How to connect two Bluetooth devices to a Xiaomi smartphone at the same time: all ways

Connecting two Bluetooth devices to a Xiaomi smartphone at the same time is a challenge that users face when trying to use, for example, wireless headphones and a fitness bracelet, or two speakers for stereo sound. Unlike the flagship models of Samsung or Apple, where the function of Dual Audio is implemented at the firmware level, the company has a unique model. MIUI It all depends on the OS version, device model and type of connected gadgets.

In this article, we will analyze all working ways to connect two Bluetooth devices to Xiaomi – from standard settings. MIUI 14 to workarounds for older models, you'll learn which combinations of gadgets are supported (e.g. headphones) + smart watches), and where you need to use splitters or advanced codec like LC3. Also consider the typical errors, because of which the smartphone “does not see” the second device, and how to fix them.

What Xiaomi devices support two Bluetooth connections at the same time

The functionality of simultaneous connection depends on the hardware platform and version. MIUI. Here are the key criteria:

• 📱 Flagship models (series Xiaomi) 12/13/14, Redmi K50/K60, POCO F4/F5): Supports dual Bluetooth at the chipset level (e.g. Snapdragon) 8 Gen 1/2 or Dimensity 9000).
• 🔄 MIUI 13 and later: Two audio devices added to firmware (not available on all devices).
• 🎧 Type of device: two pairs of headphones (e.g. Redmi Buds 4 Pro) + AirDots) or headphones + Connecting two fitness bracelets (Mi Band 7) + Amazfit GTR (4) is not normally supported.
• ⚠️ Budget models (Redmi) 10A, POCO M4): limited to one active Bluetooth connection at a time.

To check your model support, open Settings → The phone. → Version. MIUI. If there is a two audio device in the Bluetooth section, the function is available. For accurate information, see the table below.

⚠️ Attention: On devices with MIUI 12 and older function may work unstable — the sound will be interrupted or transmitted to only one device, in this case, will help reset Bluetooth settings (Settings) → Bluetooth → Additionally. → Reset).

Standard method: function "Two audio devices" in MIUI

If your Xiaomi smartphone supports simultaneous connection, use the built-in function:

1. Open Settings → Bluetooth and connect the first device (e.g. headphones).
2. Slap the icon. ⚙️ Next to the device name and select Two Audio Devices (or Dual Audio in Global Firmware).
3. Enable the second device in pairing mode and select it from the list.
4. Activate the synchronize sound option to avoid delays.

Once connected, the sound will be duplicated on both devices.

• 🔊 Works only with audio devices (headphones, speakers).
• 📶 Maximum distance between gadgets - 5 meters (otherwise the connection is broken).
• 🔋 Increased battery consumption (up to) 15-20% one hour with active reproduction).

Charge both Bluetooth gadgets to 50% or more|

Update your smartphone to the latest version MIUI|

Remove old paired devices from the list (Settings) → Bluetooth → ⚙️ → Delete)|

Enable Visible for All mode on both devices

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If the item Two audio devices are missing, try activating it through the developer settings:

1. Go to Settings. → About the phone and tap 7 times according to the version MIUI, to unlock the developer mode.
2. Back to Settings → Additionally. → For developers.
3. Find the option to Enable Dual Bluetooth (or Enable Dual Audio) and activate it.
4. Reboot your smartphone.

⚠️ Note: On some models (POCO X3 Pro, Redmi Note 11) activation of this option can lead to malfunctions in Bluetooth – the sound will disappear on the Internet. 1-2 In this case, disable the function and use alternative methods (see the next section).

Alternative methods for devices without Dual Bluetooth

If your Xiaomi does not support standard two-device connectivity, use one of the workarounds:

1.Use of Bluetooth splitter

Bluetooth splitter (e.g., Avantek) BTA-200 or 1Mii B06 Plus) allows two devices to be connected to the same source:

• 🔌 The splitter connects to the smartphone via Bluetooth.
• 🎧 Two audio devices (headphones, speakers) are connected to the splitter).
• 🔊 The sound is broadcast synchronously without delay.

Cons: additional costs (from 1,500) ₽) Plus: it works on any Xiaomi model, including budget models.

Applications for sound duplication

Some Google Play apps allow you to emulate Dual Audio software:

• 📱 SoundAssistant (from Samsung, but works on the same platform) MIUI): It allows you to direct sound to two devices.
• 🔊 Bluetooth Auto Connect: Automatically reconnects devices when communication is broken.
• 🎛️ Dual Music Player: Creates a virtual mixer for two speakers.

Instructions for SoundAssistant:

1. Install the app and give you access to Bluetooth and Notifications.
2. Connect the first device through standard settings MIUI.
3. Open SoundAssistant, go to Additional → Two dynamics.
4. Select the second device from the list.

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If the sound on the second device is late, in the application settings, reduce the audio buffer value to 100-150 miss.

