Headphones do not connect to Xiaomi Redmi phone via Bluetooth: a complete guide to fixing the problem

The problem with connecting Bluetooth headphones to Xiaomi Redmi smartphones is one of the most common among users. You turn on the headphones, try to find them in the list of available devices, but the phone either does not see them at all, or it emits an error "Did not connect." In some cases, the connection is established, but the sound is interrupted or disappears after a few seconds, the reasons can be due to software failures of MIUI, and hardware problems of the Bluetooth module.

In this article, we’ll look at all possible scenarios, from basic checks to deep system settings, how to diagnose a problem, what MIUI parameters affect connection stability, and what to do if AirDots, Sony WH-1000XM5 or other models refuse to work with your Redmi Note 12/11/10 Pro.

If you've tried to reboot your phone and headphones before, but the results haven't changed, don't rush to carry the device for repair. In 90% of cases, you can solve the problem yourself, following our instructions. And for owners of POCO and Redmi with custom firmware, we have prepared a separate section with unique tips.

Basic diagnostics: check headphones and phone

Before digging deep into MIUI settings, make sure the problem isn't in the trivial stuff. Start by checking the physical condition of the headphones and phone.

🔹 Check the charge of the headphones: most TWS- headphones (e.g. Xiaomi AirDots or Redmi Buds) don't pair when the charge level is below 10%. Connect them to the charge case for 5-10 minutes, even if the indicator is on. Sometimes the case contacts oxidize — wipe them with an alcohol napkin.

🔹 Activate pairing mode: many headphones have a separate button to put into search mode (usually you need to hold it for 3-5 seconds until the indicator starts flashing quickly). Sony and JBL often have a combination of buttons, and AirPods have an opening of the case cover. Xiaomi Mi True Wireless Earphones require holding the touchpad on both headphones simultaneously for 10 seconds to reset.

🔹 Check the phone's Bluetooth module: go to Settings → Connections and Sharing → Bluetooth and make sure the switch is active. If it turns off on its own, it's a sign of a malfunction in MIUI or a hardware malfunction.

• 🔋 Headphones charge below 30% – many models automatically turn off Bluetooth to save power.
• 📱 Flight mode or power saving - turn them off in the notification curtain.
• 🔄 Reboot devices – turn off both the phone and headphones for 1 minute, then turn on again.
• 🎧 Connect to another device — headphones can be "tied" to another phone or PC. Remove them from other gadgets' memory.

⚠️ Warning: If the headphones were previously used with this phone but are not now connected, try removing them from the list of associated devices (Settings → Bluetooth → ⚙️ next to the headphone name → Delete).

2. reset Bluetooth settings on Xiaomi Redmi

If the basic check doesn't work, the next step is to reset the Bluetooth settings to factory settings, which will remove all the stored devices and return the module settings to the "out of the box" state, which is safe and does not affect other data on the phone.

📌 Resetting instructions:

1. Open Settings → System and device → Additional → Resetting.
2. Select Network Settings Reset (on some firmwares – Wi-Fi, mobile network, and Bluetooth Reset).
3. Confirm the action with a password or pattern lock.
4. After restarting the phone, try connecting the headphones again.

🔧 For advanced users: If the reset didn't help, try clearing the Bluetooth app cache:

1. Go to Settings → Applications → Application Management.
2. Click on the three dots in the upper right corner and select Show System Processes.
3. Find Bluetooth (or com.android.bluetooth), open it and click Clear Cache.

If the headphones are still not connected after the reset, the problem may be a conflict of Bluetooth profiles. For example, some headphones require support for an A2DP profile (for streaming music) or HFP (for calling).

3. Update MIUI and firmware Bluetooth module

Bluetooth malfunctions are often associated with an outdated version of MIUI or module firmware. Xiaomi regularly releases bug fixes, especially in new models (Redmi Note 13 Pro+, POCO X6 Pro).

📲 How to update MIUI:

1. Open Settings → About the phone → System update.
2. Click Check Updates and wait for the search to be completed.
3. If you have an update, download it and install it. Importantly, make sure you have a battery charge above 50% before upgrading.

🔄 Update of the Bluetooth module firmware:

On some Redmi models (such as the Note 10 Pro or K50), Bluetooth firmware is updated separately.

1. Download the latest firmware version for your model from the official Xiaomi website (Support → Downloads section).
2. Rename the file to bt_firmware.img and place it in the root directory of internal memory.
3. Restart the phone – the system will automatically update the module.

⚠️ Warning: If your headphones stopped working after the MIUI update, try rolling back to the previous firmware version. Download the archive with the desired version, go to Settings → About Phone → System Update → Three-pointed → Select a firmware file.

4 Developer Settings: Hidden Bluetooth Settings

There are hidden options in MIUI that can affect the stability of the Bluetooth connection, and to activate them, you need to turn on the developer mode:

🛠 How to Enable Developer Mode:

1. Go to Settings. → The phone.
2. Find the MIUI version and click on it 7 times in a row, and the notification will appear "You became a developer!".
3. Return to the main settings menu and open a new section → For developers.

