Why wireless headphones don’t connect to Xiaomi phone: solutions

The situation when the loved ones TWS-Headphones suddenly stop seeing Xiaomi smartphone, familiar to many users of the Android ecosystem, this can happen after another system update, due to a software failure or conflict of versions of Bluetooth protocols. Owners of Redmi and Poco models face this no less often than users of the flagship Mi-series.

The problem is often not the physical breakdown of the speakers, but the software settings of the gadget itself. MIUI or its new version of HyperOS can aggressively control energy saving by disabling communication modules to save charge, and the accumulated cache files and errors in the list of previously paired devices also affect.

In this article, we will break down a step-by-step algorithm that will help restore the connection in 95% of cases, we will touch on both standard reboot methods and hidden engineering menus available on Xiaomi devices.

Basic causes of lack of connection and primary diagnosis

Before you go to complex manipulations, you need to eliminate basic errors. Often users forget that the headphones are in standby mode or connected to another gadget. Bluetooth module phone can simply "hang" due to prolonged operation without rebooting.

The first thing to do is check the charge of both devices, because the low energy level in the case of headphones may prevent them from entering pairing mode, and you should also make sure that the phone is geolocated, since in modern versions of Android it is a mandatory requirement for finding peripherals.

⚠️ Warning: If the headphones have previously been connected to another phone or tablet, they may automatically try to connect to it, ignoring your Xiaomi.

Next, you should do a full smartphone restart, which clears RAM and restarts system services, including wireless drivers. Once you turn on your phone, try to find the device on the list of available again.

If simple methods didn’t work, it’s worth checking if the earphone is in “mono” mode. Some models require both headphones to be removed from the case simultaneously to activate pairing mode. In the case of Xiaomi Buds or AirDots, it often helps to reset to factory settings through the clamping of the sensor or button on the case.

Bluetooth configuration and management of previously used devices

The most common cause of conflicts is junk on a list of previously connected devices. The phone may be trying to reconnect to an outdated profile, which blocks the new connector. You need to go to the Settings → Bluetooth menu and find your device in the “Conjugated Devices” list.

Click on the gear or arrow next to the headphone name and select "Forget the device" or "Cancel pairing." After that, it is recommended to clear the cache of the Bluetooth service itself. To do this, go to Settings → Apps → All applications, click three dots in the corner, select "Show system processes" and find in the list "Bluetooth".

• 🔘 Click "Clean" and select "Clean All" for a complete module data reset.
• 🔘 Restart your phone and try pairing again.
• 🔘 Make sure that Bluetooth settings do not include “Everybody Sees” mode all the time, it is better to use a visibility timer.

It is important to note that Xiaomi smartphones with MIUI shells sometimes have a duplicate profile error. If there are several entries with the same name on the list (for example, "Mi True Wireless EBs Basic" and "Mi True Wireless EBs Basic 1"), delete them all.

Once you clear the list, try to start the search again. If the device is found but says "Pairing error" or "Unconnected", the problem may be in the Bluetooth version of the protocol. Older headphones may not work well with the new Bluetooth 5.2 or 5.3 standards, requiring manual codec selection.

Problems with energy saving and optimization of MIUI

Aggressive battery optimization is a scourge of all Xiaomi smartphones, which can force the Bluetooth adapter to shut down or limit the background processes required for stable connectivity, especially in the “Energy Saving” mode.

To rule out this factor, go to Settings → Battery. Make sure the power saving mode is turned off. It is also worth checking the settings of a particular application if you are using a proprietary tool from the headphone manufacturer (for example, Mi Wear or Xiaomi Earbuds).

Another important aspect is the permission to work in the background. The system can kill the connection process if the screen is turned off. Go to the application settings, find the Bluetooth system service (if it is displayed as a separate application) or the headphone control app and allow them to work in the background.

Remember that Adaptive Brightness and proximity sensor sometimes conflict with communication modules when the phone is in your pocket. If the connection is breaking in your pocket, try turning off the high-bitrate Bluetooth audio codec option in the developer settings.

Resetting headphones and entering pairing mode

If the phone is working, the problem is almost certainly with the headphones themselves, which can be in sleep mode or have an error in internal memory. For most Redmi Buds, Mi True Wireless and third-party brands, the reset procedure is versatile but nuanced.

Put the headphones in the case and close the lid. Wait 10 seconds, then open the lid without removing the headphones. Find the function button on the case (usually behind or inside between speakers) Hold it for 10-15 seconds until the indicator flashes white or orange (depending on the model), which means entering forced pairing mode.

⚠️ Note: When you drop your headphones through a case, they can automatically connect to the last known device. Make sure the Bluetooth on your old phone is turned off when you reset.

For models without a button on the case (such as some versions of AirDots), the reset is done through the touchpads. You need to remove the headphones, turn them off (clamp the sensor for 5 seconds), and then pinch the sensors on both headphones simultaneously for 20 seconds.

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If the case indicator doesn't light up when you plug in the charger, wipe the contacts on the headphones and inside the case with an alcohol wipe. Contact oxidation is a common reason that headphones "think" they're charged and don't turn on.

After a successful reset on the phone, Xiaomi needs to start the search again. the name of the device may change (for example, suffix " L" or " R"), which indicates a successful break in communication between channels and readiness for new synchronization.

Engineering menu and advanced Android settings

For power users who don't have standard methods, Xiaomi's engineering menu is a powerful diagnostic tool that allows you to test communication modules regardless of the main system. Be careful, changing unknown parameters can lead to unstable operation.

To enter the engineering menu, open the Phone app and enter the code ##6484##. In the CIT menu that opens, select "Bluetooth Test" or "Bluetooth Address." Here you can check if the hardware module sees any devices at all.

System command to reset Bluetooth via ADB (requires PC):


adb shell pm clear com.android.bluetooth

Also in the developer menu (includes 7-fold tap on "Version" MIUI" In "About Phone" there is an option "Disable absolute volume level." If there is a sound but very quiet, or the headphones plug in and turn off immediately, turning on this option can solve the problem of codec compatibility.

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Using the CIT engineering menu is the most reliable way to determine whether the problem is software (Android crash) or hardware (Bluetooth module burns out).

If in the test CIT phone does not find any device, even third-party, there is a high probability of hardware damage to the antenna or plume Bluetooth/Wi-Fi modules, as they often operate on the same frequency and are tied to a single chip.

Hardware Conflicts and Codec Compatibility

And don't forget about the physical interference, because metal cases, magnetic holders, or just a thick layer of plastic can shield the signal, and try to remove the case and hold the headphones right up to the top of the smartphone, where the antennas are usually located.

There is also a codec incompatibility problem. Xiaomi often uses aptX Adaptive, LDAC, or LHDC codecs. If your headphones only support basic SBC or AAC, the phone may try to impose a high bitrate, which leads to a connection break. You can change the priority codec in the developer menu under "Bluetooth Audio Codec".

• 🎧 Try switching the codec to SBC check the stability of the connection.
• 📡 Turn off 2.4GHz Wi-Fi as it causes severe interference to Bluetooth.
• 🔄 Update the firmware of the headphones themselves through the Mi Wear app if it is available in your area.

In rare cases, the problem is overheating your smartphone. When you're under high load, the processor and communication modules can reduce the power of the radiation. Let the phone cool down and check the connection again.