Why the phone doesn’t see the Xiaomi Mi Band 4 bracelet: a complete troubleshooting guide

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular wearables due to its combination of functionality and affordable price. However, many users face the problem when their smartphone suddenly stops “seeing” the bracelet via Bluetooth – the device does not appear in the list of available for connection, the Mi Fit or Zepp Life application gives a synchronization error, and attempts to reconnect fail.

In this article, we’ll look at all the possible reasons why the Mi Band 4 might be invisible to the phone, from the banal (battery) to the technical (firmware failures or Bluetooth stack conflicts), and give you step-by-step instructions for diagnosing and troubleshooting, as well as tips for preventing similar problems in the future.

If your bracelet is no longer identified by your phone after a software update, fall or prolonged inactivity, do not rush to carry it to the service. In 90% of cases, the problem can be solved independently in 10-15 minutes, following our recommendations.

1. Checking the basic connection conditions

Before you delve into the settings of your phone or bracelet, make sure that the minimum requirements for successful pairing of devices are met. Often the problem lies in the little things that users do not pay attention to.

First, check the bracelet's charge. The Mi Band 4 won't show up in the Bluetooth device list if the battery level is critically low (less than 5%). Connect the bracelet to the charger for 10-15 minutes - the charging indicator (red or green LED) should light up. If the indicator doesn't respond, try another cable or power supply.

Secondly, make sure that Bluetooth on your phone is on and working correctly. On Android, check this in the Settings menu → Connections → Bluetooth, on iPhone, in Settings → Bluetooth. Try connecting another device (such as headphones) to your phone to prevent hardware failure of the module.

• 🔋 Bracelet charge: connect to charging, wait for the indication (red / green LED).
• 📱 Bluetooth on your phone: turn on visibility mode, try connecting another device.
• 📶 Distance between devices: maximum distance for pairing - 10 meters without obstacles.
• 🔄 Reboot: Reboot both the phone and the bracelet (for Mi Band 4 – remove and put on the strap or hold the touch button for 10 seconds).

If the basics are met but the bracelet is still not visible, move on to the next section.Special note: an iPhone with iOS 16+ may require additional permission to access Bluetooth for the Mi Fit app, as we will discuss below.

2.Conflicts in the Mi Fit/Zepp Life app

A common cause of connectivity problems is malfunctions in the official Mi Fit app (or its successor, Zepp Life), which is responsible for synchronizing data and managing the bracelet, and its malfunctioning can block device detection.

The first step is to update the app to the latest version. Outdated versions may not support new bracelet firmware or contain compatibility errors. For Android, check for updates in Google Play, for iOS, in the App Store. If the update doesn't work, try the following:

• 🗑️ Cache Clearing: On Android, go to Settings → Annexes → Mi Fit → Memory. → Clear the cache.
• 🔄 Reinstall: Remove the app, restart the phone and install it again.
• 📋 Data reset: in the application settings, find the option “Disable device” or “Delete bracelet”, then try to connect again.
• 🔒 Permissions: On iOS, check that the app has Bluetooth access (Settings) → Confidentiality → Bluetooth).

If the bracelet never appears on the list after reinstalling the app, try using alternative connectivity programs, such as Notify & Fitness for Mi Band (Android) or Mi Bandage (iOS), which sometimes cope with pairing where the official software fails.

Delete the app cache|Update to the latest version|Reinstall the application|Check Bluetooth (iOS) permissions)|Try alternative software-->

3. Bluetooth problems on the phone

If the bracelet is not visible in either the Mi Fit or the standard Bluetooth menu, the problem may be a hardware or software failure of the Bluetooth module on the phone, especially for Android devices, where Bluetooth drivers are often updated along with firmware and may contain errors.

Start by rebooting the Bluetooth module:

1. Turn off Bluetooth in your phone settings.
2. Turn on Flight Mode for 30 seconds, then turn it off.
3. Re-activate Bluetooth and try to find the bracelet.

If that didn't work, check your power saving settings. On some phones (e.g. Xiaomi, Samsung, Huawei), aggressive battery optimization can block Bluetooth background work.

• 🔋 Settings → Battery → Battery Optimization (or Energy Saving) and Disable Optimization for Mi Fit.
• ⚙️ Settings → Annexes → Mi Fit → Battery and select "No restrictions».

For Xiaomi/Redmi owners, check the Security settings → Autostart and enable autorun for Mi Fit. On iPhones, there are usually no similar problems, but sometimes resetting network settings (Settings → Main → Move or Reset → Network Reset) helps.

