When your favorite wireless headphones suddenly stop connecting to your smartphone, it always comes as a surprise, especially if you need to answer your phone or turn on music on the way. Xiaomi ecosystem users often face various failures in the work of Bluetooth modules, whether it is a budget Redmi Buds or flagship Mi True Wireless. Most often the problem lies not in hardware failure, but in software conflict or battery discharge.
Before you bring a device to a service center, you need to do a series of diagnostics that bring it back to life in 90% of cases. An unstable connection can be caused by a residual charge in the device buffer or a crowded pairing memory. In this article, we will discuss step-by-step algorithms that will help you fix the problem yourself.
Modern. TWS-Headsets are complex microcomputers that require proper handling. If your Xiaomi headphones have stopped seeing the phone or are displayed as "unavailable," don't panic. Software failure is temporary and usually easily fixed. Let’s discuss the main causes and methods of their elimination, starting with the simplest actions.
Basic diagnostics and charge check
The first thing to do is to rule out trivial reasons for failure. Often users forget that the case and the headphones themselves have independent power supplies. If the charge indicator doesn't light up when you remove it from the case, both devices may be discharged. Make sure the contacts in the case are clean and not oxidized.
Check if your smartphone is on Bluetooth and in flight mode. Sometimes a MIUI or HyperOS system can hang in search mode without giving out available devices. Try turning off and re-enable wireless networks through the control panel.
⚠️ Warning: If the indicator on the case flashes red or does not respond to the charger connection, the problem may be in the cable or power supply.
It's also worth checking if your headphones are connected to another device nearby.Priority is often given to the last active gadget.If a friend's phone or tablet is in range, the headset may try to connect to them while ignoring your smartphone.
💡
Try connecting your headphones to another smartphone. If they work there, the problem lies in your main phone's Bluetooth settings, not the headphones themselves.
Complete Reset (Hard Reset)
The most effective way to solve connectivity problems is to completely reset the headphones to factory state.This procedure removes all stored pairing profiles and clears the module's internal memory. The algorithm may differ slightly between Xiaomi and Redmi models, but the general principle is the same.
You usually need to place both earbuds in the case and leave the lid open. Then find the function button on the case case case (often hidden or combined with an indicator). Press and hold it for 10-15 seconds until the indicator flashes white at high frequency.
☑️ Algorithm of resetting headphones
Once the lights go out or change blink mode, the device is ready for a new one. It's important to delete the old Bluetooth profile on the phone before reconnecting. Find your model name in the list of previously used devices and click Forget the device or Unpair.
⚠️ Warning: During the reset procedure, do not close the case cover or remove the headphones until the indicator stops flashing.
If your model doesn't have a physical button, reset is often done by long-term touching of the touch zones on the headphones themselves while they're in the case.The exact combination for your Mi True Wireless Earbuds model is better specified in the official specification, as touch controls vary.
Bluetooth settings in MIUI and HyperOS
Xiaomi’s shells have their own add-ons over standard Android that can affect peripheral performance. In some versions, battery optimization aggressively limits background Bluetooth service processes, considering them energy-intensive, leading the system to “forget” to connect the headset automatically.
To fix this, go to your phone's settings and find the Applications → All Apps section. In the list, find Bluetooth or Bluetooth MIDI Service. Go to Battery and select No Limits mode, which will allow the system to maintain a permanent connection.
Also worth checking your visibility settings. Make sure your phone is not hidden to other devices, although it is rarely critical to connect, and it is more important to check whether Do Not Disturb mode or special audio profiles are enabled that can block audio output to external devices.
Another hidden setting is the Bluetooth encoder. In the Developer Menu (which you need to activate with a multiple tap on the build number), you can find the Bluetooth Audio Codec parameter. Try switching it from AAC or aptX to a standard SBC, which will reduce the sound quality, but increase the stability of the connection.
Working with the Xiaomi Earbuds app
For deep diagnostics and updates of the headphone firmware, Xiaomi has developed a special application Xiaomi Earbuds (formerly known as Mi Buds) that allows you to see the real charge of each headphone, check the firmware version and perform a reset with software.
If the headphones don't automatically connect, try to find them manually through this app. Sometimes the firmware update solves compatibility issues with new versions of Android. The app will tell you if a new version of the software is available for your Redmi Buds model.
| Model headphones | Case indicator | Action for discharge | Retention time |
|---|---|---|---|
| Redmi Buds 3 / 4 | White flashing | The button on the case | 10-15 sec. |
| Mi True Wireless 2 | Red flashing | Touching the sensor (5 times) | 5 touches |
| AirDots / Redmi AirDots | Red + White | The button on the case | Up to 30 seconds. |
| FlipBuds Pro | Orange blinking | The button on the case | 10 seconds. |
The app also has a headphone search feature that helps you determine if one of them has lost touch with the other (desynchronization of the stereo pair). If the left and right headphones work independently, the application will help you restore their connection to a single stereo system.
What to do if the app does not see the headphones?
Elimination of interference and interference
Bluetooth operates in the 2.4 GHz band, which is heavily congested in today's environment. Wi-Fi routers, microwaves, wireless mice, and even USB 3.0 ports can cause electromagnetic interference. If the connection occurs but the sound is interrupted or stuttered, the reason is likely to be that.
Try to move away from the source of potential interference, such as a running router, and check if the phone is wearing a thick case with metallic intersperses or a magnetic cover, and the metal shields the signal, drastically reducing the range and stability of communication.
In rare cases, cleaning the list of paired devices helps. If there are 10-15 different gadgets stored in the phone's memory, the module may not work properly. Remove old, unused devices from the Bluetooth list to free up memory resources.
⚠️ Warning: Do not store headphones near powerful magnetic field sources, such as speakers or transformers. This can lead not only to connection failures, but also to demagnetization of speakers.
If you're in a place with a huge crowd (metro, concert, stadium), the airwaves can be so jammed with signals from other devices that stable operation becomes impossible, and in such situations, the only solution is to wait for a change of location or use a wired headset if the model supports this mode.
Hardware malfunctions and service
When software methods are exhausted, we suspect hardware. TWS-If the headset is a failure of one of the headphones or contacts in the case. If the indicator on the case lights up, but the headphones in the list of devices do not appear and do not respond to touch, perhaps the internal headphone battery is down.
Try leaving your headphones in a case for a few hours, even if the indicator shows a full charge. Sometimes the power controller needs to "rock" If after a long charge and reset the device is still not visible to the phone, there is a probability of hardware failure.
💡
If none of the software methods worked, and the headphones are not visible on any device, the Bluetooth module or battery is likely to have failed.
Also worth checking is the speaker grid and charging contacts. Sulfur, dust and moisture are the main enemies of electronics. Carefully clean the contacts with a dry soft cloth or cotton swab dipped in alcohol (after pressing it out), do not use metal objects to avoid closing contacts.