The situation when wireless headphones Xiaomi, Redmi or Haylou stop working in pairs, is one of the most common problems owners have. TWS-The user is faced with the fact that the list of Bluetooth devices of the smartphone displays only one module, or the sound comes exclusively from one channel while the second is silent».
The reason is that the logic bridge between the right and left earphones is broken, and unlike wired models, the sound is transmitted first to the master device, which then relays it to the slave, and if this process is interrupted, the system perceives the headset as two independent mono-device or ignores one of them completely, and in most cases, the software failure can be fixed on its own without resorting to the services of a service center.
It is important to understand that modern True Wireless Stereo models use complex pairing algorithms. Failure can occur due to the battery discharge of one of the modules below the critical level, updating the smartphone operating system or static electricity. Before panicking and looking for a warranty card, it is worth trying a number of proven methods of recovery.
⚠️ Attention: If one of the headphones is physically damaged (moisture, impact), software methods may not help. Visually inspect the charging contacts and body for deformities.
The main reasons for dissynchronization TWS-headset
Understanding the root of the problem helps you choose the right method of solving. Most often, Xiaomi headphones stop seeing each other because of a banal discharge. If you haven't used the headset for a long time, one of the modules could discharge to zero faster than the other, which led to a deep discharge of the power controller.
Another common scenario is a Bluetooth address conflict, where a smartphone could "mark" both headphones as separate devices with different types of devices. MAC-And that's often the case when you reconnect to a new gadget or reset the network settings on your phone.
- 🔋 Critical discharge: one module went into a deep sleep and does not have time to turn on at the same time as the second.
- 📡 Interference: work in the zone of strong noise of the air (offices, shopping center) breaks the connection between the channels.
- 📱 Bluetooth cache: conjugation buffer overflow in Android or iOS operating system.
Also worth considering are the firmware bugs of the headphones themselves. In budget models like the Redmi Buds 3 Lite or AirDots, reconnection algorithms can be unstable, sometimes just putting them in a case and closing the lid for 10-15 seconds to reboot the controllers.
⚠️ Warning: Do not try to charge headphones from powerful fast charging units for smartphones (more 20W). The current may be too high for a small headphone battery, causing the charge controller to fail.
Full Reset (Hard Reset) Method
The most effective way to make headphones “friend” again is to perform a full factory reset, a process that clears the modules’ internal memory of old pairing profiles and configuration errors. The procedure may differ from Xiaomi and Redmi models to models, but the general principle is the same.
First, remove the device from the Bluetooth list on your smartphone. Find the name of your headset in the settings, click on the gear icon or arrow and select Forget the device or Unpair the pairing. Then turn off the Bluetooth on the phone so that it does not automatically try to reconnect during the procedure.
☑️ Algorithm of resetting headphones
Now, put both earbuds in a charge case, make sure they sit tightly in the sockets and the contact pads charge (usually a red light light), then you need to pinch the touch areas on both earbuds at the same time, holding time varies from 5 to 20 seconds depending on the model.
Watch for the display. Most Mi True Wireless Earbuds models should often flash white or red to signal a successful reset, and then the headphones will go into TWS pairing mode, and you can reconnect them to the phone.
| Model headphones | Action for discharge | Indication of success |
|---|---|---|
| Redmi AirDots / Mi True Wireless Earbuds Basic | Press the buttons for 15-20 seconds (earphones in the case or in the hand) | Triple flashing red |
| Xiaomi Mi True Wireless Earphones 2 / 2s | Hold the sensors for 5 seconds (in a case with an open lid) | White indicator flashes 3 times |
| Redmi Buds 3 / 3 Pro | Press the functional button on the case 10 seconds | Case indicator flashes white |
| Xiaomi FlipBuds Pro | Hold the button on the case for 10 seconds | Case indication resets |
It's important to do everything quickly and clearly, and if you don't do it the first time, repeat the procedure by completely discharging your headphones and recharging them, which will help calibrate the power controller.
