Xiaomi headphones work separately: solutions to the problem

When Xiaomi or Redmi wireless headphones stop working in pairs, it's familiar to many budget and mid-range owners: The device can only play sound on one side, or the left and right channels sound completely independent of each other, a phenomenon often called out-of-synchronization, and it doesn't necessarily indicate a fatal breakdown of electronics.

The most common problem is software failure, where Bluetooth modules within the case forget each other or misplace the master device's priority. Dissynchronization can occur after a battery is discharged to zero, a failed firmware update or connection to a new smartphone without first reset. Understanding the nature of the conflict between channels is the first step to restoring full stereo sound.

In most cases, recovery takes no more than ten minutes and does not require soldering or replacement of components. However, ignoring the problem can lead to one of the modules going into deep sleep and no longer responding to commands. So it is important to act consistently, using proven methods of forced reboot and cleanup of the pairing memory.

Diagnosis: why does desynchronization occur

Before you go into action, you need to rule out the trivial reasons. Often users believe that the gadget is broken, although the problem lies in the contamination of contacts or critical discharge of one of the parties. Bluetooth connection between two headphones (TWS) is usually more stable than communication with a smartphone, but it requires minimal charge to maintain synchronization.

One common cause is what's called "master conflict." In TWS, one headphone (usually the right one) acts as the main one, transmitting the signal to the second one. If that communication channel is disrupted due to interference or a software error, the second headphone can go into standby mode or start operating as an independent device, and it's worth checking if your headphones are connected to another device nearby that may have intercepted the connection.

⚠️ Note: If one of the headphones emits intermittent cracking or flashes the indicator in a non-standard mode (for example, red when charging), this may indicate physical damage to the battery or speaker.

For accurate diagnosis, perform a visual inspection of the charging contacts on the headphones themselves and inside the case. The presence of oxides or dust can prevent one of the modules from fully charging, causing it to be turned off prematurely. Use a cotton swab lightly soaked in alcohol to clean surfaces carefully.

Basic reset settings (Hard Reset)

The most effective way to eliminate the out-of-synchronization is to completely reset the settings to factory settings, which force the internal memory of the Bluetooth modules to be re-discovered, and it is important to do everything strictly according to the instructions, since a violation of the timing can lead to the fact that the reset process will not be completed.

To start, place both earbuds in the charge case and make sure they start charging (the indicators are on fire). Leave them open in the case for 10-15 seconds. Then find the function button on the case case case (if there is one, as in the Mi True Wireless Earbuds Basic 2 or Air 2 models) or use the touch zones on the headphones themselves.

If the button is missing, the technique changes. You need to remove the headphones from the case and perform a series of touches on the touch areas. Usually it is 5 quick presses or one long hold (about 20 seconds) until the red indicator appears. Then put them back in the case and close the cover. In 10 seconds, open the case again, the headphones should start flashing, signaling the pairing mode.

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Once you have done the reset, be sure to remove the old Xiaomi Earbuds connection (or the name of your model) from the Bluetooth list on your smartphone before reconnecting.

The method of forced pairing of the left and right channel

If a standard reset didn't work and the headphones still work separately, you need to manually initiate a pairing search between the headphones themselves, bypassing the phone.This method often helps when devices are "stuck" in mono-work mode. First remove the device from the Bluetooth list on the phone and turn off the Bluetooth itself on the smartphone to avoid intercepting the signal.

Take both earbuds out of the case. Now your job is to make them see each other. Depending on the Xiaomi model, this is done either by triple tapping the sensor on both earbuds at the same time, or by tapping five times, you should see the lights start flashing blue and red (or white) colors, which means that you're looking for a pair.

Once the headphones find each other, one of the indicators (usually on the earpiece) will go out or start flashing less often, and on the main one will continue to blink, waiting for a connection to the phone. Only then you can turn on Bluetooth on your smartphone and search for the device. If you do not do this, the phone can connect to only one channel, ignoring the second.

It's important to understand that in forced pairing mode, the headphone that first left standby or was activated by touch is the priority. So try to activate both devices as much as possible at the same time. If the desynchronization is repeated regularly, there may be a problem in the firmware version.

Update the firmware through the Mi Home app

Many users ignore the software, but it is often the bugs that cause desynchronization. Xiaomi regularly releases updates for its own software. TWS-models that fix connection stability issues. To check for updates, you will need the Mi Home or Xiaomi Earbuds app (for the first time). Android/iOS).

Connect your headphones to your smartphone and open the app. If the devices are compatible, they will show up in the list of devices. Click on the three-dot icon or go to the device settings. If an update is available, a notification will appear. The firmware updates automatically, but the process cannot be interrupted.

When you upgrade, keep the case open and the headphones inside. Don't close the app or lock the smartphone screen, as this can interrupt the data transfer. Once the update is successful, the headphones will automatically reboot, which often solves the problem when the left and right channels are lost from each other.

The Redmi AirDots and Mi True Wireless

Xiaomi's different headphone lines have their own reset features. For example, the popular Redmi AirDots (first generation) often require double reset. First you reset the settings, then you remove the device from the phone, and then you repeat the reset procedure a second time before pairing. Ignoring this step is a common reason why the method "does not work."

The Mi True Wireless Earbuds Basic 2 series models (often known as Airdots 2) have a hidden reset button inside the case, between the contacts to charge the headphones. To activate, use a thin object (such as a toothpick) and press a button when the headphones are inside.

⚠️ Note: Do not use metal objects (needles, paper clips) to press the reset button inside the case if it is charged at this point.This can short-circuit and cause the case motherboard to fail.

For wirelessly charged models such as the Mi Air 2, the procedure may be characterized by the absence of a physical button, in which case the control is carried out exclusively through the touch zones. Holding the sensors on both earphones for 20-30 seconds (until the indicator lights up in orange) initiates a reset. It is important not to remove the headphones from the case at this point, unless the instruction requires otherwise.

Problems with charging the case and batteries

Often the cause of desynchronization is trivial: uneven charge. If the contacts in the case are contaminated or the case is discharged, one earphone can be charged 100%, and the second headphone can only be charged 40%. When operating, the device with a lower charge will turn off first, tearing the stereo pair. Check whether the charge indicators on both headphones burn when placed in the case.

It's also worth considering the memory effect or degradation of lithium-ion batteries in cheap models. 2-3 In the years since, the battery capacity could have dropped critically, and in that case, they can operate on a scale that is very low. 10-15 The battery degradation is a physical wear and tear that cannot be fixed software.

Try charging the case from another power source (not from the source). USB-port of the computer, and from the network adapter 1-2 Amperas. Weak current may not be able to "swing" the charge controller inside the case, leaving the headphones uncharged. Use the cable that comes with the kit, or a quality analog with a cross-section of wires at least 0.5 mm.

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If after fully charging the case and headphones for 2 hours the problem persists, most likely, it is not the level of charge, and the logic of the Bluetooth modules.

When service repairs are needed

There is a scenario where software methods are powerless: If one of the headphones doesn't physically see the other one even after resetting, cleaning contacts and updating the firmware, the Bluetooth antenna module may have failed, this happens after falls, moisture (even sweat condensation), or voltage surges when charging.

Another sign of hardware failure is that one of the headphones is heated when charging or operating, and this indicates a short circuit inside the battery or on the control board, and it's dangerous to run such devices, because the battery can swell or ignite.

In case of hardware breakdown, it is more cost-effective to purchase a new model, since the cost of replacing the fee in an authorized Xiaomi service is often 60-80% of the price of a new device.

Frequently Asked Questions (FAQ)