🎛 Key settings for Bluetooth:

• 🔘 Disable AVRCP 1.6 – if the headphones are connected but do not control playback (pause, next track).
• 🔘 Enable A2DP Hardware Offload — improves sound quality, but may cause delays.
• 🔘 Change the Bluetooth codec – if the sound is interrupted, try switching from SBC to AAC or aptX (not available on all models).
• 🔘 Disable Bluetooth A2DP Hardware Offload — if the sound is distorted.

⚙ Additional tweaks:

If the headphones are plugged in but the sound is gone after a few minutes, try turning off the Bluetooth battery optimization:

1. Go to Settings → Applications → Application Management → Bluetooth.
2. Choose the Battery. → Optimizing the battery.
3. Set it up without limits.

5. Problems with specific headphone models

Some headphones conflict with MIUI because of the firmware or codecs they support.

🎧 Xiaomi AirDots / Redmi Buds:

These headphones often don't connect because of a pairing memory failure, so you can reset them.

1. Put both earbuds in the case.
2. Hold the button on the case for 15-20 seconds until the indicator flashes red and white.
3. Remove the headphones from the list of devices on the phone and connect again.

🍎 Apple AirPods (all generations):

They are not stable with MIUI because of the proprietary W1/H1 protocol, to improve compatibility:

• 🔹 Turn off Automatic Switching in AirPods settings (via iPhone).
• 🔹 In the developer settings on Redmi, enable Bluetooth Debugging.
• 🔹 Use only the AAC profile (turn off SBC in the codec settings).

🎵 Sony WH-1000XM4/XM5 and others with LDAC:

These headphones require support for the LDAC codec, which in MIUI often malfunctions.

• 🔹 In the headphone settings (via Sony Headphones Connect) set priority to AAC instead of LDAC.
• 🔹 Turn off Adaptive Sound Control in the Sony app.
• 🔹 Update the headphone firmware through official software.

🔊 JBL, Samsung, other brands:

If the headphones are connected but the sound is interrupted, check:

• 🔹 Is Game Mode activated in MIUI (it may conflict with Bluetooth)
• 🔹 Is dual Bluetooth enabled (simultaneous connection to two devices) – turn it off in Settings → Bluetooth → Additional.

💡

If the headphones are plugged in but only sounding in one headphone, try resetting them to factory settings. For Xiaomi AirDots, it's holding the touchpad on both headphones for 15 seconds.

6. Hardware malfunctions: when you need to service

If none of the software methods worked, the problem could be a physical breakdown of the Bluetooth module or antenna, and you can tell by the following:

• 🔹 The phone doesn't see any Bluetooth devices (headphones, speakers, fitness bracelets).
• 🔹 Bluetooth is turned on but immediately shuts down or runs with permanent cliffs.
• 🔹 A Bluetooth Error notification with a code (e.g., Error 13) appears on the screen.
• 🔹 After falling or getting moisture (even if the phone is intact).

🔧 What you can do on your own:

🔹 Check the Bluetooth antenna: on most Redmis, it's located at the top of the body (near the camera). If the phone fell, the antenna could move away from the contacts. Carefully disassemble the case (experience required!) and check the integrity of the plume.

🔹 Test with another phone: connect the headphones to another device. If they work, the problem is with your Redmi.

🔹 Diagnostics through the engineering menu:

Dial ##4636##, select Phone Information and scroll to Bluetooth. If status shows Off or Error, the module is faulty.

⚠️ Warning: If you don't have experience in electronics repair, don't try to solder or replace a Bluetooth module yourself. In Redmi Note 12 and later, it's often integrated into the motherboard, and its replacement requires specialized hardware.

💰 Cost of repair:

In official service centers Xiaomi replacement Bluetooth module costs 1,500-3,000 rubles (depending on the model). in informal workshops the price may be lower, but the risk of using non-original parts is higher.

7. Alternative ways to connect headphones

If a standard Bluetooth connection never worked, consider alternatives:

🔌 Use of Bluetooth adapter → 3.5mm jack:

For Redmi without a 3.5mm connector (like the Note 11 Pro), you can buy a USB-C → 3.5mm adapter with a built-in Bluetooth receiver. Connect the headphones through it — this bypasses the system limitations of MIUI.

📱 Applications for Bluetooth management:

• 🔹 Bluetooth Auto Connect – Automatically restores connection after break.
• 🔹 Bluetooth Repair resets the module cache and restarts the service.
• 🔹 Developer Options Shortcut – Quick access to Bluetooth codec settings.

🎧 Connection via another protocol:

Some headphones (such as Sony LinkBuds) support LE Audio (Low Energy Audio) connectivity to activate it:

1. Enable LE Audio in the Developer Settings (Enable Audio LE).
2. Make sure the headphones are updated to the latest firmware.
3. Reconnect them manually.

💡

If the headphones are connected but the sound is late (for example, in games or videos), turn on the option to turn off the absolute volume of Bluetooth in the developer settings. This synchronizes the volume on the phone and headphones.

FAQ: Frequent questions about connecting headphones to Xiaomi Redmi