Problems with charging contact groups
Often the reason that only one earphone is connected is trivial - it just doesn't charge. TWS-Headsets use compact lithium-polymer batteries that are very sensitive to the quality of contact, and if one of the modules doesn't fit tightly to the pins in the case, it discharges and turns off.
Visually inspect the contact areas. The golden patches on the headphones themselves and inside the case should be free of oxides, film or dirt. Even a thin layer of skin fat can prevent current from passing, which leaves the earphone discharged while the second one is running.
- 🧹 Contact cleaning: Use a cotton swab lightly soaked in isopropyl alcohol to wipe the contacts.
- 🔍 Landing Check: Make sure the case magnets tightly attract the earpiece and it doesn't stagger.
- 🔌 Case charging: the case itself can be discharged even if the indicator is on. 30-60 minute.
There's a common problem with protective films. New headphones often come with tiny blue or transparent stickers on the contacts. Many users forget to remove them, which causes charging to go off at all. Check for these films.
⚠️ Warning: Do not use metal objects (needles, pins) to clean contacts inside the case.You can close the contacts of the case battery, which will lead to short circuit and fire.
Bluetooth settings and smartphone cache
Sometimes the problem isn't with the headset, it's with the smartphone. Android or iOS may not properly store device profiles. If you've previously connected these headphones to other phones or tablets, your current device may have accumulated garbage.
The first step is to clean the pairing list. Go to Bluetooth settings, find all the records associated with your headphones (sometimes there may be two: one for music, one for calls, or just take), and delete them all. After that, restart your smartphone. This action clears the Bluetooth stack and resets the suspended services.
For advanced Android users, there is an option to reset network settings. This will bring all network settings (Wi-Fi, Bluetooth, Mobile data) back to factory settings. The path usually looks like: Settings → System → Settings Reset → Reset settings Wi-Fi, mobile networks and Bluetooth.
It's also worth checking if the mono-sound mode is activated in special features, which is designed for people with hearing impairments and brings the stereo signal into one channel, and if it's on, the second earpiece can be silent, creating the illusion of a breakdown.
Specifics of the Mi Wear and Xiaomi Earbuds application
To make the ecosystem work, Xiaomi recommends using proprietary apps: for older models, this is Mi True Wireless Earbuds, for new models, Mi Wear or Xiaomi Earbuds. Through these programs, you can see the real charge of each headphone individually and update their firmware.
If the app shows that one earphone has 0% charge and the other 100%, despite being in the case for a long time, this is a direct sign of a hardware malfunction or deep discharge. Try to "swing" the battery, leaving the earphone in the case on charging for several hours.
Firmware Update is a powerful bug fixer. Developers regularly release patches that improve connection stability. If the app sees both headphones but they don't work properly, run a search for updates.
- 📲 Interface: the application will show animations of connecting the left and right channel separately.
- 🔄 Auto-Update: Some models are updated themselves when connected to a smartphone with the Internet.
- 🔧 Control setup: the app can reassign tap functions, which sometimes helps to “revive” the sensor.
The app also has a headphone search feature, so if one of them gets lost in the apartment, you can turn on loud sound playback, which will help you understand whether the speaker is working at all, or the problem is in the communication module.
Hardware malfunctions and diagnostics
If the software methods, resetting and cleaning contacts did not help, there is likely a hardware breakdown. TWS-Headsets are most likely to fail batteries. Lithium-polymer batteries degrade over time, especially if the headphones were used actively or, conversely, did not charge for a long time.
Symptoms of hardware failure: the headphone warms up when charging, the charge lasts a few seconds and immediately resets, or the device only works 5-10 minutes. In such cases, a battery replacement is required, which in budget models is often economically impractical.
It's also possible that the Bluetooth module inside the earphone could fail because of a voltage surge or moisture, and even if the body was intact, the condensate could oxidize the board, in which case the earphone is no longer determined by the case controller.