, click Remove the device.
4. Connect to the second phone: Install Mi Fit on the second phone, log in to the same Xiaomi account and reconnect the bracelet. Data will be pulled from the cloud.

If you use different accounts on your phones, the data is not automatically synced, in which case, before you connect to the second device:

1. Reset the bracelet to factory settings (Settings → More → Reset).
2. Connect to your new phone as a new device.

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Use one Xiaomi account on all devices so that the data from the bracelet is automatically synced between phones.

What to do if Bluetooth on Mi Band 4 doesn’t work at all

If the bracelet doesn't respond to connection attempts or the Bluetooth module is completely disabled, the reasons may be hardware or software.

Software failures (solved without repair):

• 🔄 Hard reset: Connect the bracelet to charge, hold the button for 20 seconds until the vibration appears. This will reset all settings, including Bluetooth.
• 📱 Reinstall the application: Remove Mi Fit, clear the cache and data, then install again.
• 🔧 Manual firmware installation: If automatic update does not work, download the firmware from the site mi-band.ru and sew through Mi Fit.

Hardware malfunctions (require repair):

• 🔋 Battery damaged: If the bracelet does not hold charge (discharges in a few hours), the Bluetooth module can be turned off to save energy.
• 📡 Bluetooth antenna malfunctions: Often occurs after falls or moisture is hit. check if the charging indicator is on when connected to USB.
• 🛠️ Contact oxidation: If the bracelet has been in water, the contacts under the lid may have oxidized. Carefully dry the device with a hair dryer (cold air!) for 10-15 minutes.

⚠️ Warning: If after a hard reset, the bracelet does not turn on or respond to charging, do not try to disassemble it yourself - this will lead to loss of water protection.

FAQ: Frequent questions about Bluetooth on Xiaomi Mi Band 4