Connecting wireless headphones to Xiaomi Mi9T via Bluetooth: full instructions with nuances

Xiaomi Mi9T — One of the most popular smartphones of the brand, which is still actively used thanks to the powerful “iron” and support for current versions. MIUI. However, even experienced users sometimes have difficulties connecting wireless headphones over Bluetooth. In this article, we will discuss not only the basic pairing procedure, but also the nuances of audio tuning, solving typical errors and optimizing the connection for stable operation.

Feature Mi9T — It's a built-in Bluetooth 5.0 chip that delivers high data rates and low power consumption, but to take advantage of the technology, you need to set up the connection correctly (TWS, on-ear, over-ear, and recommendations for eliminating common problems – from the “invisibility” of the device to intermittent sound.

If you just purchased a new headphone or encountered an error when connecting - this article will help you understand all the details. Mi9T On custom firmware, we prepared a separate section with the features of the setting.

1. Preparation of the smartphone and headphones for pairing

Before you start connecting, make sure both devices are ready to go. - Xiaomi Mi9T means:

• 📱 Updated software: check the relevance of the version MIUI In Settings → The phone. → System update: Outdated firmware can cause conflicts with new headphone models.
• 🔋 Battery charge: the charge level of the smartphone should be at least 20%, and the headphones are fully charged (especially important for the battery). TWS-model).
• 📡 Free Bluetooth Module: Disable all previously connected devices in Settings → Bluetooth to avoid conflicts.
• 🔍 Detection mode: activate it on headphones (usually by holding the power button or a special key until the indicator flashes).

For headphones of different brands, the process of activating the pairing mode may be different.

• 🎧 Xiaomi AirDots: Hold the touchpad on both headphones for 5 seconds until the white light flashes twice.
• 🎧 Sony WH-1000XM4: Press the power button for 7 seconds before the beep and blue blink.
• 🎧 JBL Tune 510BT: Hold the Bluetooth button until the blue glow is constant.

⚠️ Warning: If the headphones have already been paired with another device, reset their settings first (usually by holding the power button for 10-15 seconds before changing the color of the indicator). Mi9T They may not be found in the list of available devices.

2. Step-by-step instruction for connecting via Bluetooth

Now, let's move directly to the pairing process. Follow the instructions carefully, because the order of action is important for successful connectivity.

1. Open Settings on Xiaomi Mi9T and select the Bluetooth partition.
2. Activate the Bluetooth switch (if it's turned off). The smartphone will start scanning the available devices.
3. In the list, find the name of your headphones (for example, Mi True Wireless Earphones or WH-1000XM4) and tap it.
4. Confirm pairing on both devices: The smartphone will request a connection – press OK or Connect. Some headphones (such as Bose QuietComfort) may require additional confirmation on the device itself (press a button).

Wait for the inscription Connected under the name of headphones in the list of devices.

If the process is successful, the headphone indicator will stop flashing or change color (for example, from blue to permanent white), and you can now test the sound by playing music or video.

⚠️ Attention: Mi9T custom firmware (e.g. LineageOS or Pixel Experience) may not support some codecs (e.g., aptX or LDAC). In this case, the sound will be transmitted through the standard SBC, what will affect the quality.

3. Customization of sound parameters for optimal quality

After successful connection, it is recommended to adjust the sound parameters to improve the quality of playback. MIUI There are several key options for this:

1. Selecting a Bluetooth codec: Go to Settings → Put a gear icon next to the name of your headphones, select the audio codec and set the most supported one (e.g., aptX). HD or AAC for AirPods).

Nana Mi9T The following codecs are available (in descending order of quality): LDAC (up to 990 kbit/s), aptX HD (576 kbps), AAC (256 kbps), SBC (328 kbps).

Equalizer setting:

• Open Settings → Sound and vibration → Equator.
• Choose a preset (like Bass or Jazz) or create your own profile.

Xiaomi. Mi9T s MIUI 12.5+ You automatically select the best codec, but sometimes the system gets it wrong. If the sound gets interrupted or distorted, manually set it. SBC stability.

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If the sound is played only in one headphone after connection (for the purpose of the TWS-Remove both earbuds from the case and re-initialize pairing. Often the problem is solved by resetting the headphone settings.

4. Common mistakes and their solutions

Even with the right connection, users Mi9T You might have typical problems, and let's look at the most common ones and how to fix them.

