Connecting Xiaomi devices to Bluetooth: from smartphones to smart gadgets

Bluetooth in Xiaomi devices is not just a way to transfer files, but a whole range of functions for communicating with headphones, speakers, fitness bracelets and even smart home appliances. If you're a smartphone that doesn't see the device, if you're a smartphone that's constantly breaking, if you're a speaker that's interrupting, in this article, we're going to look at all the possible connectivity scenarios, from basic to advanced, including hidden settings. MIUI and solving rare errors.

We will pay special attention to the compatibility of Bluetooth versions (from 4.0 to 5.3), as this directly affects the quality of communication and power consumption. For example, headphones Xiaomi AirDots Pro 2 with Bluetooth 5.0 will work more stable with the Redmi Note 12 Pro.+ (Bluetooth 5.3), more than with Redmi 9A (Bluetooth 5.0. Also reveal the secrets of dual audio and audio optimization for gamers.

If you have already tried to connect the device and you have an error: You couldn’t connect or the device was not found, do not rush to blame the technique. In 80% of cases, the problem is solved by setting up the parameters or resetting the Bluetooth cache, we will talk about this in the section on troubleshooting.

1. Preparing Xiaomi devices for Bluetooth connection

Before you look for a new device on the list of available devices, make sure that both gadgets are ready to pair, which will save you from unnecessary attempts and save time.

On Xiaomi smartphones (including: POCO and Black Shark Bluetooth activates via notification curtain or in the Settings menu → Connections and sharing → Important: If you use Power Saving Mode, some Bluetooth features (such as auto-connect) may be limited. → Battery and productivity.

For headphones, speakers and other accessories Xiaomi:

• 🔋 Charge the device at least 30% – at low charge, some models (for example, Mi True Wireless Earphones 2 Basic) do not activate the pairing mode.
• 🔄 Translate the headphones / column to search mode: usually you need to hold the power button for 5-10 seconds until the indicator flashes (the color depends on the model: blue, white or red).
• 📱 Make sure your device isn’t connected to another smartphone or PC – Xiaomi gadgets remember the last connection and can automatically connect to it.

Hidden function MIUI: If your smartphone doesn’t see the device, try turning on the developer mode and activate the Bluetooth debugging option:

1. Go to Settings → About Phone → MIUI version and tap 7 times on this item.
2. Back to Settings → Additionally. → For developers.
3. Find Bluetooth Debugging and turn it on.

This step helps when connecting to non-standard devices (for example, car radios or smart watches of third-party brands).

2. Step-by-step instructions: how to connect Xiaomi to Bluetooth

Consider the universal connection algorithm on the example of the smartphone Xiaomi 13 Pro and headphones Xiaomi Buds 4 Pro. For other models, the steps are similar, but may differ slightly in the interface.

Step 1: Activate Bluetooth on your smartphone

1. Open the settings (cog icon on the desktop).
2. Go to Connections and Sharing → Bluetooth.
3. Move the slider to the position on.

Step 2: Finding and pairing the device

1. Click Device Search (or Add a new device in older versions of MIUI).
2. In the list, find the name of your gadget (such as Mi True Wireless Earphones).If the device doesn't show up, update the list by pulling the screen down.
3. Tap the device name. If required, confirm pairing on both devices (sometimes you need to enter) PIN-The default code is 0000 or 1234).

Step 3: Configure the connection parameters

After successful pairing:

• 🎵 For headphones: Select Sound Priority (e.g. High Quality for Music or Low Latency for Games).
• 🔗 For Auto Connection: Enable the Automatic Connection option in your device settings.
• 📱 For smartphones/tablets: activate Shared Internet if you need to distribute mobile traffic.

Important for gamers: If you connect headphones to play on Black Shark or POCO F5, In Bluetooth settings, select Low Latency (aptX) profile LL). This will reduce the lag to 40–60 ms (versus 100–150 ms in standard mode).

3. Features of connecting different Xiaomi devices

Not all Xiaomi gadgets connect the same way, for example, fitness bracelets Mi Band require an additional application, and smart speakers Mi Smart Speaker supports multi-room sound.

