Why Xiaomi Headphones Don't Connect to Your Phone over Bluetooth: A Complete Troubleshooting Guide

Did you take Xiaomi's new wireless headphones out of the box, turn them on, and your Android phone stubbornly refuses to see them? Or does the connection constantly break down after a few seconds? This problem is familiar to many users — according to service center statistics, about 30% of the calls on Xiaomi gadgets are due to unstable Bluetooth work, the reasons can be hidden in software failures and hardware malfunctions.

In this article, we will discuss 12 of the most common reasons why Xiaomi headphones (including Redmi AirDots, Mi True Wireless, Buds 3/4 Pro and others) do not connect to the phone, as well as give step-by-step instructions for diagnosis and repair. Particular attention will be paid to the hidden MIUI settings, which are often ignored even by experienced users. If you have tried all the standard methods, do not rush to carry the device into the service: in 80% of cases, you can solve the problem yourself in 5-10 minutes.

1. Checking the basic connection conditions

Before digging deep into the settings, make sure that the basic requirements for pairing devices are met. Often users miss the obvious, spending hours looking for non-existent faults.

• 🔋 Headphone and case charge: Make sure the headphones are charged (the indicator on the case should burn or blink). Many Xiaomi models (e.g. Redmi Buds 3 Lite) do not turn on at a charge level below 10%.
• 📱 Bluetooth version on your phone: Check if your smartphone supports Bluetooth 5.0+ (For AirDots 3 Pro and newer models, you can find out the version in the Settings menu. → The phone. → Full specification.
• 🔄 Pair mode: Most Xiaomi headphones only activate the search mode when you first turn on or after reset. To start it again, hold the button on the case / headphones for 5-10 seconds until the indicator flashes.

If the headphones have previously been connected to this phone, but are not now determined, try to remove them from the list of associated devices:

1. Open Settings → Bluetooth.
2. Find your headphones in the list and tap on the icon ⚙️ (or hold the name).
3. Select Forget the device (or Remove it).
4. Restart your phone and try to connect again.

⚠️ Note: Xiaomi Mi True Wireless 2 headphones and some other models automatically connect to the latest device when removed from the case.If they were previously paired with another phone or PC, they may ignore your current smartphone.

2. Software glitches: resetting Bluetooth settings and cache

The MIUI operating system (especially in versions 12-14) is known for its phantom bugs in the Bluetooth module, often solved by simply resetting settings or cleaning the cache of system applications.

Method 1: Reset Bluetooth settings

This procedure will remove all stored devices and return the connection parameters to the factory:

1. Go to Settings → Connections and Sharing → Bluetooth.
2. Put three points on it (⋮) in the upper right corner and select Reset Bluetooth settings.
3. Confirm the action and restart the phone.

Method 2: Cleaning the cache of system applications

If the reset didn’t help, try clearing the cache of two key services:

• com.android.bluetooth is the main Bluetooth module.
• com.miui.bluetooth is an add-on from Xiaomi (not available on all firmware).

Instructions:

1. Open Settings → Applications → Application Management.
2. Put three points on it (⋮) → Show system-based.
3. Find the apps by the names above, open them and select Clear cache (not data!).
4. Reboot the phone.

If the headphones are still not connected after this manipulation, the problem may be a firmware conflict, for example, some Xiaomi models (such as the Redmi Note 10 Pro) had a bug in MIUI 12.5, which caused Bluetooth 5.2 to malfunction, in which case only an update will help.

3. Update of the firmware of headphones and phone

Manufacturers regularly release updates for wireless headphones that fix connection errors, but many users do not even suspect that their Xiaomi AirDots can be updated!

How to update the firmware of Xiaomi headphones

For most models (Mi True Wireless 2, Buds 3 Pro and later), the update is via the Mi Earphones app (formerly Xiaomi Earphones):

1. Download the app from Google Play.
2. Connect your headphones to your phone (even if the connection is unstable).
3. Open the application and go to the Firmware Update section.
4. If a new version is available, follow the instructions on the screen.

Important: During the upgrade, don't remove the headphones from the case or turn off Bluetooth. the process can take up to 10 minutes.

Update of phone firmware

The outdated version of MIUI may conflict with new headphones to update the system:

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download and install it.

⚠️ Note: If after updating the firmware headphones stopped working at all (for example, do not turn on or not determined), reset to factory settings. To do this, hold the button on the case for 15-20 seconds until the color change of the indicator (usually from red to white).