4.Reset and flashing Mi Band 4

If none of the previous methods worked, the problem may be the bracelet's firmware, which can occur after a failed update, physical impact (fall, moisture) or prolonged inactivity, in which case a hard reset or flashing will help.

Reset to factory settings is performed on the bracelet:

1. Remove the bracelet from your hand and place it on a flat surface.
2. Press and hold the touch button under the screen for 10-15 seconds until the vibration and Mi logo appear.
3. After resetting, the bracelet will reboot and be ready for a new connection.

If the reset doesn't work, you'll have to re-flash the bracelet.

• 💻 Computer with Windows or macOS.
• 🔌 Mi Band 4 connection cable (usually bundled with charging).
• 📁 Firmware for your version of the bracelet (you can download on the forums) 4PDA or XDA Developers).
• 🛠️ Firmware software, such as Mi Band 4 Tool or Gadgetbridge.

The firmware process requires caution - interruption can lead to a complete loss of performance of the bracelet. If you are not confident in your abilities, you should contact the service center. For detailed firmware instructions for specific versions of the Mi Band 4 (for example, 1.0.9.54 or 1.0.7.14) look at thematic forums.

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Before you run the firmware, back up the bracelet data via the Mi Fit app (if it's still connected). After you run the firmware, all settings will reset!

5. Compatibility of telephone and bracelet

Not all phones work equally well with the Mi Band 4. Connection issues can arise from:

• 📱 An outdated version Android/iOS (for example, Android 6.0 or lower, iOS 11 older).
• 🔄 Bluetooth versions incompatible (bracelet uses Bluetooth 5.0) LE, Older phones can only support Bluetooth 4.0).
• 🛡️ Manufacturer policies (e.g. Huawei or Honor sometimes block the connection of other brands’ devices).

Check out the minimum requirements for the Mi Band 4:

If your phone doesn’t meet the minimum requirements, try connecting the bracelet to another device (like a tablet or a friend’s phone). If the second device is successful, the problem is your smartphone.

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Mi Band 4 officially supports Android 5.0+ and iOS 9.0+, but for stable operation, Android 8.0/iOS 13.0 and later is recommended.

6. Physical damage and hardware malfunctions

If all software methods have been tried, but the bracelet is still undetectable, it is worth checking it for physical damage. Even minor falls or moisture can disable the Bluetooth module or charging contacts.

Signs of hardware malfunctions:

• 🔴 Bracelet is not charged (no indication when connected to charging).
• 💧 Under the screen or on the case, traces of corrosion are visible (after water enters).
• 🔊 No vibration when touching or notifying.
• 🔋 The battery is discharged in a few hours (normally - 5-7 days).

For diagnosis:

1. Check the charging contacts on the bracelet and cable, they should be clean, without oxidation, and clean them with alcohol or eraser if necessary.
2. If the bracelet has been in water, dry it in rice or silica gel for 24 hours.
3. Try connecting the bracelet to another charger (sometimes the problem is in the cable, not the bracelet).

If the bracelet does not show signs of life (does not vibrate, does not charge, does not turn on), you will most likely need to change the battery or repair the board. In this case, contact the Xiaomi service center or the trusted electronics repairmen. The average cost of repairing the Mi Band 4 is from 800 to 1500 rubles (depending on the malfunction).

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If the bracelet falls into water, DO NOT turn it on right away! Dry for 24 to 48 hours, then try charging. Turning on the wet device can cause a short circuit.

7. Alternative ways of connecting

If the standard Mi Fit connection doesn’t work, try alternative methods that can help in cases where the problem is that the app is in conflict with the firmware of your phone or bracelet.

Method 1: Connecting through third-party applications

Some apps, like Notify & Fitness or Tools & Mi Band, support Mi Band 4 connectivity bypassing official software. They often update faster and can bypass the phone manufacturer's restrictions. Download one of these apps from Google Play or the App Store and try connecting through it.

Method 2: Using the Developer Mode (Android)

On some phones (such as Xiaomi or Samsung), enabling developer mode and changing Bluetooth settings helps detect the bracelet:

1. Activate Developer Mode: Go to Settings → About Phone → MIUI/software version and press 7 times on the item “Build Number”.
2. Back to Settings → Additionally. → For developers.
3. Find the Bluetooth debugging option and turn it on.
4. Restart your phone and try to connect again.

Method 3: Connecting via computer

If the phone stubbornly doesn't see the bracelet, but you're sure it's working, try connecting it to your PC through Gadgetbridge, which will help you check if the bracelet responds to commands at all, and if the PC connection is successful, the problem is exactly with the phone or its settings.

FAQ: Frequent questions about connecting Mi Band 4