What to do if the second headphone Xiaomi does not connect

A situation where one TWS-The headphone from the pair ceases to show signs of life or connect to a smartphone, familiar to many owners of Xiaomi and Redmi equipment. Often, the user discovers the problem at the most inopportune moment, when the left or right channel suddenly disappears sound, and the device in the Bluetooth list is displayed as a mono headset. This is annoying, as full stereo sounds become impossible, and the music sounds flat and unnatural.

The reasons for this behavior can be many, from the banal discharge of the battery to software failures in the synchronization protocol between modules. In most cases, the problem lies not in the physical breakdown of the speakers, but in the violation of communication between the right and left earphone, which should work in a single bundle. Reconnecting to the phone often does not help, because the root of the evil lies deeper — in the lack of communication between the modules of the headset.

Before you bring the device to the service center, you should try to reanimate the gadget yourself. There are a number of proven methods to bring the second headphone back to life without using complex equipment. Resetting the settings and the correct sequence of actions during mating solve the problem in 90% of cases, saving time and money to the owner.

⚠️ Before starting any manipulations, make sure that the charging case and the headphones themselves are charged at least on the headphone. 30-40%. Working with a fully discharged battery can lead to false diagnostic results.

Diagnostics and initial contact check

The first step is always visual and physical. Often the second earbud doesn't plug in just because it's not charging in the case, and its battery is dead. Carefully look at the contact areas on the ends of the headphones and inside the charging compartment, and they often accumulate earwax, dust or oxides that prevent current from passing.

To clean, use a dry cotton swab or stick slightly soaked in alcohol solution. Gently wipe the contacts, trying not to damage them. After cleaning, insert the earpiece into the case and check if the charge indicator has caught fire. If the LED does not light up, try pressing the earpiece a little with your finger or moving it - perhaps the contact has simply gone away.

If the charging indication appears, leave the device in the case for 15-20 minutes. Sometimes a deep discharge takes time for the lithium polymer battery to "swing" before it can take a full charge. Only after a confident charging signal appears can you move to software methods to solve the problem.

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Use a toothpick with a wool wrapped around the tip to clean the speaker mesh – this often improves sound if the problem was membrane contamination.

The procedure for complete reset (Hard Reset) headphones

The most effective way to reconnect between modules is to reset to factory settings, which causes the headphones to forget previous (pairing) and re-find each other by setting the main and the slave channels from scratch. The algorithm for actions may differ slightly between different models, such as Mi True Wireless Earbuds Basic 2, Redmi Buds 3 or AirDots, but the general principle is the same.

First, remove the Bluetooth device on your smartphone, find the name of your headphones in the connection menu and click "Forget the device" or "Disable." Then put both headphones in the charge case, but do not close the lid (if it is transparent or has an indicator on the outside).

Now you need to pinch the touch pads or physical buttons on both headphones simultaneously, hold it for a long time, usually 10 to 30 seconds, until the indicators start flashing red and white (or other color depending on the model) several times in a row, at which point the memory of the Bluetooth modules is cleared. After the indicators go out or change the pattern of blinking, release the buttons.

⚠️ Note: During the reset procedure, do not remove the headphones from the case and do not connect the charger unless the specific model instruction requires the opposite.

After a successful reset, the indicators should flash quickly, signaling a pairing mode, at which point the headphones must first find each other (usually only one of them flashes, and the second fades or blinks less often), and only after that they can be searched for by the phone.

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The key is, if the headphones don't sync with each other after the reset, the phone will see two identical devices, so you have to make sure that the phone only sees one headset name.

Problems of synchronization of the left and right channel

A common situation is that the phone sees the headphones, connects to them, but the sound comes from only one, which means that the stereopara is not working, the right and left channels are independent, and the phone is connected, for example, only to the right, considering it a mono-device, to fix this, you need to force the search for the neighbor.

Remove both earphones from the case at the same time. If they do not start flashing synchronously or one of them quickly went out, then the connection is lost. Try quickly pressing 5 times on the touchpad of one of the headphones (usually the right one), then 5 times on the other. On some Xiaomi models, this action is forced to start the mode TWS-synchronization.

If you don't have an automatic connection, you can use a manual reconnection method. Connect to one earphone via Bluetooth, play music, then turn off Bluetooth on your phone. Put the working earphone in your case, close the lid for 5 seconds, then pull out both. Often after this procedure, they find each other.

Features of connection for different models Xiaomi

Different headphone lines have their own nuances in control and display. Understanding the specifics of your model will help you diagnose a problem faster./master-mode, and the more expensive Mi True Wireless problems may be associated with the application.

Below is a table with characteristic features and solutions for popular series:

For models that support Mi Wear or Xiaomi Earbuds (formerly Mi True Wireless), it is recommended to go to the device settings. There is often a function "Find Headphones" or forced update firmware. firmware is the software code that controls the operation of the Bluetooth module, and its errors often cause communication to break.

If you have a wireless charging or active noise cancellation (ANC) model, make sure that these features don't conflict.Occasionally, disabling the ANC temporarily solves the connectivity problem, allowing you to detect a software bug in the sound processing algorithms.

The Influence of Bluetooth Version and Operating System

The problem may not be in the headphones, but in the smartphone. Bluetooth protocols are backwards compatible, but when you connect old and new versions (for example, Bluetooth 5.2 headphones and 4.2 phones), there can be conflicts of encoders, especially for high-resolution codecs such as aptX or LDAC.

Try changing your Bluetooth settings on your phone. Go to Settings → Bluetooth → (cog next to the device). If there's a High-quality audio switch or a codec selection, try changing it to SBC or AAC. These are basic codecs that guarantee connection stability, even if sound quality is available.

Settings -> About Phone -> MIUI version (check updates)


Settings -> Bluetooth -> Forget the device

It's also worth checking if the phone has an energy-saving mode that aggressively restricts background processes, can "kill" the Bluetooth service process, considering it an unnecessary power user, add a Bluetooth control app (if any) or system service to exclude the battery.

When a visit to the service center is required

If all software methods are exhausted and the second headphone is still silent, there is probably a hardware malfunction, which can be a failure of the battery (it no longer holds charge even for a minute), damage to the Bluetooth antenna inside the case or oxidation of the board after moisture hits.

An alarming signal is the lack of response of the charging indicator even after a long cleaning of contacts and being in the case for more than an hour, you should also be alert if the earphone warms up strongly when trying to connect or emits extraneous clicks and static noise.

⚠️ Warning: Don't try to open the headphones yourself. They're glue-constructed, and leakproofing them will permanently disable them, and also disable warranties.

In such cases, the only reasonable solution is to contact an authorized service center Xiaomi, specialists will conduct diagnostics on special equipment and tell exactly whether the device is repairable or easier to purchase a new kit, especially if the warranty has already expired.

Prevention of Connection Problems

To avoid the situation in the future, it is important to follow simple rules of operation: do not allow a deep discharge of headphones to "zero" for a long time. If you do not plan to use the headset for a month or more, charge the case and the headphones themselves up to 60-70% and store them in a dry place.

Regularly wipe the contacts with dry cloth. Sweat and moisture are the main enemies of electronics. Also try not to drop the case, as the blows can disrupt the internal soldering of components, which will lead to unstable operation of one of the channels.

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Main conclusion: Regular hygiene of contacts and avoidance of full discharge prolong life TWS-Headphones and prevent 80% of connection problems.