The situation when Xiaomi or Redmi wireless headphones stop working synchronously is one of the most common problems of users. TWS-It's often the case that you take the device out of the case, and the music is only playing in one ear, or the second earpiece just doesn't show signs of life, and it stays off. This causes panic, as it seems that the expensive gadget is out of order, but in most cases the problem lies not in a physical breakdown, but in desynchronization or software failure.
Owners of popular models such as Mi True Wireless Earbuds Basic 2, AirDots or Redmi Buds 3 regularly experience one module losing touch with a smartphone or its “brother”, due to the Bluetooth protocol, which requires perfect coordination between the master device (which connects to the phone) and the subordinate (which receives a signal from the first), breaking this chain leads to the fact that you hear sound from only one side.
Before you take your device to a service center or write angry reviews, you need to conduct a comprehensive diagnosis. In this article, we will discuss in detail the mechanical, software and electrical causes of malfunction, you will learn how to perform a full reset, how to clean contacts and when it is time to sound the alarm.
⚠️ Warning: If the headphones were in water or there are obvious signs of impact, self-repair can be dangerous.
The main reasons for the desynchronization of wireless modules
The fundamental problem of the majority TWS-And the architecture of the headphones is that, often, one headphone is the Master, which connects to the phone, and the other is the Slave, which connects to the first one, and if the communication between the two is broken, the phone sees only one device. This can happen after updating the smartphone operating system, battery discharge below the critical level or simply because of the software "glitch".
Another common cause is contamination of the contact areas, where the metal pins in the case and the headphones themselves accumulate earwax, dust and oxides, causing one of the modules to simply not charge while in the case, and the user removes the headset thinking it is charging, but at the end of the operation, receives a discharged device that does not turn on.
Also, the effect of radio interference should be considered. In places where there are large numbers of Bluetooth devices (malls, offices), the signal can be lost. If one earphone is in the "blind zone" or its antenna is shielded by the user's body, the connection can break. The software sometimes does not have time to reconnect the module, and it remains in sleep mode.
- 🔋 Uneven charge: One module discharged faster due to battery wear or poor contact.
- 📡 Failure of the pairing protocol: devices have “forgot” each other and work independently.
- 🧹 Sensor pollution: proximity sensors or touch pads are covered with dirt.
- 📱 Bluetooth cache conflict: the phone has erroneous connection data.
Mechanical diagnostics and cleaning of contacts
The first step in fixing a malfunction is to thoroughly check the physical condition of the device. Often, the problem is solved by simple cleaning. Take a dry cotton swab or microfiber slightly soaked in alcohol (not abundantly!), and wipe the golden contacts on the headphones themselves and inside the charging case. Make sure that there is no sulfur on the grid on the speaker that can block the sound, creating the illusion of breakage.
Pay attention to the charge indicators. When you put your headphones in your case, does the LED light up? If one of them doesn't show a charging indication, then the current is not coming. Try pressing the earpiece lightly with your finger in the case nest -- if you're charging, it means the problem is loose fit or strain of the contacts. In some cases, it helps to carefully flex the spring-loaded pins inside the case with a toothpick.
Check the integrity of the body. If the earphone fell, the internal plume of the speaker could move away or the membrane could be damaged. Knock lightly on the non-functioning earpiece with your finger (not much!) and listen. If you hear rattle or crack, you may have damaged the speaker. Also check if the control button (if it is mechanical) or the touch area sticks.
☑️ Diagnosis of physical condition
It's important to understand that moisture is the enemy of electronics. Even if the model is moisture-proof, sweat or rain can eventually destroy the contacts. If you notice green plaque on the contacts, it's oxidation that needs to be removed carefully so as not to close the chain.
The procedure for complete reset (Hard Reset) headphones
If mechanical cleaning doesn't work, you need to reset your headphones, which is the most effective way to make Xiaomi and Redmi headphones "see" each other again. The reset process varies depending on the model, but the general principle is the same: you need to force the devices to pair, clearing the internal memory of the old settings.
For models without screens and apps (e.g. AirDots, Basic 2), the procedure usually looks like this: place both headphones in a case, make sure they charge. Then press and hold the touch zones on both headphones simultaneously for 10-20 seconds (sometimes you need to remove them from the case).