3. Connection through AUX or USB-C

If one of the devices supports a wired connection (e.g., a column with a 3.5 mm connector or USB-C), Use it in parallel with Bluetooth:

• 🔌 Connect the first device via Bluetooth (earphones).
• 🎵 The second device (column) connect through AUX-cable USB-C adapter.
• 📱 In sound settings (Settings) → Sound. → Exit) select Dynamics + headphones.

This method is suitable for listening to music, but does not work for a microphone (for example, you can not simultaneously talk on a Bluetooth headset and record sound through a microphone). USB-C-microphone).

Why Xiaomi doesn’t see a second Bluetooth device: solutions to problems

If your smartphone refuses to connect the second device, check the following points:

If the problem persists, reset the network settings:

1. Go to Settings → System → Resetting settings.
2. Select Network Settings Reset (does not delete application data).
3. After restarting, connect the devices again.

⚠️ Attention: On devices with MIUI 12.5 and below, after resetting Bluetooth settings, you may need to re-authorize in some applications (e.g. Mi Fit or Zepp.

Features of connecting specific devices

Different types of Bluetooth gadgets behave differently when connected at the same time.

1. Two pairs of wireless headphones

If you want to connect, for example, Redmi Buds 4 Pro and Xiaomi Air 2S:

• ✅ It is powered by flagships (Xiaomi 13, Redmi) K60) s MIUI 14.
• ⚠️ On budget models, the sound will be asynchronous (delay up to 0.5 seconds).
• 🔋 The battery consumption of the smartphone increases by 25-30%.

Important: when connecting two headphones from Xiaomi (for example, Buds) 3T and Buds 4) can trigger Quick Switch, which will automatically switch the sound to the last connected device. To turn this off, go to Bluetooth Settings. → Additionally. → Quick switch and deactivate the option.

2 Headphones + smartwatch/fitness bracelet

Combination of Bluetooth headphones and Mi Band/Amazfit not normally maintained at the level MIUI. Decisions:

• 📱 Connect the watch to Bluetooth and headphones – through USB-C adapter.
• ⏱️ Use the watch only for notifications, and listen to music through headphones (without simultaneous connection).
• 🔄 Reconnect devices manually periodically (e.g. headphones during the day, hours at night).

3.Two Bluetooth speakers for stereo sound

To create a stereo pair of two speakers (e.g. Mi Portable Speaker):

• 🔊 Use Bluetooth 5.0+ (Xiaomi 12T Pro or Redmi K50 Ultra).
• 🎛️ Enable Stereo mode in the column settings (if supported).
• 📱 V MIUI Select Two Audio Devices → Synchronize the sound.

If speakers aren’t synced, try the AmpMe app, which allows you to combine multiple devices into a single sound system.

How to check connection quality and sound synchronization

Once you've connected the two devices, it's important to make sure that the sound is transmitted without delay or interference.

1. Synchronization test: Turn on the smartphone Metronom (app or online service). Compare the sound on both devices — if the beats match, synchronization is normal. Latency of more than 200 ms will be noticeable when watching the video.
2. Checking the stability of communication: Move away from the smartphone 5-10 If the sound starts to break, reduce the distance or move to another room.

Measurement of delay:

• Use the Bluetooth Latency Test app (available on Google Play).
• Normal value for Bluetooth 5.0 — 100-150 miss.

If the delay is critical (for example, for gaming or watching movies), try:

• 🔧 In Bluetooth settings, select Sound Quality Priority (sacrificing stability).
• 🎧 Use headphones with low-latency aptX support or LC3 (For example, Redmi Buds 4 Pro).
• 📱 Turn off Wi-Fi and mobile data during the test – they can cause interference.

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For minimal sound delay, use a codec. LC3 (Available on Xiaomi 13S MIUI 14) or aptX Adaptive (requires compatible headphones).

Energy consumption and how to reduce battery consumption

Using two Bluetooth devices at the same time increases the load on the processor and wireless module, which leads to increased battery consumption.

• 📱 Xiaomi 13 Pro: Expense ~20% per hour when playing music on two speakers.
• 📱 Redmi Note 11 Pro+: expense ~25-30% In an hour (due to a less optimized chipset).
• 🎧 Redmi Buds headphones 4 Pro discharged on 15-20% faster with duplicated sound.

Ways to reduce costs:

• 🔋 Enable Power Saving Mode (Settings) → Battery, but note that this can impair the quality of communication.
• 📶 Turn off Wi-Fi and mobile data if you don’t need it.
• 🔊 Reduce the bitrate of sound: in Bluetooth settings, select Balanced instead of High Quality.
• 🔄 Use one device for music and the other for notifications only (e.g. Mi Band).

If the battery is draining too quickly, check the background processes:

1. Go to Settings → Battery → Battery Use.
2. Find apps that consume >10% charge (e.g. Mi Fit or Spotify).
3. Limit their activity in the background or turn off autostart.

FAQ: Frequent questions about dual Bluetooth on Xiaomi