The situation where a wireless headset stops working as a single system is familiar to many owners of the technology: you take Xiaomi Redmi Buds or Mi True Wireless Earphones out of the case, but the music plays only in one ear, and the second one is silent or makes strange sounds, which is a classic sign of dissynchronization of modules, when the right and left channels lose communication with each other.
Instead of panicking or bringing a device into service, you should understand the algorithms of the Bluetooth protocol. TWS-Headphones use a complex circuitry where one device is the master and the second is the slave, and breaking this hierarchy causes the gadgets to stop seeing each other.
In this article, we will look at the causes of failures, from firmware errors to physical contamination of contacts, and learn to reset completely and correct the devices again to restore stereo sound.
TWS principles and reasons for desynchronization
True Wireless Stereo technology means that there are no physical wires between the headphones and the smartphone, but also between the headphones themselves. It uses a radio channel to transmit the audio stream, which requires stable connection. When Xiaomi headphones are not connected to each other, this often means that one of the modules has "forgot" its partner.
The main reason for the disconnection is to leave the range or break the connection to the smartphone at the wrong time, for example, if you put one earphone in the case while the second one was still active, the system could fix this as an error, and also affects the version of the Bluetooth protocol and interference in the air.
Sometimes the problem lies in the software of the smartphone itself. Aggressive energy savings in the MIUI or HyperOS shell can force Bluetooth background processes to shut down, which knocks synchronization between channels.
⚠️ Warning: Don’t try to connect your headphones to a new phone until they’re synced, which will cause two identical names to appear on the list of devices, and the stereo mode won’t work.
It's important to understand the difference between losing communication with your smartphone and losing communication between your ears. In the first case, the gadget is simply not visible in the search, in the second case, it is visible but it does not work correctly. To diagnose, you need to check the indicators: if they flash at different frequencies or colors, then the pairing mode is activated only on one of them.
Basic diagnostics and charge check
Before we go to the complex manipulation of reset codes, we need to eliminate trivial factors. Often users ignore the state of the charging contacts, which are covered with oxides or sweat. Dirt on the contacts leads to the fact that one of the headphones in the case simply does not charge and goes into a deep discharge.
Check for a safety film on contacts inside the case. On new Xiaomi devices, sometimes they forget to remove the insulation, which causes the charge to not come. Also make sure that the case itself is charged: the indicators on the case should light up when you put the headphones inside.
- 🔋 Check the charge level of both headphones separately through the widget on the lock screen.
- 🧼 Wipe the metal contacts on the headphones and inside the case with a dry cotton swab.
- 📱 Make sure that your Bluetooth settings do not save multiple profiles of your device.
If one earphone is dead, it may not even be on the case. Leave them to charge for 30-40 minutes without the phone. Only then you can try to turn them on again. Sometimes the system takes time to wake up and start looking for a partner.
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Use wireless charging for the case if it is supported to make sure the problem is not with the USB cable, which can give unstable current.
Complete Reset (Hard Reset)
Bluetooth headphones
Xiaomi
For models with touch buttons (e.g. AirDots, Redmi Buds), you usually need to pinch the touch zones on both headphones at the same time, hold it for about 15-20 seconds until the indicators flash red several times, which is a signal that the memory is cleared.
In some versions, such as Mi True Wireless Earbuds Basic 2, the reset is done by tapping the touch area five times. It's important to do the actions quickly and synchronously. If the first time failed, repeat the procedure by putting the headphones back in the case and pulling them back out again.
☑️ Reset algorithm TWS
When you reset, the headphones go into active search mode, the indicators should start flashing white quickly, at which point they are looking for each other, take your time to turn on Bluetooth on your phone - give the gadgets 5-10 seconds to establish internal communication.
Correct reconjugation
A key thing that's often overlooked is the sequence of actions after the reset, and when you've done Hard Reset, the headphones must first find each other, and then become visible to the smartphone, and if you hurry, the phone will see two independent devices.
Take both of your headphones out of the case at the same time. Wait until they stop blinking or start blinking slowly (standby mode). Only then open the Bluetooth settings on your phone and look for a new device. There should only be one item on the list with the name of your model.
If you see two devices with the same name (e.g., "Mi True Wireless EBs Basic R" and "..L"), then the sync has not occurred.
- Remove (forget) both devices in the phone settings.
- Turn off Bluetooth on your smartphone.
- Put the headphones in the case, close the lid.
- Repeat the resetting procedure.
Why does the phone see two devices?
Table of reset codes for popular models
Different Xiaomi and Redmi product lines use different combinations to enter reset mode. Below is a summary table for the most common models. If your model is not on the list, try the universal long-clamp method.
| Model headphones | Action for discharge | Indication of success |
|---|---|---|
| Redmi AirDots / Earbuds Basic | 5 quick presses or 15 seconds clamping | Triple red flashing |
| Mi True Wireless Earphones 2 / 2 Basic | Hold the sensors down for 20 seconds. | The indicator goes out and lights up. |
| Xiaomi FlipBuds Pro | Case button (10 seconds) | Orange flashing on the case |
| Redmi Buds 3 / 3 Pro | Hold the sensors down for 10-15 seconds. | White flash 3 times |
Note that models with a button on the case (like FlipBuds or Buds 3 Pro) often do not need to get headphones out. Just put them in the case, open the lid and press the function button on the case until the color of the indicator changes.
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A successful reset is always confirmed by a change in the color or rhythm of the flashing indicators. If there is no reaction, check the charge of the case.
Compatibility and Update Issues
Sometimes the cause of failures is not hardware, but software conflicts. Updating the smartphone operating system (Android 13, 14) can change the algorithms of the Bluetooth stack, in which case old firmware headphones can work unstable.
To solve this problem, manufacturers release firmware updates. Check for updates through the official Xiaomi Earbuds or Mi Wear app. Connect your headphones to your phone, launch the app and find the "Software Update" section.
Also worth checking is the developer's Android settings. The hidden menu (call by tapping 7 times on the build number in About Phone) has Bluetooth options. Make sure you don't activate experimental codecs that your headphone model doesn't support. Resetting Bluetooth settings in this menu can help, but will require re-entering passwords for all devices.
⚠️ Warning: When updating the headphone firmware, make sure that the case is at least 50% charged and the headphones are inside.
Can I connect Xiaomi headphones to the iPhone?
When repairs or replacements are required
If none of the software methods worked, it's probably a physical problem, and a Bluetooth module failure in one of the headphones is a common cause, especially if the device falls or falls into a wet environment, in which case one earphone simply can't transmit a signal to the other.
Signs of hardware breakdown:
- 🔥 The headphone is very warm when trying to connect.
- 🔇 Complete lack of response to touch with a charged battery.
- 💥 Bloating of the battery inside the headphone case.
In such cases, self-repair is difficult because of the monolithic design and use of glue in the assembly. You can't replace one headphone with a new one from the other pair without flashing the chips on the factory equipment, you need to go to an authorized service center or buy a new kit.
Remember that the warranty often does not cover damage related to moisture, even if IPX4 protection is claimed. Careful handling and regular cleaning of contacts is the best prevention of connection problems.