The situation when one of the headphones Xiaomi AirDots stops working in pair with the other, is one of the most common problems among owners of budget products. TWS-Instead of playing stereo, the device starts to work in mono mode, or the left and right channels do not "see" each other at all. Synchronization often occurs due to a software failure, when the internal logic of Bluetooth modules stops correctly processing signals from the smartphone.
The main reason is that each AirDots has its own pairing memory. When that data conflicts, the headset can't create a single network. Fortunately, 90 percent of the time, the problem is solved by forcing the settings to factory settings, which clears the modules' internal memory and makes them "get to know" each other again, ignoring old bugs.
Before you start taking drastic measures, it is worth checking the trivial things: the level of charge and the purity of the contacts. Partial discharge of one of the modules can lead to its automatic shutdown, which is perceived by the user as a synchronization error. Make sure that both earphones were in the case for a sufficient time to fully charge, and the metal contacts are cleared of oxides or earwax.
Diagnosis of the problem and the main symptoms
The first step in fixing a malfunction is to accurately determine the nature of the malfunction. Users often confuse problems with the Bluetooth module of the smartphone and the malfunction of the headphones themselves. If the indicator on one of the headphones flashes differently from the other, or does not light up at all when removed from the case, this is a sure sign of desynchronization.
Note the behavior of the indicators. In normal operation, when the headset is ready to pair, the indicators should flash in synchronous white. If one flashes quickly and the second flashes slowly, or the colors are different (for example, red and white), then the communication between the channels is broken, in which case the smartphone sees not one stereo headset, but two separate mono devices.
⚠️ Note: If the indicator on one of the headphones is constantly burning red even outside the case, this may indicate a deep battery discharge or a fault in the charging circuit, and not a software failure.
It's also worth checking the list of Bluetooth devices in your phone, and when you desynchronize, you can see two entries: Mi True Wireless EBs. Basic_L Having two separate devices instead of one Mi True Wireless EBs Basic confirms that the headphones have lost communication with each other and work independently.
Full reset (Hard Reset)
The most effective way to restore performance is to completely reset, which is to force the configuration files in the modules' memory to be overwritten, and make sure that the Bluetooth on the smartphone is turned off before you start to try to automatically reconnect during the setup process.
Place both earbuds in the charge case and make sure they're magnetized. The lights should turn red to signal the start of charging. Now you need to press and hold the touchpads on both headphones at the same time. The retention time is about 20 seconds. At which point the lights will flash red several times, then go out or light up white.
☑️ Complete reset algorithm
Once the lights are gone, remove the headphones. They should automatically go into pairing mode. It's important not to try to connect them to the phone right away. Give them 5-10 seconds to find each other. When the left-right link is restored, one of the lights goes out, and the other one will blink slowly, waiting for the smartphone connection.
⚠️ Note: During the reset procedure, do not remove the headphones from the case prematurely. Interrupting the process during the flashing of indicators can lead to incorrect recording of the configuration.
If the standard procedure didn’t work the first time, repeat the cycle 2-3 times. Sometimes the controller needs several attempts to properly initialize the communication protocol. Make sure that the fingers are dry and fit tightly to the touch areas, as insufficient contact can prevent the reset command from being executed.
Cleaning the list of associated devices
Often the problem is not the headphones themselves, but the “garbage” that has accumulated in the memory of the smartphone. The phone may try to connect the device using an old, no longer relevant protocol.
Go to your smartphone's Bluetooth settings. Find Mi True Wireless EBs Basic (or AirDots) on the list. Click on the gear icon or information icon next to the device name. In the menu that opens, select "Forget the device" or "Cancel pairing." If there are duplicates with the prefixes L and R, delete them all without exception.
| Action. | Purpose | The result |
|---|---|---|
| Removal from Bluetooth | Clearing the phone cache | The phone stops seeing headphones |
| Turning off Bluetooth | Resetting the protocol stack | Stopping background search processes |
| Re-energizing | Initializing Clean Search | Ready for the new |
Once the list is cleared, turn off Bluetooth completely on your smartphone, wait 10 seconds and turn it on again. Only then do you re-pair. A fresh connection profile will allow you to set the correct parameters of codecs and channels without conflicting with previous settings.
Why does the phone see two devices?
Checking the charging case and contacts
The physical state of the charging case plays a critical role in synchronization, and it's in the case that the headphones communicate and charge, and if the contacts are contaminated, one of the modules may not receive enough power, leading to it turning off or going to sleep mode, which is perceived as an error.
Carefully examine the golden contacts on the headphones themselves and the pins inside the case, which often accumulate earwax, dust or oxides. Use a cotton swab lightly soaked in alcohol solution to clean the case. Mechanical cleaning should be done carefully so as not to damage the soft spring contacts inside the recess of the case.
Also check the charge of the case itself. If the indicator on the case does not light up when the cable is connected, the internal battery of the case may be discharged, in this mode, it may not give a wake-up signal to the headphones, and they remain off or cannot synchronize with each other.
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Use a dry toothbrush to clean the speaker mesh and contacts carefully, which not only improves charging, but also improves sound quality.
Update the firmware through the application
The manufacturer regularly releases updates to stabilize the operation of Bluetooth modules. If the headphones are connected but are unstable, it is worth checking the software version. For Xiaomi and Redmi devices, the official tool is the Xiaomi Earbuds app (formerly Mi Earbuds).
Install an app from Google Play or the App Store and plug in your headphones. The main menu will show your battery status and current firmware. If a new version is available, a red dot or update button will appear next to the number. The update process is critical to fixing data protocol bugs.
The way to renewal:
Home → Select the → Firmware → UpdateWhen upgrading, keep your headphones in close proximity to your phone and do not open the case. Interrupting the process can "brick" the module, after which it will be extremely difficult to restore it. Make sure that the charge of the case and headphones is at least 50% before the procedure.
⚠️ Warning: Do not try to update your firmware if your phone battery is less than 30% dead.A sudden shutdown of your screen or system may interrupt your data transmission.
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The current firmware often contains patches that correct problems with the desynchronization of specific batches of headphones.
Hardware malfunctions and when it is time to change
If neither reset nor cleanup nor flashing has helped, there is a high probability of hardware failure. TWS-It's very small and degrades over time, and if one earphone discharges much faster than another (for example, in 15 minutes), its battery fails.
It's also possible for a Bluetooth antenna or chip to fail inside one of the modules, which often happens after a fall or moisture, and in such cases, the software methods are powerless, and physical damage requires replacing a faulty module or buying a new kit.
Xiaomi AirDots is a highly integrated device, and home disassembly and repair are almost impossible without special equipment and chip soldering skills. Once the warranty has expired, it is often easier to buy a new model than to look for donor parts.
Can I use one headphone?
Prevention and proper operation
To avoid the recurrence of synchronization problems, it is important to follow the rules of operation: do not allow the full discharge of headphones to zero. Lithium polymer batteries do not tolerate a deep voltage drop, which leads to unstable operation of the power controller.
Rub the contacts regularly and do not store the headset in high humidity or extreme temperatures. Temperature changes can cause condensation inside the case, which leads to short circuits and malfunctions in the logic of the microcontroller.
Compliance with these simple rules will extend the life of your AirDots and provide stable stereo sound throughout its life. Remember that electronics require careful care, especially in the format of True Wireless, where every gram of weight and millimeter of space matter.