🔴 Headphones are not found in the Bluetooth list

• ✅ Restart both devices (smartphone and headphones).
• ✅ Make sure the headphones are in pairing mode (the indicator flashes blue/white).
• ✅ Check if the headphones are connected to another device (for example, a laptop or tablet).
• ✅ Update the firmware of the headphones (if possible through a proprietary app, for example, Sony Headphones Connect).

🔴 The sound is interrupted or distorted

• ✅ Reduce the distance between your smartphone and headphones (maximum 10 meters without obstacles).
• ✅ Disable other Bluetooth devices (fitness bracelets, smart watches).
• ✅ Switch to codec. SBC Bluetooth.
• ✅ Check if the sound is blocking the smartphone case (especially with metal elements).

🔴 The microphone is not working during calls.

• ✅ In Bluetooth settings, select Hands-Free profile (HFP) instead A2DP.
• ✅ Check if your headphones support Hands-Free (e.g., Xiaomi AirDots Pro doesn’t have it).
• ✅ Reconnect the headphones, pre-reset their settings.

5. Optimization of connection for stable operation

To avoid connection issues in the future, follow these guidelines:

• 🔄 Update regularly: Xiaomi releases patches to fix Bluetooth errors. Check for updates to Settings → The phone. → Updating the system.
• 📵 Avoid interference: Keep your smartphone away from microwave ovens, Wi-Fi routers, and other electromagnetic wave sources.
• 🔋 Watch out for charge: discharged headphones can automatically turn off to save energy.
• 🔄 Reset Bluetooth settings when crashes frequently: Settings → Bluetooth → Three dots (menu) → Reset the settings.

For owners. Mi9T On custom firmware (such as Havoc-OS or ArrowOS) additional customization may be required:

• Install the Bluetooth Library Patcher module via Magisk to support proprietary codecs.
• In the developer settings (Settings) → The phone. → Version. MIUI (tap 7 times) → For developers, activate the Bluetooth debugging option.

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For maximum connection stability, disable Adaptive Bluetooth in the developer settings. It can cause automatic codec switching, leading to audio interruptions.

6. Features of connecting headphones of different brands

The pairing process may vary depending on the headphone manufacturer. Let's look at the nuances for popular models.

🎧 Xiaomi AirDots (all generations)

• To reset settings, hold the touch panels on both headphones for 20 seconds until the red flash.
• V MIUI Automatically set the profile AAC, But stability is better for you. SBC.
• To activate the game mode (low latency), use the Mi Earphones app.

🎧 Apple AirPods (all models)

• Nana Mi9T AirPods will be working in the mode AAC, without automatic switching between devices.
• To check the charge level, install the AirBattery app from Google Play.
• Hey Siri will not work, only basic commands via double-touch.

🎧 Sony WH-1000XM4 / WF-1000XM4

• For full-time work ANC Install the Sony Headphones Connect app.
• Nana Mi9T codec-supported LDAC, You may need to manually switch in Bluetooth settings.
• When connecting through LDAC The sound delay increases to 200-300 ms (critical for gaming).

🎧 JBL / Sennheiser / Bose

• For models with aptX support (e.g, JBL Live 660NC) on Mi9T You may need to turn off Bluetooth energy saving mode.
• Bose QuietComfort headphones require confirmation of connection on the device itself (Bluetooth button).
• Sennheiser Momentum has a branded equalizer available in the Sennheiser Smart Control app.

7. Alternative ways to connect (if Bluetooth does not work)

If Bluetooth is on Mi9T Refusing to work or headphones do not support this protocol, consider alternatives:

• 🎵 Bluetooth 5.0 adapter: connects to the connector USB-C It emulates the built-in module, and it's suitable for headphones with aptX Low Latency.
• 🎵 Bluetooth transmitter for audio systems: for example, 1Mii B06 Pro (supports) LDAC aptX HD).
• 🎵 Wired connection through USB-C: Some headphones (such as Sony) WH-1000XM4) Supports digital audio cable connection.

Adapters and transmitters require:

1. Connect the device to USB-C port Mi9T.
2. Put the headphones in pairing mode.
3. Select an adapter from the list of Bluetooth devices (usually displayed as AVRCP model).

⚠️ Attention: When in use USB-C Disable the built-in Bluetooth in your smartphone settings to avoid conflicts. Also note that adapters consume additional energy, which will affect battery life.

FAQ: Frequent questions about connecting headphones to Xiaomi Mi9T

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In the developer mode, you can also forcibly disable A2DP (to test Hands-Free or change the priority of codecs.