How Bluetooth works on Xiaomi TVs: from connectivity to troubleshooting

Xiaomi TVs have long since ceased to be just a screen for watching movies, they have become full-fledged multimedia centers that can interact with dozens of gadgets wirelessly. Among them, Bluetooth occupies a special place: it connects headphones, game controllers, keyboards and even smart lamps. But how exactly does this module work in Xiaomi TV? Why is the connection stable on some models and on others constantly breaks? And can you improve the quality of communication without buying a new TV?

In this article, we’ll break down the architecture of Bluetooth modules in Xiaomi TVs (from budget Mi TV 4A to flagship QLED Master Series), explain how to connect devices correctly to avoid typical bugs, and reveal hidden firmware settings that the manufacturer does not advertise, and learn which versions of Bluetooth are supported by different models and how this affects compatibility with gadgets from AirPods to DualShock 5.

Bluetooth architecture in Xiaomi TVs: hardware and software

Unlike smartphones, where the Bluetooth module is often integrated into the main chipset (such as Snapdragon or Mediatek), Xiaomi TVs use a separate radio module connected to the motherboard via the UART or PCIE interface.

• 🔌 Energy efficiency: A single module consumes less power in standby mode, which is critical for TVs operating around the clock.
• 📡 Improved signal: Physical separation of Bluetooth antenna and Wi-Fi reduces interference (in smartphones, they often conflict).
• 🔄 Easy to update: the module firmware is updated regardless of the main TV software, which speeds up bug fixes.

Budget models (e.g. Mi TV 4S 32) use a module based on the Realtek RTL8761B chip that supports Bluetooth 4.2. Flagships (e.g. Xiaomi TV Q2 75) have a Qualcomm QCA6174A with Bluetooth 5.0 support and Dual Mode technology (simultaneous operation with classic and low-energy devices).

It’s important to understand that the Bluetooth version in your TV doesn’t always match the version in your connected device. For example, if you’re trying to pair the Mi TV 4A (Bluetooth 4.2) with Sony’s WH-1000XM5 (Bluetooth 5.2) headphones, the connection will be set up on 4.2, limiting range and sound quality, a point that’s often overlooked, blaming Xiaomi for “bad Bluetooth,” even though the problem is that standards are incompatible.

How to turn on and configure Bluetooth on Xiaomi TV: step-by-step instructions

In most Xiaomi models, the Bluetooth module is activated by default, but sometimes it has to be turned on manually - especially after a setting reset or firmware update. Here is a universal algorithm for all versions of MIUI TV (from 1.0 to 3.0):

1. Open Settings (cog in the upper right corner of the main screen).
2. Go to Devices and Accessories → Bluetooth.
3. Activate the Bluetooth slider (if it is gray, the module is disabled).
4. Click Device Search and select the gadget from the list.
5. Confirm pairing on both devices (sometimes required to enter) PIN-code, such as 0000 or 1234).

On models with a remote control without a microphone (for example, Mi TV 4A 32), the path may differ:

Settings → Network settings → Additional → Bluetooth

If the TV does not find the device, check:

Make sure that the gadget is in pairing mode (on headphones hold the power button 5-7 seconds)

Disable other Bluetooth devices nearby (they may interfere)

Reboot the TV (Power button for 10 seconds)

Update the TV firmware to the latest version-->

Hidden setting: Some firmware has an undocumented Bluetooth Low Latency mode that reduces the audio latency to 40-60 ms (useful for gaming) to activate it:

1. Press the Menu + Volume Down remote for 5 seconds.
2. From the engineering menu, select Advanced Settings → Audio → Bluetooth Latency Mode.
3. Set the Game Mode value.

⚠️ Warning: After activation of Game Mode, the sound quality in music may deteriorate due to compression of the audio stream.

Typical Bluetooth problems on Xiaomi TV and their solutions

Even in top Xiaomi models, users are experiencing Bluetooth bugs, and here are the most common symptoms and proven ways to address them:

1.The TV doesn't see the device

Reasons:

• 🔋 Discharged battery of the gadget (Bluetooth shuts down at a charge level below 5%).
• 📵 The device is already paired with another device (for example, a smartphone).
• 🔄 The TV has power saving mode turned on, turning off radio modules.

Decision:

1. Reboot both devices.
2. On the TV, reset Bluetooth settings: Settings → Devices → Reset Bluetooth connections.
3. If the problem persists, update the module firmware through Settings → About TV → Software Update.

