Why Xiaomi Mi True Wireless is the only wireless headphone: reasons and solution

The situation when both headphones are removed from the case, but the sound is played from only one, is one of the most common problems owners face. TWS-Headsets. This is often called desynchronization, where the right and left channels lose communication with each other and begin to behave as independent devices. Instead of being combined into a stereo pair, a single headphone can stay in standby mode or connect to the phone as a mono-device.

The reasons for this behavior can range from a simple battery discharge to software failures in the firmware. Often users are faced with the fact that after removing from the charging case, the indicator lights up only on one of the modules. This does not always mean that the gadget is completely broken. In most cases, the problem is solved by a software reset or simple cleaning of the contacts without requiring a service center.

It's important to understand that the True Wireless architecture involves complex interactions between components. One earpiece is usually a master transmitter to the second (Slave). If the Master-Slave connection chain is broken, you'll hear silence in one of the ears. Below we'll go through all the possible causes and methods of eliminating them.

The main reasons for dissynchronization TWS-headset

The first thing to rule out is physical contact and charge. Often, one of the headphones just doesn't charge in the case because of oxidation of contacts or dust. If the device doesn't get enough power, it may not turn on when it's removed, creating the illusion of a breakdown. Check if the indicator is on when you put the module in the case.

The second common cause is a software failure in the Bluetooth stack of the smartphone or the headset itself. A smartphone can only "remember" one device from a pair, ignoring the second, which often happens after updating the phone's operating system or changing the playback source, in which case the list of conjugated devices requires complete cleaning.

⚠️ Attention: If the earphone was in water or was very hot, the problem may be damage to the battery or the charge controller.

Electromagnetic interference is also a factor to consider: In places with large concentrations of Wi-Fi networks or Bluetooth equipment, the signal between the headphones can be lost. Although modern Xiaomi and Redmi models have good protection against interference, in critical conditions, communication can be interrupted and one channel will be turned off to save energy.

Basic diagnostics and charging check

Before you go into complex manipulations, make sure the power system is working properly. Dirt and earwax are the main enemies of charging contacts. Even a microscopic layer of plaque can prevent the passage of current, which will leave one earphone discharged. Use a dry cotton swab to carefully clean the metal areas on the headphones themselves and inside the case.

Pay attention to the indicators. When placed in a case, the LED should light up (usually red or orange), signaling the charging process. If the indicator does not light up, try to press the earphone slightly with your finger. If it appears, it is the problem with poor contact. In some cases, blowing the case with compressed air helps.

🔌 Check the charging of the case itself: connect it to another cable or power supply to rule out problems with the power source.
🧹 Wipe the contacts with an alcohol napkin (voilless) to remove fatty plaque that is not removed by dry cleaning.
🔋 Leave the headset in the case on 30-60 minutes, even if the lights don't burn to try to "swing" a deeply drained battery.

If after careful cleaning and prolonged charging, the situation has not changed, move to software recovery methods. Often, the power controller goes into deep sleep and takes time to activate.

Full reset (Hard Reset)

The most effective way to solve the problem of desynchronization is to completely reset the headset to factory settings, which causes the headphones to “forget” previous connections and re-find each other, restoring the stereo pair. The process may be slightly different for different models of Xiaomi Mi True Wireless, but the overall algorithm is the same.

First, remove the device from the Bluetooth list on your smartphone. Find the name of your headset (such as Mi True Wireless Earbuds Basic 2 or Redmi AirDots) and select the option “Forget the device” or “Delete”.

☑️ Reset algorithm TWS headphone

Put both headphones in the caseMake sure the case is loaded.Clenching the sensory areas for 15-20 secondsWait for the flashing of indicators 3 times

Done: 0 / 4

Now place both earbuds in the charge case. Depending on the model, you either need to press the button on the case case case (if any) or pinch the touch areas on the headphones themselves while they are in the case. Hold the buttons for about 15-20 seconds. The indicators should start flashing quickly, usually in red, which signals a successful reset.

⚠️ Warning: During the reset procedure, do not remove the headphones from the case prematurely. Interrupting the process may cause them to remain in pairing mode and not connect to the phone.

After a successful reset, turn on Bluetooth on your smartphone and search for new devices. Now, only one device should appear on the list, not two separate devices (as if they did not pair), connecting to this single device automatically activates the second channel.

The Redmi AirDots and Mi True Wireless

Different generations of Xiaomi headsets have their own nuances, such as the popular Redmi AirDots and Mi True Wireless Earbuds Basic, where one headphone (usually the right one) works and the left one is silent, which is because the right one is the main one, and if communication between them is lost, the left one simply does not receive the signal.

The AirDots S and Pro series feature a reset button on the back of the case, which requires you to open the lid, leave the headphones inside and press the button for 15 seconds before changing the color of the indicator. The simpler versions without a button on the case use touch control: touch both headphones simultaneously for 5 seconds, then again for 10 seconds until they blink.

Compare the features of resetting for popular models:

Model	Availability of a button on the case	Resetting method	Indication of discharge
Redmi AirDots	No.	Sensor retention 15-20 seconds	Triple flashing red
Mi True Wireless Basic 2	No.	Sensor retention 15-20 seconds	Fast blinking.
Mi True Wireless Pro	Yeah (back)	Press 15 seconds	The indicator flashes white
Xiaomi Buds 3T	Yeah (inside)	The button inside the case 10 seconds	Orange blinking

You need to simultaneously touch the touch areas of both headphones while they are in the case or immediately after removal. If you do not succeed the first time, repeat the procedure 2-3 times.

