When wireless headphones stop syncing with each other, it is one of the most common problems among owners of accessories Xiaomi and Redmi. the user removes the gadget from the case, and instead of stereo sound hears music in only one ear or notices the dissynchronization of channels, which is annoying, as the device loses its basic functionality.
The reasons for this behavior can be found in software failures of the Bluetooth module, and in the banal discharged battery of one of the headphones. It often happens that one ear manages to connect to the smartphone faster, blocking the attempt of the second to find a “brother”. Understanding the mechanics of the True Wireless systems will help to diagnose the malfunction faster.
In most cases, you shouldn't panic, because you can solve the problem at home without going to the service center, you need to consistently perform a series of actions to reboot and reconnect the device, and in this article we will discuss all possible scenarios in detail and propose working recovery algorithms.
The main reasons for dissynchronization of the left and right ear
The first step to solving a problem is to understand what went wrong. Often users look for complex technical faults where it's about the basic things. Bluetooth requires a clear handshake between all three participants: the left earpiece, the right earpiece and the signal source.
If one of the links in this circuit falls out, the stereo doesn't form. For example, if the right headphone (Master) is connected to the phone and the left (Slave) does not receive the signal to pair, the sound will go to only one channel, this is a classic situation for budget models like Redmi AirDots.
- 🔋 Different charge levels: One earphone went completely depleted and went into a deep sleep while the second was still working, causing them to lose contact.
- 📶 Signal Interference: Being in an area with a lot of Wi-Fi routers or other Bluetooth devices can break the connection between the ears.
- 📱 OS cache errors: The smartphone remembers an old connection configuration that conflicts with the current state of the headset.
⚠️ Warning: If the headphones were in the cold or in high humidity for a long time, the chemical reaction in the battery may have slowed down, which is perceived by the system as a complete discharge.
Also worth considering that the software of the smartphone itself can incorrectly handle A2DP or HFP profiles. This is especially true for Android devices with aggressive battery optimization, which can "kill" the background processes of the Bluetooth module of one of the headphones.
Hard Reset method for different models
The most effective way to get the headphones to "see" each other again is to completely reset the headset, which clears the headset's internal memory of old pairing profiles and forces the devices to re-enter the pairing process. The algorithm for actions may vary depending on the specific Mi True Wireless model.
For models of the AirDots series and Redmi Buds without touch buttons (physical only), the procedure usually looks like this: you need to remove both headphones from the case and turn them off (click the button on the case). 5 Then, without putting it in the case, you need to press the buttons on both headphones simultaneously on the headphones. 15-20 seconds before the indicators start flashing white 3 once.
For more advanced models, such as the Mi True Wireless Earbuds Basic 2 or AirDots 2, the process can be automated. Just put both headphones in the charging case, open the lid and pinch the touch zones (or button on the case, if any) for 20-30 seconds.
☑️ Checklist before reset
It's important to keep the buttons on the back, and if the lights flash once and go out, that's just a shutdown, and you have to wait for a series of quick flashes or color changes, which indicates that you're entering Pairing Mode and clearing your memory.
Procedure for reconnecting devices
Once the reset is successful, it is critical to reconnect correctly, and many users make the mistake of immediately turning on Bluetooth on the phone, which leads to the smartphone “grabbing” one earphone, preventing them from connecting with each other.
First, make sure that the Bluetooth on your smartphone is completely off. Remove both earbuds from the case. They should automatically turn on and start looking for each other. At which point one of them (usually the right one) will blink quickly, waiting for the connection, and the second should blink slower or stop blinking when the connection between them is established.
Only after you have made sure that the indicators are synchronized (or one burns and the second goes out, which means pairing), you can turn on Bluetooth on the phone. AirDots_L", It's just "Mi AirDots").
| Model headphones | Indication of discharge | Retention time | Feature |
|---|---|---|---|
| Redmi AirDots | 3 quick blinks | 15-20 seconds | You need to turn it off before resetting. |
| Mi True Wireless 2 | Case indicator flashes | 10 seconds in the case | Sensory management |
| Xiaomi Buds 3 | White flashing | 10 seconds. | The button on the case |
| Haylou GT1 | Red and blue | 20 seconds | Automatic pairing |
What to do if your phone sees two devices?