2. Permanent communication breakdowns

This is the most common complaint of Xiaomi TV owners.

• 📶 Interference from Wi-Fi router (if it operates at 2.4 GHz frequency).
• 🔌 Faulty. USB-port (in some models, the Bluetooth module is powered by USB-hub).
• 📦 Outdated firmware with driver bug (relevant to Mi) TV 4S 2019).

Decision:

💡

If the breaks occur while watching video, try to turn off Wi-Fi Direct in the network settings – this protocol conflicts with Bluetooth at 2.4 GHz.

3. It is impossible to connect a gamepad (DualShock, Xbox Controller)

The problem is typical for TVs on Android TV 9.0 and below.

1. Install the Sixaxis Controller app from Google Play.
2. Connect the gamepad over USB, then pair through the application.
3. In the Bluetooth TV settings, select Compatibility Mode.

⚠️ Attention: Mi TV Stick and Mi Box S gamepads are connected only through USB-To do this, activate Developer Mode (7 times click on the Software Version in the settings) and enable Debugging by USB.

Xiaomi’s Bluetooth Comparison: Which is Best for Games and Music?

If you are choosing a Xiaomi TV and plan to use Bluetooth actively, look at the module version and supported audio codecs. We tested 5 popular models for communication stability and sound quality:

For music, the best models with support for aptX or LDAC (for example, Xiaomi TV Master, as these codecs transmit sound in high resolution (up to 990 kbps). for games, the minimum delay is more important - Xiaomi leads the way. TV Q1 Low-Latency.

If you need multithreaded audio (for example, to connect two pairs of headphones at the same time), look for models with Bluetooth 5.2 and support. LE Audio, so far, only Xiaomi has this feature. TV A Pro (2023).

💡

For stable Bluetooth on Xiaomi TV, it is critical to update the firmware. In versions of MIUI TV below 2.1.4, there was a bug with a communication interruption for prolonged use (more than 2 hours).

How to improve the quality of Bluetooth connection: advanced tips

If standard methods don’t help, try these unobvious tricks:

• 📶 Change Wi-Fi channel: In router settings, set a fixed channel 1, 6 or 11 (they least intersect with Bluetooth).
• 🔌 Use it. USB-Powered hub: if the Bluetooth module is powered by USB-port, connect the hub with an external power supply - this stabilizes the signal.
• 🔄 Turn off energy saving: in Settings → Energy Saving Select Performance Mode.
• 🎧 Forced to select the codec: in the engineering menu (Menu) + Volume Down) Find Bluetooth Audio Codec and install aptX LL play-off LDAC music.

For owners of Mi TV 4S and Mi TV 4A with permanent cliffs, there is a radical solution - replacing the Bluetooth module.The cost of the original Realtek RTL8761B module is about 800-1200 rubles, and the replacement takes 15 minutes.

If you're not ready to take the TV apart, try an external Bluetooth adapter. Any adapter on a chip will do. CSR8510 qualcomm QCA61x4 (For example, TP-Link UB500). He's plugging in to USB-port of the TV, and in the sound settings is selected as the main audio device.

Firmware Bluetooth module via ADB: for experienced users

In rare cases (for example, after a failed update), the Bluetooth module crashes: it does not find the device, it emits a “Bluetooth share failed” error, or it constantly restarts, this is treated by flashing through ADB.

You'll need:

• 🖥️ Computer with installed ADB Tools and Xiaomi drivers.
• 📁 Firmware for your module (download at xiaomifirmware.com).
• 🔌 USB-cable.

Instructions:

1. Activate Developer Mode on your TV (7 times click on Software Version in settings).
2. Enable USB Debugging and Network Debugging.
3. Connect TV to PC and execute commands: Adb devices adb shell su dd if=/sdcard/bluetooth_fw.bin of=/dev/block/by-name/bt_fw
4. Restart the TV: reboot.

⚠️ Attention: improper firmware can cause the module to fail. Before the procedure, check the model of the module with the adb shell dmesg command. | grep Bluetooth. If there is a line in the output RTL8761B, Use the firmware only for this chip.

After successful firmware, reset your Bluetooth settings:

adb shell am broadcast -a android.bluetooth.adapter.action.REQUEST_DISCOVERABLE

FAQ: Frequent questions about Bluetooth on Xiaomi TV