4. Conflicts with other devices and applications

Bluetooth on Android can be unstable due to competition for resources, for example, if you are connected to a smart watch, fitness bracelet or speaker, the headphones may not receive enough attention from the module.

How to check conflicts:

• 📱 Turn off all unnecessary devices in the Bluetooth menu.
• 🎵 Close applications that use audio (Spotify, YouTube, games).
• 🔄 Reboot Bluetooth: Activate Developer Mode (7 taps per version) MIUI in the phone settings. Go to Settings. → Additionally. → For developers, find the option to turn off Bluetooth (or Bluetooth Reset) and turn it on.

Pay special attention to applications that monitor location or use a microphone (e.g. Google Maps, Zoom), which can block Bluetooth resources.

1. Open Settings → Applications → Permissions.
2. See which apps have access to the Microphone and Location.
3. Temporarily disable permissions for suspicious programs and try to reconnect the headphones.

5. Hardware problems: diagnosis of headphones and telephone

If software methods didn't help, it could be physical malfunctions: Xiaomi's headphones (especially budget models) are sensitive to mechanical damage and moisture.

Signs of hardware problems:

• 🔴 The indicator on the case does not burn at all or flashes a non-standard color (for example, green instead of white).
• 🎧 One of the headphones does not turn on or makes a crackle.
• 🔌 Headphones do not charge in the case (check contacts for oxidation).
• 📶 Phone "sees" headphones, but can't complete pairing (Error "Connection failed").

How to check:

1. Test on another device: Try connecting your headphones to another phone, tablet or PC, and if they work, it's a problem in your smartphone.
2. Case check: Put your headphones in the case and see if charging starts (the indicator should catch fire). If not, the problem is in the contacts or the battery of the case.
3. Diagnostics of the phone's Bluetooth module: Try connecting other devices (such as a speaker or watch) if nothing connects, your Bluetooth chip may have failed (repair required).

If the headphones fell into the water or were subjected to severe blows, there is a high probability of damage to the Bluetooth controller inside the earphone, in this case, only a replacement board will help (repair cost is from 1,500). ₽).

💡

If the Xiaomi Buds 3 Pro headphones don't connect after a fall, try tapping the body carefully, sometimes helping to restore contact between the connectors inside.

6. Hidden MIUI settings for stable connection

MIUI contains a few hidden parameters that can affect how Bluetooth works, and they are often overlooked even in official instructions.

Settings to improve the connection:

1. Disable A2DP Hardware Offload (helps with audio interrupts): Activate Developer Mode (7 taps on MIUI Version). Go to Settings → Additional → Developer. Find the option to Turn off A2DP hardware acceleration and turn it on. Reboot the phone.
2. Change Bluetooth codecs: In the same developer settings, find Bluetooth Codecs. Try changing the codec from SBC to AAC or aptX (if supported).
3. Power Saving Disconnect for Bluetooth: Go to Settings → Battery → Energy Saving. Select Power Saving Settings → High Performance Mode.

For Xiaomi 11/12/13 series models, it is also useful to disable the Automatic Device Switch function (may interfere with stable connection):

1. Open Settings → Connections and Sharing → Bluetooth.
2. Put three points on it (⋮) → Additional settings.
3. Turn off the automatic sound switching option.

💡

If Xiaomi headphones are connected but the sound is interrupted, it is the fault of the SBC codec. Switch to AAC in the developer settings.

7. Alternative ways of connecting

If standard pairing doesn’t work, try workarounds:

Method 1: Connect via the Mi Earphones app

Some models (for example, Mi True Wireless 2) require the use of a proprietary application for the first connection:

1. Install Mi Earphones from Google Play.
2. Launch the app and follow the instructions on the screen.
3. If the headphones are not defined, click Add the device manually and select the model from the list.

Method 2: Use of the “For All” regime

On some firmware, MIUI helps enable visibility mode for all devices:

1. Open Settings → Bluetooth.
2. Put three points on it (⋮) → Visibility.
3. Select Apparently for all devices for 2-5 minutes.
4. Try to connect the headphones in this window.

Method 3: Connecting via ADB (for power users)

If the headphones are defined but not connected, you can try resetting them via ADB:

adb shell settings put global bluetooth_headset_priority 0


adb shell settings put global bluetooth_a2dp_on 1

After completing the commands, restart the phone.

FAQ: Frequent questions about connecting Xiaomi headphones