How to connect two headphones to the Xiaomi smartphone at the same time: all working ways

Can I connect two headphones to Xiaomi and why it is necessary?

Synchronously connecting two pairs of wireless headphones to one Xiaomi smartphone is a task that users face when listening to music together, watching movies or while playing online. Despite the fact that the Dual Audio feature is officially supported by not all models, there are workarounds even for budget devices on MIUI.

Main use cases:

• 🎧 Shared viewing: When two people want to watch a movie on the same phone without interference.
• 🎮 Gaming sessions – to synchronize sound between players in mobile games.
• 🔊 Sound amplification – connecting two headphones to the same source to create a stereo effect (for example, Xiaomi Buds 4 Pro) + Redmi AirDots 3).

It’s important to understand that starting with MIUI 14 and Bluetooth 5.2, some Xiaomi models (e.g. Xiaomi 13/14, Redmi Note 12 Pro+) officially support Dual Audio, but older versions of firmware or budget devices have to activate this feature manually.

Method 1: Enabling Dual Audio in MIUI settings (official method)

If your Xiaomi smartphone runs MIUI 14/15 or later and is equipped with a Bluetooth 5.2+ chip, try activating the built-in Dual Audio feature. It is available on flagships (Xiaomi 12/13/14, POCO F5) and some mid-range devices.

Step-by-step:

1. Open Settings → Connections and Sharing → Bluetooth.
2. Connect the first pair of headphones (e.g. Xiaomi Buds 4).
3. Click on the gear icon next to the connected device.
4. Select Dual Audio or Connect the second device.
5. Activate the search and connect the second pair of headphones.

☑️ Checking for Dual Audio support

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⚠️ Note: Some firmware may not have Dual Audio, even if it has hardware support. MIUI Up to the latest version or use alternative methods from the following sections.

Method 2: Use the Sound Sharing function

Some Xiaomi models (such as the Xiaomi 13 Ultra or Mix Fold 3) support Sound Sharing technology, which allows you to stream audio to two devices at once, a feature that is more common on flagships with a Snapdragon 8 Gen 2/3 chip.

How to turn on:

• 🔗 Connect the first pair of headphones via Bluetooth.
• 🔍 Go to Settings. → Sound. → Sound sharing.
• 🔄 Activate the slider and connect the second pair of headphones.
• ⚙️ If necessary, adjust the volume balance between devices.

⚠️ Note: If you don't have Shared Sound in your settings, it means your model doesn't support the software-level function.

Method 3: Apps for sound duplication (if Dual Audio is not available)

If the built-in features are not available, you can use third-party applications.

• 📱 SoundAssistant (from Samsung, but runs on Xiaomi) – allows you to direct sound to two Bluetooth devices.
• 🔊 Bose Connect – if one of the pairs of headphones from Bose, the application supports synchronization with other devices.
• 🎛️ Bluetooth Dual Audio (from Google Play) is a universal solution, but can require root rights on older versions of Android.

Instructions for SoundAssistant:

1. Download the app from Google Play.
2. Connect both pairs of headphones to the phone.
3. Open SoundAssistant and select Double Audio.
4. Select both devices from the list.

💡

Before using third-party apps, disable battery optimization for them in Settings → Apps → Permissions → Battery Optimization. This will prevent connection breakdowns.

⚠️ Note: Apps can make latency (latency) up to 200-300 ms. For watching movies, this is critical – synchronize the sound manually in the player (for example, in the video game). VLC or MX Player).

Method 4: Using a Bluetooth transmitter (for older Xiaomi models)

If your Xiaomi Released smartphone is up to 2020 (like the Redmi Note 8 Pro or Mi 9T), chances are it doesn’t support Dual Audio either at the hardware or software level, in which case an external Bluetooth transmitter with dual connectivity will help.

Equipment required:

• 📶 Bluetooth transmitter (e.g., Bluetooth transmitter, 1Mii B06 Plus or Avantree Oasis Plus).
• 🔌 adapter OTG (if the transmitter is connected to USB-C).
• 🎧 Two pairs of headphones with support A2DP.

How to connect:

1. Connect the Bluetooth transmitter to the smartphone via a 3.5 mm audio jack or USB-C (s OTG-adapter).
2. Activate the Dual Link mode on the transmitter (see the device instruction).
3. Connect both pairs of headphones to the transmitter.
4. On your smartphone, select the output of sound through the transmitter (Settings → Sound → Sound output).

⚠️ Note: When using a transmitter through 3.5 mm, the sound will be analog, which can degrade the quality (USB-C lightning).

Method 5: Manually enable Dual Audio via ADB (for advanced users)

If your Xiaomi smartphone hardware supports Dual Audio, but the function is hidden in the firmware, it can be activated via the device. ADB-This method works on devices with MIUI 12–14 and requires an unlocked bootloader or developer rights.

Step-by-step:

1. Activate Developer Mode: Go to Settings → About Phone and click on MIUI Version 7 times.
2. Enable USB debugging in Settings → Additional → For developers.
3. Connect your phone to your PC and execute the command: adb shell settings put global bluetooth_dual_audio_enabled 1
4. Reboot your smartphone.

After you execute the command, the Dual Audio option should appear in the Bluetooth settings. If it is not, try additional commands:

adb shell settings put global bluetooth_a2dp_offload_enabled 1


adb shell settings put global bluetooth_hfp_client_available 1

💡

ADB-This method does not work on all devices and can cause Bluetooth crashes. Before executing commands, back up your settings through Settings. → Additionally. → Backup.

Frequent problems and their solutions

When you connect two headphones to Xiaomi, users encounter common mistakes, and let's look at the most common ones and how to fix them.

Problem 1: The sound is only going to one device

• 🔄 Reconnect both devices.
• 📱 Check the volume balance in the Dual Audio settings.
• 🔧 Reset Bluetooth Settings: Settings → Connections → Bluetooth → ⋮ → Reset the settings.

Problem 2: The sound is interrupted or lagged

• 📶 Make sure the headphones are within a radius of 1-2 meters from the phone.
• 🔋 Charge headphones to 100% (low charge may cause delays).
• 📵 Disable other Bluetooth devices (fitness bracelets, smart watches).

Problem 3: Dual Audio is missing after MIUI update

• 🔄 Try to roll back to the previous firmware version through Settings → The phone. → Updating the system → ⋮ → Select a Service Package.
• 📧 Write in support of Xiaomi via the Mi Community app with the phone model and version MIUI.

FAQ: Answers to popular questions