How to turn on two headphones at once on Xiaomi: all ways for MIUI 12-14

Do you want to share music with a friend, but you only have one Xiaomi smartphone? Or do you want to create a stereo effect with two wireless headphones? Unfortunately, the standard Dual Audio feature (simultaneous play on two devices) in MIUI is disabled by default - but it can be activated! In this article, we will discuss 5 proven ways to connect two headphones to Xiaomi at the same time, including hidden settings, workarounds for older models and even options for wired headsets.

It’s important to understand that the capabilities depend on the version of MIUI, smartphone model and headphone type. For example, Xiaomi’s flagship 13/14 with Bluetooth 5.3 supports Low Latency Dual Audio out of the box, and the budget Redmi Note 10 will require additional manipulation. We have tested all methods on devices from Redmi 9A to Xiaomi Mix Fold 3 — and are ready to share the results.

Warn in advance: some methods require unlocking the bootloader or root rights. If you are a beginner, start with safe methods (sections 2 and 3), and experienced users will find advanced techniques in the article (section 5).

1. Enable Dual Audio through hidden MIUI settings (no root)

The easiest way to activate the hidden Dual Audio feature is through the engineering menu, which works on most devices with MIUI 12-14 (including the Poco X3 Pro, Redmi Note 11, Xiaomi 12T). You don't need superuser rights, but you need to follow the instructions strictly.

Open the phone application and enter the combination:

##5828463##

After that:

1. In the menu that appears, select Audio → Bluetooth Audio.
2. Find the Dual Audio Mode setting and set the Enabled value.
3. Reboot your smartphone.

Now, in Bluetooth settings, next to the connected headphones, there will be an icon + – click on it to add a second device. Note: both headphones must support A2DP and AVRCP profiles (most modern models can do this).

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If #5828463## doesn’t work, try #3644633##, which is an alternative code for newer versions of MIUI.

2.Using the "General access to sound" function (MIUI 13+)

Since MIUI 13, Xiaomi has added an official audio sharing feature, but has hidden it deep in the settings, which works on Xiaomi 12/13, Poco F4, Redmi K50 and later, and the main advantage is that you don’t need to enter engineering codes.

Instructions:

1. Connect the first headphones via Bluetooth.
2. Open Settings → Connections and Sharing → Bluetooth.
3. Slap the icon. ⚙️ near the connected headphones.
4. Select Shared Sound Access → Add the device.
5. Put the second headphones on.

Limitations of the method:

• 🔴 It only works with headphones. Xiaomi/Redmi (For example, AirDots. 3, Buds 4 Pro).
• 🔴 Possible sound delay up to 200 ms.
• 🔴 No other brand headphones are supported (Sony, JBL, Apple).

3. applications for sound duplication (without root)

If your smartphone doesn't support Dual Audio at the system level, you can use third-party apps. We tested 5 popular solutions, with the best results being SoundAssistant and Bluetooth Dual Audio.

Top.-3 simultaneous-connection:

Instructions for SoundAssistant:

1. Install the app from Google Play.
2. Open the settings → Additional → Dual Audio
3. Turn on the Enable Dual Audio switch.
4. Connect both headphones via Bluetooth.
5. In the app, select both devices to play.

⚠️ Note: Applications may conflict with system services MIUI. If the sound starts to interrupt, turn off battery optimization for the application in Settings → Annexes → Permits → Auto-start.

4. Connection via Bluetooth-split (universal method)

If the software methods don’t work, you can use a hardware solution called a Bluetooth splitter (such as the Avantek BTA-200 or 1Mii B06 Plus), which connects to the smartphone like a regular headphone, and then relays the signal to two pairs of headphones at the same time.

Pros of the method:

• ✅ It works on all smartphones, including the old Redmi. 4X or Mi A1.
• ✅ Supports headphones of different brands.
• ✅ Minimum sound delay (50–80 ms).

Cons:

• 🔴 Additional costs (from 1,500) ₽ splitter).
• 🔴 You need to carry another device with you.

How to set up:

1. Turn on Bluetooth on your smartphone and splitter.
2. Connect the splitter to the phone (like regular headphones).
3. Activate the steaming mode on the splitter (usually a long press of the power button).
4. Connect both earphones to the splitter.

5. Advanced methods (with root and ADB)

For experienced users willing to risk the stability of the system, there are two powerful ways to do this:

Method 1: Editing a build.prop file (requires root)

Open /system/build.prop file in any root file manager (such as Root Explorer) and add the following lines:

persist.bluetooth.tws.enable=true


persist.bluetooth.dualaudio.enable=true

Once saved, restart the device. This method makes the MIUI system "think" that your smartphone supports True Wireless Stereo (TWS).

Method 2: ADB-Teams (without root, but with debugging) USB)

Connect your smartphone to your PC, enable USB Debugging and execute in ADB:

adb shell settings put global bluetooth_dual_audio_enabled 1


adb shell settings put global bluetooth_tws_enabled 1

These commands mimic the inclusion of Dual Audio at the Android level, but can reset after the MIUI update.

⚠️ Note: Changes to system files or ADB-commands can lead to loss of warranty or unstable Bluetooth operation.Before experimenting, back up through Settings → Additionally. → Backup.

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Root and ADB methods offer maximum stability, but are only suitable for advanced users, and beginners are encouraged to use applications or Bluetooth splitters.

6.Alternative solutions: from Y-spunter to Wi-Fi headphones

If none of the above methods worked, consider the alternatives:

For wired headphones:

• 🎧 Use a 3.5 mm Y-splitter (for example, UGREEN 30338) Connect it to a smartphone, and then two pairs of headphones to a splitter. Minus: not all Xiaomi retain a 3.5mm connector (in Xiaomi). 11T And no newer).
• 🎧 USB-C splitter (e.g., Baseus) HM09) for devices without 3.5 mm.

For wireless headphones:

• 📶 Headphones with Wi-Fi Direct support (such as Bose QuietComfort Ultra) can connect to a smartphone as a secondary audio device.
• 📱 Some apps (such as Rave or AmpMe) sync sound between two smartphones over Wi-Fi.

For gamers:

• 🎮 Use a Bluetooth transmitter for Nintendo Switch (for example, 8BitDo WB02), It's a device that can connect two headphones at the same time, and some models are compatible with smartphones.

Comparison of methods: which one to choose?

To make it easier for you to determine, we have compiled a comparative table:

For most users, the best solution would be a combination of hidden MIUI settings + the SoundAssistant app. If you need minimal latency (for example, for gaming), consider buying a Bluetooth splitter.

FAQ: Frequent questions