Headphones and TWS-Headsets (AirDots, Buds, FlipBuds):

• 🎧 For monoconnection (one earphone), disable the second in Bluetooth settings or use a special mode (for example, Xiaomi Buds). 3T Pro – triple touch on the sensor).
• 🔋 If the headphones are quickly discharged, turn off device search in their settings (this will reduce power consumption by 15-20%).

Fitness bracelets and smart watches (Mi Band, Watch, Smart Band):

• 📲 Requires installation of Mi Fitness (formerly Mi Fit) or Zepp Life (for newer models).
• 🔄 To synchronize data, enable Autosynchronization in the bracelet settings and allow the application to access notifications.

Smart speakers and soundbars (Mi Smart Speaker, Mi Soundbar)

• 🔊 For a stereo pair, connect two speakers to one smartphone and activate Dual Audio mode in Bluetooth settings.
• 🎶 Use the protocol to stream music AAC (Best quality for Apple Music or aptX (for Tidal and local files).

Automatic and Android Auto:

• 🚗 If the tape recorder can’t see the smartphone, update its firmware or reset the Bluetooth settings in the car.
• 📱 In Xiaomi settings, enable Visibility for all devices (in the Bluetooth menu) → Three points. → Visibility).

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If your Xiaomi headphones are connected but the sound is interrupted, try turning off the Absolute Volume option in Bluetooth settings, which will solve the problem of mismatching volume levels between devices.

4. Solving Bluetooth Connection Issues on Xiaomi

Even with the right settings, you can get errors.-5 Problems and ways to resolve them based on the analysis of forums 4PDA and Mi Community.

Problem 1: No device found

• ✅ Solution: Make sure the gadget is paired (the indicator flashes quickly). If it's headphones, put it in the case and get it back.
• ✅ Check if the connection is blocked by Flight Mode or VPN.
• ✅ Reboot both devices.

Problem 2: Persistent communication gaps

• ✅ Turn off Wi-Fi during the test – sometimes 2.4GHz channels interfere with Bluetooth.
• ✅ In the developer settings (Settings) → Additionally. → For developers, install the Bluetooth codec in SBC (The most stable, though not the highest quality).
• ✅ If the problem is POCO X3 Pro or Redmi Note 10, update the firmware - in older versions MIUI There was a bug with a Bluetooth driver.

Problem 3: The sound is interrupted or delayed

• ✅ For games: Enable Game Mode in the Notification Curtain and select Low Latency profile.
• ✅ For music: Turn off the Equator in the sound settings - it can create additional load.
• ✅ If you are using Xiaomi Buds 3 Pro, update their firmware through the Mi Earphones app.

Problem 4: The microphone in the headset is not working

• ✅ In Bluetooth settings, tap the gear icon next to the device and select Use for calls.
• ✅ Check if access to the microphone is blocked for applications (such as WhatsApp or Telegram).
• ✅ If there's a problem with Redmi 9T, Reset network settings: Settings → System system → Reset → Resetting network settings.

Problem 5: Bluetooth shuts down on its own

• ✅ Turn off the Adaptive Battery in Settings → Battery and productivity → Battery settings.
• ✅ Add an app that uses Bluetooth (like Spotify) to the list with no limitations in battery settings.
• ✅ If nothing helps, reset your Bluetooth settings: Settings → Connections → Bluetooth → Three points. → Reset the settings.

⚠️ Attention: Xiaomi smartphones with Qualcomm Snapdragon chip 8xx (for example, Xiaomi 12S Ultra) can cause Bluetooth and Wi-Fi conflict at 2.4 GHz Solution: In router settings, set the Wi-Fi channel manually (e.g., channel 1 or 11) or switch to 5 GHz.

5. hidden Bluetooth functions in MIUI, which you didn't know

MIUI It offers some non-obvious Bluetooth features that can significantly improve the user experience:

1. Dual Audio (Dual Connection)

It allows you to connect two audio output devices at the same time (for example, headphones and a speaker).

1. Connect the first device via Bluetooth.
2. Enable the second device in pairing mode.
3. In Bluetooth settings, tap on three points. → Dual Audio → Select the second device.

Note: the feature only works on smartphones with Bluetooth 5.0+ (for example, Xiaomi 11T Pro, POCO F4 GT).

