The situation when new or previously working wireless headphones suddenly stop finding a device or refuse to connect is familiar to many users of the Xiaomi ecosystem. This can happen with models of the Mi True Wireless line, Redmi Buds or neckband headsets. Most often, the problem is not physical damage, but in a software conflict or overflow of the interface memory buffer.
The user is faced with the fact that the indicators flash, but in the list of available devices, the smartphone does not see them, or the connection is cut off immediately after establishing communication. Bluetooth protocol requires precise synchronization between the receiver and the transmitter. Failure at any stage - from battery discharge to errors in the firmware of the smartphone - can break this bridge.
In this article, we will discuss in detail the diagnostic algorithms that will help restore the functionality of the gadget without visiting the service center, you will learn how to correctly reset settings and why old entries in the phone’s memory interfere with new synchronization.
The main reasons for Bluetooth synchronization failures
The first thing to do is to eliminate some of the most basic factors that are often ignored: A discharged battery in one of the headphones can block the entire TWS system, because the devices must communicate with each other before transmitting sound to the phone. If the left or right earbud is discharged to zero, it will not leave deep sleep.
Another common reason is overflowing the list of stored devices. Xiaomi smartphones based on MIUI or HyperOS can store dozens of profiles, and when cache overflows new connections are difficult to install. Also affected by distance: the standard range of Bluetooth 5.0 and above is up to 10 meters in open space, but walls and Wi-Fi routers can reduce it to a couple of meters interference.
- 📱 Bluetooth Version Conflict Between Phone and Headset.
- 🔋 Critically low charge in the case or the headphones themselves.
- 📡 Interference from microwave ovens or powerful Wi-Fi routers.
- 🧠 Error in the operation of the Bluetooth-driver of the operating system.
It is important to understand that software bugs of the Android or iOS operating system can temporarily block the communication module.Rebooting a smartphone solves the problem in 40% of cases, as this clears RAM and restarts system services.
⚠️ Warning: If the headphones were in the cold for a long time, the lithium polymer battery could have entered a state of protection. 30-60 minutes before attempting to charge.
The procedure for a complete reset of headphones Xiaomi
If a simple shutdown didn’t work, you need to perform Hard Reset, which returns the headphones to factory settings by removing all saved profiles and resetting the internal logic of the chip. The algorithm may differ slightly between Xiaomi and Redmi models, but the general principle is the same.
Place both headphones in the charge case and make sure they start charging (indicators should burn). Without closing the lid, find the function button on the case case or the touch areas on the headphones themselves. Most modern models, such as the Mi True Wireless Earbuds Basic 2 or Redmi Buds 3 Pro, require a long hold on the button on the case.
☑️ Reset algorithm TWS headphone
Hold the reset button for about 10-15 seconds. The indicators should change the pattern of blinking: they usually start flashing quickly in white or orange, which signals a successful reset. After that, the device goes into pairing mode, and you can search for it in the phone settings again.
For models without a physical button (such as some versions of Mi AirDots), touch control is used. You need to remove the headphones, turn them off (clutching the sensor for 5 seconds) and then turn them back on, holding the sensors for about 20 seconds until the reset indication appears.
Features of reset for different series
Bluetooth settings in Xiaomi and Android smartphones
The problem may not be the accessory, but the settings of the smartphone itself. There are features in the MIUI shell that can conflict with the connection of audio devices. First of all, check whether flight mode or energy saving is on, which limits the background operation of Bluetooth.
Go to the Settings menu → Bluetooth. Find your headset in the "My Devices" list, even if it shows as "Not connected." Click on the gear icon or arrow next to the name and select "Forget the device" or "Cancel pairing." This is a critical step, as the old profile may contain configuration errors.
Next, clear the Bluetooth cache. Go to Settings → Apps → All apps. From the menu, select Show System Processes (usually three dots in the corner). Find in the list Bluetooth, click About, and select Clear → Clear All.
| Action. | The way is on the menu | The result |
|---|---|---|
| Deletion of profile | Bluetooth → Device List → Forget | Removal of the encryption key |
| Resetting of service | Annexes → Bluetooth → Clear everything. | Resetting cache and temporary files |
| Resetting network settings | Advanced settings → Reset → Reset Wi-Fi and Bluetooth | Full return of network settings |
| Verification of the version | About the phone → version of MIUI | Updating drivers |
⚠️ Note: After cleaning Bluetooth data, you will have to re-enter passwords from Wi-Fi networks and reconnect all previously used devices (watches, bracelets, cars).
It’s also worth checking if Absolute Volume is activated in the developer menu, which sometimes causes volume desynchronization and connection loss. To access this menu, click 7 times on the build number in the About Phone section.
Compatibility issues and Android versions
Often, users find that the headphones do not work correctly after an operating system update. New versions of Android 12, 13 or 14 can change the audio encoding protocols (codecs). If the headphones only support the old SBC codec, and the phone tries to impose LDAC or AptX, the connection can be unstable.
You can find the Bluetooth Codec in the developer menu and force it to SBC or AAC, which will lower the sound quality but increase the stability of the connection, and there's also the Bluetooth Version option on the menu, which you can try to switch if it's available for change.
And don't forget about equalizers and third-party audio control apps, which can intercept audio and cause conflicts, try to start your phone in safe mode, and if you're in this mode, your headphones are connected and running smoothly, then one of the apps you've installed is at fault.
For iPhone (iOS) owners, the situation is similar: iOS updates sometimes “break” the connection with non-certified devices, in which case resetting network settings in the Main → Delay or Reset iPhone → Reset → Reset network settings helps.
Hardware malfunctions and diagnostics
If software methods fail, consider the possibility of physical failure. Contact oxidation in a charging case is a common problem. If headphones don't charge to 100%, they may go to sleep ahead of time, which is perceived as a loss of connection.
Wipe the contacts on the headphones and inside the case with a dry lilac-free napkin or cotton swab slightly soaked in isopropyl alcohol. Make sure the magnets in the case are working and tightly press the headphones against the charging contacts.
- 🔍 Check the indicators: whether they burn when placed in the case?
- 🔌 Try another charging cable and power supply.
- 💧 Check for moisture (indicators) LDI may turn red).
- 🔊 Check the speaker: can you hear cracking or static noise before the cliff?
💡
Use a soft bristling toothbrush to clean the speaker mesh and charge contacts carefully. The scrambled earwax often blocks the proximity sensors, causing the earbud to "think" it's not in the ear and shut down.
In rare cases, the Bluetooth module itself fails inside the earphone, which can happen after a drop or a power surge when charging with a powerful unit, and if one earphone is working and the other is silent even after reset, hardware breakdown is likely.
Specificity of connection to PC and other devices
Connecting Xiaomi headphones to your computer often raises more questions than to your phone. In Windows 10 and 11, Bluetooth drivers may not work properly. Make sure the PC has the original driver from the motherboard manufacturer or USB-Adapter, not the standard Microsoft driver.
When connecting to a PC, it is important to choose the right profile. Windows can see the device as "Headphones" (sound only) and "Headset" (sound and microphone). If you only want sound, choose the first one, since the headset profile uses mono mode and lower quality.
Some motherboards have Wi-Fi and Bluetooth (-shared) antennas, and if you have poor Wi-Fi reception, Bluetooth can also be disruptive. USB-Adapter away from the router or use USB-extensioner.
💡
The stability of the connection with the PC directly depends on the version of the drivers and the absence of frequency conflicts with the Wi-Fi router.