The situation when Xiaomi or Redmi wireless headphones stop working in pairs is one of the most common problems of users. TWS-Instead of stereo, you hear a track in one ear, or both of these are playing different channels independently, a phenomenon called desynchronization, and it can occur on both new and long-term devices.
The reasons for this behavior lie in software failures of the Bluetooth protocol, the discharge of one of the modules or the accidental activation of the mono-call mode. Often the user, taking the gadgets out of the case, does not even notice that the left and right channels have lost communication with each other. Reconciling the pairing requires a clear understanding of the algorithm of actions, since simply reconnecting to the phone rarely solves the problem.
In this guide, we will take a look at all the technical details of True Wireless Stereo modules and provide step-by-step instructions for forced synchronization. You do not need to carry the device to the service center unless it is a physical break in the speaker or battery. Most cases are solved by the correct reset sequence.
⚠️ Warning: Before any manipulations, make sure that both the headphone and the charge case are charged at least 50%. Interrupting the flashing or reset process due to battery discharge can lead to complete inoperability of the device.
The principle of TWS and the reasons for desynchronization
True Wireless Stereo technology involves two independent modules being combined into a single speaker system, typically one headphone (Master) receiving a signal from a smartphone, and the second (Slave) receiving data from the first, and if the communication between Master and Slave is disrupted, they begin to behave like two different devices, which causes the problem of working separately.
The main trigger for desynchronization is often an unstable Bluetooth signal or interference from other wireless devices. When the data protocol loses the partner status packets, the module goes into standby or standby mode, a protective mechanism that prevents the system from freezing.
Also worth considering are the software conflicts of the smartphone operating system: Updating Android or iOS can change the way A2DP profiles are handled, leading to incorrect channel allocation, and in rare cases, the culprit is overcrowded Bluetooth cache memory on the phone itself.
Basic diagnostics and charging check
Before you go to complex resets, you need to rule out the trivial physical reasons. Often one of the headphones simply discharged faster than the other because of the design of the case or contamination of the contacts. Visually determine the level of charge of each module through the Mi Wear widget or standard Bluetooth menu.
Carefully inspect the contact areas on the headphones themselves and inside the charging case. Gas, dust, or oxidation may prevent one module from fully charging while the other is fully charged. Use a dry cotton swab or a slightly damp fabric without pile to clean.
Check the indicators. When you put them in a case, the LED should light up to signal the start of charging. If one of the modules does not respond to the socket, the problem may be mechanical, in which case the software methods of restoring communication will be useless.
Full Reset (Hard Reset) Method
The most effective way to get Xiaomi or Redmi headphones to "see" each other again is to perform Hard Reset, which clears the modules' internal memory of old pairing profiles and force them to pair-search mode.
There are several variations of reset depending on the model. For most AirDots and Earbuds devices, the touch zone compression method is relevant, you need to remove both modules from the case and simultaneously touch the touch panels for 5-10 seconds before changing the color of the indicator.
Once the lights are turned off or flashed in a specific way (usually red or white), the procedure can be considered complete. Now you need to place the devices back in the charging case for 10-15 seconds to stabilize the power controller, only then you can open the case cover for new synchronization.
⚠️ Warning: Do not bring your headphones close to your ears during reset, as a loud beep or static noise may be heard at the time of reset, which can damage your hearing.
Profile removal and re-pairing
A critical step is to clean the listing devices on your smartphone. If you have an old profile with an incorrect configuration in your phone's memory, the system will try to connect to it, ignoring the new headphone settings. Go to Settings → Bluetooth and find your device.
Click on the gear or information icon next to the headphone name and select "Forget device" or "Cancel pairing." After that, it is recommended to completely turn off the Bluetooth module on the phone and turn it on again, this will restart the communication protocol stack.
Now open the case lid with the headphones (without removing them) or remove the modules if the model requires manual activation. The list of available devices should show the name of your headphones. When connected, the system will automatically allocate the roles of Master and Slave.
Specificity of reset for different models Xiaomi
Different headphone lines from Xiaomi and the Redmi sub-brand may have different sensor logic and display. There is no universal code for all models, so it is important to consider the features of your version of the device when performing a reboot.
Below is a table that systematizes reset methods for popular models. If your model is not on the list, try the universal method of long-term sensor clamping described above.
| Model headphones | Resetting method | Indication of success | Features |
|---|---|---|---|
| AirDots / Redmi Buds | Hold both sensors for 5-7 seconds | Triple flashing red | Require extraction from the case |
| Mi True Wireless 2 / 2S | Hold the sensors down for 10-15 seconds. | The indicator flashes 3 times | Sensors may be insensitive. |
| FlipBuds Pro | Case button (10 seconds) | White flashing of indicator | Resetting through the case button |
| Buds 3 / 3 Pro | Hold both headphones 10 seconds | The indicator is burning red. | Support for noise reduction |
For models with a button on the case case, such as FlipBuds or some versions of Air 2, the procedure is simplified. You do not need to touch the headphones themselves. You just need to put them in the case, open the lid and pinch the functional button on the back or inner wall of the case until the LED indicator changes state.
Using the Mi Wear app and software updates
For advanced users of the Xiaomi ecosystem, the official Mi Wear app (formerly Mi True Wireless) is available, which allows not only to track the charge, but also to check the version of the headphone firmware. Outdated software often contains bugs that cause desynchronization.
Go to the device settings in the app and find the "firmware update" section. If a new version is available, be sure to install it by putting your headphones in your case and connecting your phone to your Wi-Fi network. The update process can take several minutes, while you do not open the app.
Also in the Mi Wear app, there is often a "Find Headphones" or channel testing feature that helps determine whether the speaker is physically working or the problem is solely in the software channel.
⚠️ Warning: Do not interrupt the firmware update process. If the headphone battery sits down while writing new software, the device can only be restored to service center through the programmer.
What to do if nothing helps
If neither reset nor reconnect nor update the firmware has returned the stereo sound, there is a possible hardware malfunction, which could be a failure of the Bluetooth antenna in one of the modules or a deep discharge of the battery, which no longer holds charge.
Try connecting your headphones to another smartphone or tablet, and if you have a recurring problem on a third-party device, it's definitely the headset, and if the other phone is working perfectly, you should reset the network settings on your main smartphone.
In extreme cases, you can try to freeze a static charge, and to do this, the headphones (without a case) are placed in a sealed bag and put in the freezer on the back of the chest. 15-20 They're then allowed to warm up to room temperature and try to sync again, which is a method that helps in the rare cases of software controller freezes, but it's not a guaranteed solution.