2. Automatic switching between devices

If you have multiple Xiaomi gadgets (such as a smartphone and tablet), you can set up automatic switching between them:

1. Connect the headphones to both devices.
2. On the second device, in Bluetooth settings, enable Priority Connection.
3. The sound will switch automatically when playing the media.

3. Sound optimization for different scenarios

In the settings of the connected device (cog next to the name), you can select:

• 🎮 Game mode - minimum delay (suitable for PUBG Mobile or Call of Duty).
• 🎵 High quality – the best bitrate for music (using the aptX codec) HD or LDAC).
• 🗣 Talk Mode – Improves Voice Transmission for Calls.

4.Fast connection via widget

Add the Bluetooth widget to the main screen:

1. Long press on the free space of the screen → Widgets.
2. Find Bluetooth in the list and drag it to the screen.
3. Now you can turn Bluetooth on/off and connect to devices in one tap.

5. Bluetooth file transfer (yes, it still works!)

Although this method is outdated, it can be useful in places without the Internet:

1. Turn on Bluetooth on both devices.
2. On the sending device, select the file → Share → Bluetooth.
3. Select the target device from the list.
4. On the receiving device, confirm the receipt of the file.

Transmission speed: ~1-2 MB/s (depending on the Bluetooth version).

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Dual Audio is only available on smartphones with Bluetooth 5.0 and later, but it is not available on older models (e.g. Redmi 5 with Bluetooth 4.2).

6. Compatibility of Xiaomi devices according to Bluetooth versions

Bluetooth not only controls data transfer speed, but also connection stability, range and power consumption, and the table below shows version comparisons and support for Xiaomi devices.

If your device supports Bluetooth 5.0+, But you don’t notice the benefits (e.g. low power consumption), check it out:

• 🔋 Is Adaptive Bluetooth enabled in the battery settings.
• 📱 Is the firmware of headphones / speakers updated (via the proprietary application).
• 🛠 Are there third-party Bluetooth “optimizers” installed (they can block new features).

Example of the case: Redmi Note 11 Pro+ (Bluetooth 5.2 complained about frequent communication interruptions with Xiaomi Buds 3T Pro. It turned out that the codec was selected in the developer settings LDAC, which is unstable at a distance of more than 5 meters. AAC problem gone.

⚠️ Note: On devices with MediaTek Helio (e.g. Redmi) 10C) There may be no support for aptX codecs and LDAC. In this case, the maximum sound quality — AAC.

7 Safety when using Bluetooth on Xiaomi

Bluetooth is not only a convenience, but also a potential vulnerability to hacker attacks (e.g. BlueBorne or other cyber attacks). BIAS). Follow these rules to protect your data:

1. Turn off Bluetooth when not in use

Even in standby Bluetooth can be used to track your location through MAC-The address. MIUI You can set up an automatic shutdown:

1. Go to Settings → Connections → Bluetooth.
2. Put three points on it. → Automatic shutdown.
3. Set a timer (for example, 10 minutes without activity).

2. Use "Hidden Mode"

To prevent your device from being visible to outsiders:

1. In Bluetooth settings, select Visibility.
2. Set it Hidden for all devices.
3. Now you can connect only those gadgets that you have added manually.

3. Update firmware

Old versions. MIUI There were vulnerabilities that allowed you to connect to your smartphone without confirmation:

• 🛡 V MIUI 11 and below was a hole in protocol AVRCP, remotely control music playback.
• 🔄 V MIUI 12.5 corrected the bug with BLE (Bluetooth Low Energy, which could steal data from fitness bracelets.

Check the relevance of the firmware: Settings → About the phone → System update.

4. Check the connected devices

Regularly review the list of associated devices and remove unknowns:

1. Open Settings → Bluetooth.
2. Put the gear icon next to the device.
3. Choose to Delete (or Forget)

5.Use.Use. VPN when transmitting sensitive data

If you are transferring files over Bluetooth in public places (such as a cafe or airport), turn on the data. VPN. This won’t protect the Bluetooth connection itself, but it will make it harder to intercept traffic if an attacker gains access to your device.

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To check if an unknown device is connected to your smartphone, open Settings. → Bluetooth → Connection history. This is all the devices that have ever connected to your phone.

8. Frequently Asked Questions (FAQ)