Connecting two Bluetooth devices at the same time on Xiaomi: the complete guide

Xiaomi smartphone owners often have to connect two Bluetooth gadgets to the device at once — for example, headphones and a fitness bracelet, or a speaker and a wireless keyboard. However, standard MIUI settings do not always allow you to do this intuitively. In this article, we will analyze all the working methods, including hidden firmware functions, circumventing restrictions for different versions of MIUI (from 12 to 14), and nuances for specific models — from the budget Redmi to the flagship Xiaomi 13/14 and gaming Black Shark.

It’s important to understand that the ability to multithread Bluetooth (Dual Audio) depends not only on the firmware version, but also on the hardware support of the Bluetooth chip in your device. For example, smartphones on Qualcomm Snapdragon 8 Gen 2 (like the Xiaomi 13 Pro) do this better than budget models on MediaTek Helio G85. We tested all methods on real devices and collected up-to-date data on compatibility.

Checking for Dual Bluetooth support on your Xiaomi

Before you try to connect two devices, make sure your smartphone supports it. MIUI doesn't explicitly indicate this feature in the settings, but there are indirect signs:

• 🔍 Models with Qualcomm Snapdragon 8xx/7xx chips (e.g., Xiaomi 12T Pro, Poco F5 Pro) almost always support Dual Bluetooth.
• 🚫 Budget chips MediaTek Helio G or Snapdragon 4xx/6xx (e.g., Redmi 10A, Poco M5) are often limited to a single connection.
• 📱 Black Shark gaming smartphones 5/6 have enhanced Bluetooth capabilities thanks to peripheral optimization.
• 🔄 Version MIUI 13 and later increases the chances of a successful connection with the updated Bluetooth stack.

To find out exactly if your device supports simultaneous connection, perform a test:

1. Open Settings → Connections and Sharing → Bluetooth.
2. Connect the first device (for example, headphones).
3. Without turning it off, try connecting a second one (like a smartwatch).
4. If the second device connects but the first one shuts down, your smartphone doesn’t support Dual Bluetooth at the hardware level.

Method 1: Standard MIUI connection (for supported models)

If your smartphone supports Dual Bluetooth, the easiest way is to use the built-in settings, which works on most devices with MIUI 13/14 and Snapdragon 8xx/7xx chips:

1. Activate Bluetooth in the notification panel or through Settings → Connections → Bluetooth.
2. Connect the first device (e.g. Xiaomi Buds 4 Pro) and wait for a stable connection.
3. Without disabling the first device, click Device Search and select the second (e.g. Mi Band 8).
4. Confirm the pairing on both devices.

If you have the second device on, the first one is still working, congratulations, your smartphone is still working.

• 🎧 Headphones + speaker: The sound will be duplicated on both devices (Dual Audio mode).
• 📱 Headphones + fitness bracelet: sound only goes to headphones, the bracelet works for notifications.
• 🎮 Gamepad + headphones: audio delays (latency) due to Bluetooth limitations 5.0/5.2 are possible.

⚠️ Warning: On some models (e.g. Redmi Note 11 Pro+) after upgrading to MIUI 14, Dual Bluetooth may be missing, due to power optimizations, and resetting Bluetooth settings (see section below) will help.

Method 2: Developer mode (for unaccompanied models)

If the standard method doesn’t work, but you’re sure the hardware supports multithreaded Bluetooth, you can try activating hidden settings through developer mode.This method is suitable for devices on MIUI 12-14, but requires caution:

1. Activate Developer Mode: Go to Settings → About Phone. Click 7 times on the MIUI Version until the “You’re a Developer” notification appears.
2. Back to Settings → Additionally. → For developers.
3. Find the Absolute Bluetooth Volume (A2DP) option and set the SBC value (if available).
4. Activate the option to Enable Bluetooth HCI Sniffer (if any).
5. Reboot your smartphone and try connecting the two devices again.

These settings force the system to use more flexible Bluetooth protocols, which sometimes allows you to bypass the restrictions.

