The situation where Xiaomi wireless headphones play separately is one of the most common problems when using the device. TWS-Instead of playing stereo together, the right and left channels start working independently, turning into two mono-device. This is not only annoying, but also completely disrupts the perception of the music material, making it impossible to watch movies or play games.
The reason is that Bluetooth communication between the headphone bowls themselves is broken, not between the headset and the smartphone. TWS (True Wireless Stereo) requires one ear to be a master transmitter to the second, but when the chain fails, this chain breaks, often the problem occurs after connecting to a new gadget or discharging the battery to zero.
Fortunately, 95% of the time, the malfunction is software-based and solved without going to the service center. You don't need any special tools, you just need to do a series of reconnect and reset actions sequentially. Below, we'll go through the recovery algorithms for different models, from Redmi Buds to Mi True Wireless Earbuds.
The main reasons for dissynchronization TWS-headset
Before embarking on radical treatments, it is necessary to understand the nature of the failure. Often users ignore simple factors that prevent Bluetooth modules from finding each other. For example, if one of the headphones died more than the other, it may have gone into deep sleep and not had time to sync with the master device at the time of extraction from the case.
Another common reason is the cache of connections in the memory of the smartphone. The phone can remember old configurations that conflict with the current state of the headset. If you previously connected the headphones to another phone or tablet, they could automatically connect to it, causing interference to the main device.
- 🔋 Different charge levels in the left and right earphone, causing a timeout connection.
- 📱 Active connections to other devices within Bluetooth range.
- 🛑 Software failure of the microcode inside one of the modules of the headset.
It's also worth considering the effects of third-party radio interference. If you're in a place with a large concentration of Wi-Fi routers or other Bluetooth devices, the communication channel can be overloaded, and in such conditions, the synchronization protocol between the "ears" can fail, and they start to work autonomously.
⚠️ Attention: If one of the headphones flashes red constantly or doesn't light up at all, the problem may be hardware. Check the charging contacts in the case - it may be that the earphone just doesn't charge or turn on.
Primary diagnostics and charge check
The first step is to eliminate the banal lack of power, because asymmetric discharge is a frequent visitor to active users, and if the left earphone is down 10% and the right earphone is down 90%, the system can consider the discharged device inoperable and not try a stereo pair with it.
Put both earbuds in the charge case and make sure the lights catch fire. Leave them to charge for at least 30-40 minutes, even if the lights show full charge, which is necessary for balancing the battery cells and stabilizing the voltage, which is critical for the correct operation of the communications controller.
When charging, make sure the case cover is open or the device is connected to the grid to avoid going into power saving mode, which may block some functions. After charging, wipe the contact pads with an alcohol wipe, as oxidation or skin fat can prevent data from being transferred when installed in the case.
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Use a cotton swab slightly soaked in alcohol to clean the gold contacts on the headphones and inside the case, which improves contact and eliminates charging errors.
The procedure for complete reset (Hard Reset) headphones
If the charge check didn't work, you need to do a full reset, which is the most effective method when Xiaomi headphones play separately, reset clears the internal memory of the headset from all saved profiles and makes the devices re-find each other.
The procedure may vary depending on the model. For most models without buttons on the body (for example, Redmi AirDots, Mi True Wireless Earbuds Basic), the algorithm is as follows: remove the headphones from the case, then press and hold the touch zones on both headphones simultaneously for 15-20 seconds. The indicators should flash red several times, then go out or light up white.
For models with a physical button on the case (e.g. Mi True Wireless Earphones 2, Air 2), place both headphones in the case, leave the lid open and press the button on the case for 10 seconds before changing the color of the indicator.
☑️ Reset algorithm TWS
It's important to reset away from a smartphone that's currently active, which will prevent automatic reconnection during the memory cleanup process, and when the headphones are reset, they'll go into pairing mode, and you'll have to look for them in the phone's settings as a new device.