What to do if sensors do not respond?

If the touch zones are not responding to the touch, they may have been affected by sweat or moisture. Wash the headphone surface with a dry cloth carefully. Also try resetting immediately after removing the headphones from the case while they are in pairing mode. Sometimes it helps to tap the earpiece lightly to activate the accelerometer that controls the sensors. Smartphone and Bluetooth settings Sometimes the problem isn't with the headphones, but with how the smartphone controls the connection. Android and iOS operating systems can cache old connection profiles, leading to conflicts, especially on Xiaomi smartphones with shells. MIUI or HyperOS, where energy saving is aggressive, it is recommended that the cache of Bluetooth services be completely cleared. To do this, go to your phone's settings, search for "Applications," select "Show All Apps," and search for "Bluetooth." Click "Clear Data" and "Clear Cache." This action is secure and won't delete your personal files, but will reset all Bluetooth network settings. You should also check the sound balance settings. → Special facilities → Hearing (the path may vary depending on the phone model) Make sure the left-right channel balance sliders are set in the middle. If the balance is shifted one way, the second earpiece will work very quietly or silent. Another important aspect is the Bluetooth version. If your smartphone is very old (Bluetooth 4.0 and lower), it may not work properly with new Xiaomi codecs, such as aptX Adaptive or other codecs. LHDC. In this case, try disabling high-quality codecs in the developer settings or in the Bluetooth connection menu, if such an option is available. Software firmware update Manufacturers regularly release firmware updates that fix connection errors and improve stability. For Xiaomi headphones, the main management tool is the Xiaomi Earbuds app (for global versions) or Mi Home. If you have an iPhone, use the Xiaomi Earbuds app from the App Store. Connect a working headphone to the phone and open the application. If the headset is supported, you will see its image and the current battery charge, the smartphone should be updated for a few minutes. 💡Redmi AirDots often require the Xiaomi Earbuds app, while flagship Mi True Wireless Earbuds are better suited to the Mi Home with the China or Europe region installed. Updating the firmware can overwrite the damaged memory sectors responsible for synchronizing the channels. This is especially true if the problem occurred after a sharp battery drain or failure on the previous connection. If the app doesn’t see the headphones or the update doesn’t help, you can try updating the firmware through third-party Android utilities, such as: MI True Wireless EBs Assistant Basic. However, use them with caution, as an incorrect firmware can permanently disable the device. When you need a repair or replacement, unfortunately, not all cases are solved software, and if none of the above methods worked, there is a high probability of hardware failure, and most often, one of the headphones' battery fails. Lithium polymer batteries eventually degrade and stop holding a charge, even if the indicator is 100%. Another common problem is the failure of the Bluetooth module or the speaker due to moisture. IPX4, sweat or rain can eventually cause the contacts to corrosion inside the enclosure, and you can see this visually from the greenish coating on the speaker grid or the contacts. 🔋 The battery does not hold a charge for more than 15 minutes - a replacement of the battery is required. 🔊 Wheezing, crackling or no sound at maximum balance – damaged speaker. 📡 The headphone is not visible in pairing mode even after resetting - the Bluetooth module is defective. ⚠️ Attention: Self-automatic TWS-Headphones are extremely difficult because of the adhesive connection of the case, there is a high probability of damage to the case or the plume when trying to replace the battery, it is recommended to contact authorized service centers. If the warranty is still valid, safely carry the device to the store. Problems with discharging and discharging a single channel are a guarantee case. If the warranty is over, repairs are often economically impractical, since the cost of new budget models Redmi or Xiaomi can be comparable to the cost of recovery. 💡If after a complete reset, cleaning of contacts and flashing one headphone still does not work - the problem is hardware in nature and requires a replacement of the battery or module. Prevention of problems with TWS-To avoid a situation where only one earpiece is working, follow simple rules of operation. Regularly wipe contacts in the case and on headphones with dry cloth. Do not allow a deep discharge: If you're not using the headset for a long time, charge the case fully once a month. Try not to leave the headphones in the case with the battery dead for a long time. This leads to a deep discharge, after which the charge controller can block charging for safety reasons. Also avoid extreme temperatures: don’t leave the headset in the sun in the winter or summer in the car. Periodically, every few months, perform a preventive reset (Hard Reset), even if there are no problems. This helps to clear the internal error buffer and maintain connection stability. Follow these guidelines will prolong the life of your True Wireless headphones. Why doesn't the headphone charge in the case? Most often the reason is oxidation of contacts or displacement of the magnet. Try to move the headphone in the socket. If the indicator lights up, then the contact is unstable. It requires cleaning with alcohol. If it doesn't help - maybe the battery of the case itself is dead or the headphone charge controller is out of order. Yes, most Xiaomi models support mono-earmuff mode. However, in this case, the second Mimi headphone will be a contact, but it is unstable. It requires cleaning with alcohol. If it is fast flashing and the Air is in white mode, which it is in the best color. If only red flashes, the earphone is discharged. If the red is always on, charging. How do you connect Xiaomi headphones to your iPhone? The process is similar to connecting to Android. Press the touch zones on the headphones to enter pairing mode (blink), then select the device from the list in the Bluetooth settings on your iPhone. For advanced settings, download the Xiaomi Earbuds app from the AppStore.