Reset algorithm for most models:
1. Remove the device from the phone’s Bluetooth list (“Forget the device”).
2. Put the headphones in the case.
3. Hold the sensors for 10-15 seconds before flashing the indicators.
4. take out the headphones and wait for them to connect with each other.
5. Perform the pairing again.For more advanced models, such as the Redmi Buds 3 Pro or Xiaomi FlipBuds, the reset is often done through a button on the case itself. Find a small hole or button on the case case, hold it for 10 seconds with the lids open. The indicator on the case should start flashing white, which means entering mode (conjugation).
⚠️ Warning: Do not bring your headphones close to your ears during reset, and when reset, they may emit a loud beep or squeak that is unpleasant to your hearing.
Bluetooth setting and removing the device profile
Often the problem is not with the headphones themselves, but with the smartphone. The phone can "remember" an old, erroneous connection profile. Go to your Android or iOS device's Bluetooth settings. Go to your Xiaomi headphone list and hit "Forget the device" or "Cancel pairing." This is a critical step that many people ignore.
After deleting the profile, it is recommended to clear the cache of Bluetooth services. On Android, this can be done through the developer menu or special applications, but more often than not, just reboot the smartphone after removing the device from the list. Then turn on Bluetooth again and try to find the headphones.
If you have a Xiaomi or Redmi smartphone, use the Mi Wear app (or Xiaomi Earbuds) to manage headset settings, update firmware and perform software resets. Sometimes, updating firmware through the app solves the problem of desynchronization, as manufacturers often release patches to improve connection stability.
| Model headphones | Type of discharge | Indication of success | Annex |
|---|---|---|---|
| Mi True Wireless Basic 2 | Sensor retention 15 seconds | Triple flashing. | No (standard BT) |
| Redmi Buds 3 Lite | 5 times press the case | The indicator flashes 3 times | Mi Wear |
| Xiaomi FlipBuds Pro | Case button 10 seconds. | White flashing | Xiaomi Earbuds |
| Redmi Buds 4 Pro | Retaining areas on headphones | Orange light | Mi Wear |
What if the phone doesn’t see the headphones after resetting?
Problems with charging and battery
One of the hidden reasons why one earphone doesn't work is because the battery is so deep, and the lithium polymer batteries in the miniature devices are very sensitive, and if the earphone was sitting idle for a long time, the voltage might have dropped below the launch threshold, and in this case, the standard case time (30 minutes) might not be enough.
Try leaving your headphones in a case for a few hours (3-4 hours), even if the indicators don't burn immediately. Sometimes the charge controller takes time to "rock" the battery. Use a charger with a current of no more than 1A, as powerful fast-charging units can work incorrectly with the case headphones.
If one earphone discharges much faster than another (for example, it runs 1 hour versus 4 hours for the second), this is a sign of battery degradation. The battery's chemical resource is exhausted and it no longer holds capacity. In this case, software methods will not help - it requires a replacement of the battery, which is often economically impractical.
💡
Use wireless charging for the case, if supported.This eliminates the problem of poor contact of the charging cable and allows you to visually control the process (the indicator on the case usually lights up when installed on the base).
When repairs or replacements are needed
There are situations where software resets and cleanings are useless. If after all the manipulations, one earphone is silent, cracks, or constantly loses communication, there is probably a failure of the hardware, it can be an antenna dump, damage to the speaker plume, or combustion of the Bluetooth controller.
Warranty repairs are the best option if the device is new. However, if the warranty is over, the cost of repairs is often 70-80% of the price of a new device. In the case of low-end Redmi or AirDots models, it is cheaper to buy new ones. For flagship models (FlipBuds Pro), repairs can make sense.
You should also consider replacing your headphones if you have more 2-3 years of active use: battery life in TWS-The headset is limited to approximately 500 After that, battery life will steadily decrease, regardless of whether one headphone or both are running.
⚠️ Warning: Don't try to open your headphones yourself unless you have experience.The inside is very compact, and damage fragile plumes or puncture the battery very easily, which can cause a fire.
💡
If after cleaning contacts, full reset and reconnect the problem persists on different devices – it is a hardware breakdown that requires replacing the module.