Problems with charging case and contacts
Often the reason Xiaomi headphones don’t work together is because one of them doesn’t have a charge, and if you’ve been using headphones for more than a year, the contacts on the headphones themselves or inside the case may have become oxidized or contaminated.
Visually, this may be invisible, but a thin film of fat or dust creates high resistance, so the earphone does not charge when you're in the case, and the indicator on the case may show a false charge signal, and when you remove the devices, one of them is discharged and does not turn on, disrupting the stereo pair.
To solve this problem, take a cotton swab slightly soaked in alcohol (abundant!), and gently wipe the golden contacts on the ends of the headphones and pins inside the case. After drying the alcohol, place the headphones in the case and make sure that the indicators on them lit up red, signaling the start of charging.
⚠️ Warning: Never use metal objects (needles, paper clips) to clean contacts inside the case, which can short-circuit and render the charger's electronics inoperable.
Also worth checking is the charging cable itself and the power supply.Using powerful smartphone chargers (with more current) 1A) may sometimes work incorrectly with small case batteries if they do not have proper protection. USB-port of the computer or old charger on 5V/1And.
The Impact of Smartphone Software
Android and iOS operating systems periodically update Bluetooth drivers and energy saving policies. After a major OS update, old connection profiles may become invalid.
In your smartphone's Bluetooth settings, find your headphones in the list of previously connected devices and click "Forget the device" or "Delete." This is a critical step that many ignore. As long as the phone remembers the old encryption keys, it will try to connect using the old protocol, ignoring the new headphone reset.
In addition, Xiaomi smartphones with a MIUI shell or HyperOS have a "Mi Link" feature or similar optimizations that can intercept control of audio devices. Try temporarily disabling any "smart" Bluetooth features in the phone settings.
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If you have Android, go to Settings → Apps → Show System → Bluetooth → Memory and click Clear Cache before reconnecting. This will delete temporary files that interfere with the connection.
Sometimes it helps to reboot the Bluetooth module without fully restarting the phone, so turn on Flight Mode for 10 seconds, and then turn it off, and this will force you to restart all the radio modules in the device.
Hardware malfunctions and battery wear
If all software methods, including resetting and cleaning contacts, did not help, a hardware malfunction is likely. TWS-headphones use very compact lithium-polymer batteries, the life of which is limited by the number of charge-discharge cycles.
Symptoms of hardware breakdown:
- 🔋 Instant discharge: The earpiece is working 5-10 minutes after full charge, then switched off.
- 🔊 No sound: The earphone plugs in, the indicator lights up, but the speaker is silent or wheezing.
- 🌡️ Heating: One of the headphones or case gets noticeably heated during charging or working.
If the battery inside the headphone fails, recovery is possible only in a service center setting by replacing the battery. However, given the cost of repair and the complexity of disassembling Xiaomi monolithic cases, it is often more cost-effective to purchase a new model.
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If after 3 attempts of complete reset and cleaning of contacts headphones still do not synchronize, the probability of irreversible degradation of the battery in one of the modules is high.
There may also be problems with the Bluetooth antenna inside the case if the earphone fell from a height, and a microcrack in the soldering of the antenna output leads to loss of communication between the ear and the phone or between the headphones themselves.
Prevention and proper operation
In order to avoid the question of why Xiaomi headphones do not work together, you should follow simple rules of operation. Do not store the device in a discharged state for a long time. TWS-headset.
If you don’t plan on using your headphones for more than two weeks, charge them up to 60-70% and put them away in a dry place. Once a month, it’s recommended to run a charging-discharge cycle to activate the chemicals in the batteries.
Regularly wipe the speaker mesh from earwax. Clogged filter not only worsens the sound, but can also cause overheating of the speaker, which indirectly affects the work of the electronics of the earphone.
The myth of water resistance
Compliance with these simple guidelines will significantly extend the life of your Mi True Wireless and provide stable stereo sound throughout its lifetime.