Device removal and re-pairing
A key step that is often overlooked is cleaning the Bluetooth list correctly on your smartphone. If you have an old profile with the wrong parameters in your phone’s memory, the new sync may not work properly. Go to Settings → Bluetooth of your Android or iOS device.
Find your headphones (they may be called Redmi AirDots, Mi True Wireless or simply BT) on the gear icon or "i" next to the name and select "Forget device" or "Unpair pairing." Do this for all copies of the headphones, if there are several in history.
After cleaning the list:
- Turn off Bluetooth on your phone.
- Put the headphones in the case and close it for 10 seconds.
- Get both earphones out at the same time.
- Turn on Bluetooth on your phone and start searching.
Usually, one device appears on the list. If you see two identical names (like two Redmis). AirDots_R), It means that the stereo pair didn't make it, so if you do that, repeat the Hard Reset procedure that I described above, and try again.
What if there are two devices on the list?
Specifics of settings for different Xiaomi models
Different headphone lines have their own proprietary protocols, for example, the Redmi Buds series often requires the use of Mi Earbuds or Xiaomi Wear applications to work properly and update the firmware, which can solve the problem of desynchronization at the software level.
Mi True Wireless Earphones series models (Air 1, 2, 2S, 2 Pro) often use Qualcomm chips that are sensitive to the Bluetooth version on the smartphone. Make sure your phone has AAC or aptX codec enabled (if supported), as the standard SBC codec sometimes causes delays in signal transmission between channels.
| Model headphones | Type of management | Reset time (sec) | Indication of discharge |
|---|---|---|---|
| Redmi AirDots / Basic | Touch (touch) | 20-25 seconds | Double red flashing |
| Mi True Wireless Earbuds Basic 2 | Touch (touch) | 15-20 seconds | Triple flashing. |
| Mi Air 2 / 2S | The button on the case | 10 seconds. | White flashing |
| Xiaomi Buds 3T Pro | Touch/Appendix | 10s (in case) | Orange indicator |
For advanced models such as Xiaomi Buds 3 Pro or FlipBuds Pro, it is recommended to check for updates through the Xiaomi Earbuds app. Developers regularly release patches that correct connection stability errors. Updating the firmware is the only way to fix software bugs associated with channel allocation algorithms that cannot be fixed by a simple reset.
Compatibility issues and system settings of Android
Sometimes the problem isn't with the headphones, but with the smartphone operating system. Android has a feature called Absolute Volume Level that synchronizes the volume of the phone and headset, and conflict in this feature often causes one ear to play quieter or lose the sound.
To turn off this feature, you need to activate the developer menu. Go to Settings → About phone and 7 times click on the build number. Then go back to the main settings menu, find the section Additional → For developers. In the list of options, find the item "Disable absolute volume" and activate it.
⚠️ Warning: After changing the settings in the developer menu, be sure to restart the smartphone. Without rebooting, changes in Bluetooth protocols may not take effect.
You also have to pay attention to energy saving_MIUI_ Or other shells can kill the Bluetooth background process, considering it to be a battery-consuming process. Add the app you use to listen to music (Spotify, Yandex.Music) to the exclusion list or allow it to work in the background without restrictions.
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Turning off the absolute volume level in the developer menu solves 80% of problems with desynchronizing volume and channels on Android.
When repairs or replacements are needed
If none of the software methods worked, and the headphones continue to play separately, there is a high probability of hardware failure, most often the Bluetooth antenna or power controller in one of the modules fails, this can happen due to moisture, impact or production defect.
If the device is under a year old, take it to an authorized service center. TWS-Headphones are extremely difficult to disassemble because of their miniaturization and the lack of spare parts available for sale. The glue used in the assembly makes it almost impossible to disassemble without damage.
In some cases, cold treatment (an extreme measure): put the headphones in a sealed bag and put them in the freezer for 15-20 minutes, then let them warm to room temperature, a technique that sometimes restores contact in the chips, but is a temporary solution.