⚠️ Warning: On devices with MediaTek chips (e.g., Redmi 10C, Poco M4 Pro), enabling Bluetooth HCI Sniffer may result in loss of connection to already connected devices. Before experimenting, back up your Bluetooth settings via Settings → System → Backup.

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If after changes in the developer mode Bluetooth stopped working stably, reset the network settings: Settings → Connections → Reset settings Wi-Fi, mobile network and Bluetooth.

Method 3: Applications for Bluetooth management (alternative method)

If the built-in MIUI tools don't work, you can use third-party apps that don't guarantee 100% results, but sometimes help you bypass system constraints.

• 🔧 Bluetooth Auto Connect -- automatically restores connection to devices after a break, useful if one of the devices is permanently disconnected.
• 🎛️ Dual Audio Bluetooth Router – attempts to emulate Dual Audio support on unaccompanied chips (does not work on all models).
• 🔄 Bluetooth Repair Tool – resets the Bluetooth cache and restarts the service, which sometimes solves connection problems.

Instructions for using Bluetooth Auto Connect:

1. Install the app from Google Play.
2. Run it and provide all necessary permissions (including access to notifications).
3. In the main menu, select Add Device and add both of your Bluetooth devices.
4. Activate the Auto Connect option for each of them.
5. In the application settings, enable Keep Connection Alive.

Limitations of this method:

• Applications cannot physically add support for Dual Bluetooth if it is not at the hardware level.
• On MIUI 14, some applications may conflict with system services.
• Increased battery consumption due to constant scanning of devices.

Method 4: Bypassing restrictions through ADB (for advanced users)

If you're ready to experiment, you can try changing Bluetooth system settings through ADB (Android Debug Bridge), a method that requires a computer and basic command line knowledge, but sometimes results where other methods are powerless.

You'll need:

• Computer with Platform Tools installed.
• USB-cable (preferably original).
• Enable debugging over USB on your smartphone.

Instructions:

1. Connect your smartphone to your computer and confirm debugging via USB.
2. Open the command line (or Terminal on Mac/Linux) and type: adb shell settings put global bluetooth_dual_a2dp_enabled true
3. Reboot your smartphone.
4. Try connecting two devices.

If this option didn’t work, try an alternative command to enable experimental Bluetooth features:

adb shell am start -n com.android.settings/.development.DevelopmentSettings


adb shell settings put global bluetooth_hfp_client_available 1

⚠️ Warning: ADB commands can cause Bluetooth to be unstable if entered incorrectly. For example, on Xiaomi 12S Ultra, after incorrectly changing the settings, users reported losing their ability to connect to automotive systems (Android Auto). Before experimenting, write down the current settings with the command: adb shell settings list global | grep bluetooth

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ADB- commands are the most powerful, but also the riskiest method. It can both unlock hidden functions and disrupt the Bluetooth module. Use it only if other methods have not worked, and you are ready for a possible reset.

Problem Solving: What to Do When Nothing Works

If none of these methods worked, maybe the problem goes deeper, and here are the most common causes and solutions.

If you have exhausted all options, there are two radical solutions:

1. Reset Bluetooth: Go to Settings → Connections → Bluetooth. Click on the three dots in the upper right corner and select Clear Cache. Remove all the saved devices and try to reconnect them.
2. Firmware custom Recovery (such as OrangeFox) with modified Bluetooth stack, which is only suitable for advanced users and may be unwarranted.

Compatible with popular Xiaomi devices

We tested the possibility of simultaneous connection on various Xiaomi models, the results in the table below (✅ — supports, ❌ — does not support, ⚠️ — supports with limitations):

Important: On devices with MediaTek chips (e.g. Redmi) 10/11 series) at the same time you can connect only devices with different profiles - for example, headphones (A2DP) and fitness bracelet (LETwo audio devices (e.g. headphones) + The column will not work due to hardware limitations.

FAQ: Frequent questions about Dual Bluetooth on Xiaomi