The situation when the loved ones TWS-Headphones suddenly stop seeing a smartphone or refuse to terminate the connection, familiar to many owners of the Xiaomi ecosystem, and this can happen at the most inopportune moment: during a jog, in a crowded subway or before an important hangout. Users often panic, believing that the device has failed, however, in most cases the problem lies in a software failure or incorrect order of actions when pairing.
The tricky part of the diagnosis is that Mi True Wireless Earbuds Basic 2, Redmi Buds 3 Pro or older AirDots can behave differently depending on the version of MIUI or HyperOS on your phone. Sometimes it's the smartphone that has accumulated errors in the cache of the Bluetooth module, and sometimes it's the case that has been discharged, which is not able to activate the search mode. In this article, we will discuss all possible causes and offer step-by-step solutions.
The first thing you should do is take your time back to the service center, and 90 percent of the time, the solution is to reboot the Bluetooth module completely, or reset the headphones to the factory settings, and let's look at a process that can bring sound back into your life without cost.
Main causes of coupling failure
Before we get into action, we need to understand the nature of the conflict between devices, and most often, Bluetooth connectivity is broken or not installed because of the banal overflow of the list of previously connected gadgets in the memory of headphones, they can try to automatically connect to another phone that was nearby before, negating your current request.
Another common cause is low battery power: When the power level in the case or the headphones themselves drops below a critical point, the device goes into power saving mode and stops broadcasting the detection signal, and software bugs of the Android operating system itself cannot be discounted, especially after recent updates.
⚠️ Warning: If the headphones were in extreme cold or, conversely, in direct sunlight, the lithium-ion battery may temporarily lose its ability to give current.
Sometimes the problem is physical contamination of contact areas. Oxidation or a layer of skin fat can prevent the headphones from charging inside the case, which leaves them off even if the indicators show otherwise.
Basic inspection and preparation of devices
Begin troubleshooting always with simple steps that are often overlooked.Make sure your smartphone is on GPS-In modern versions of Android, active geolocation is a requirement for Bluetooth Low Energy, which is used to detect new devices.
Also check if the phone is activated in flight or power saving mode, which can limit the background operation of wireless interfaces. Try temporarily turning off the energy savings and restart the smartphone. This action clears RAM and restarts the system services responsible for communication.
- 📱 Make sure that Bluetooth on your phone is on and visible to other devices.
- 🔋 Charge your case and headphones to 100% before setting up.
- 📡 Turn off Bluetooth on all other devices within a 10-meter radius.
- 🧹 Clear the list of associated devices in the phone settings.
If you use third-party audio management apps like Equalizer FX or various bass amplifiers, try temporarily disabling them.They can intercept the audio stream and block the standard process of connecting to the headset.
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When looking for new devices, keep your headphones as close to your smartphone as possible (no more than 30 cm), which minimizes the impact of interference from Wi-Fi routers and microwave ovens.
Complete reset of headphones (Hard Reset)
If simple methods don’t work, you need to perform Hard Reset.This action will return Xiaomi headphones to factory settings by removing all stored pairing profiles. It is important to perform this procedure strictly according to the instructions, as a violation of timings can lead to the fact that the headphones will enter diagnostic mode.
The way you dump it depends on the model. TWS-Models like Redmi Buds 3 or Mi True Wireless Earbuds 2, you need to place both headphones in the case and leave the lid open. Find the function button on the case case case (usually hidden or on the edge) and hold it for 10-15 seconds.
The indicator must flash a certain color (often white or orange) several times, signaling a successful reset.For models without a physical button, such as the old AirDots, the procedure is performed through touch panels: you need to pinch the sensors on both headphones simultaneously for 20 seconds until they blink.
☑️ Reset algorithm TWS
Once the reset is successful, the headphones will go into pairing mode automatically, the indicators will flash quickly, signaling readiness for connection, and now you can search for them in the list of available devices on your smartphone.
Profile removal and re-pairing
The critical step is to properly clean up the connection history, and many users simply turn off Bluetooth thinking that is enough, but the phone's memory is left with a "ghost" profile with configuration errors that interferes with the new connection.
Go to your smartphone's Bluetooth settings. Find the Xiaomi headphone model on your device list. Click on the gear icon or the "i" next to the name and select "Forget the device" or "Unpair the pairing." Repeat this for all the copies of the headphones if there are more than one.
| Action. | Status of indicator | The result |
|---|---|---|
| Single tap | No reaction. | Managing music |
| Double-push | Flushing | Answering the challenge |
| Clutch 5 seconds | Voice assistant | Activation of Siri/Google |
| Clutch 15 seconds | Long blinking | Resetting settings |
After deleting your profile, turn off Bluetooth on your phone, wait 5 seconds and turn it on again. Start searching for new devices. If the headphones aren't immediately there, put them back in the case, close the lid, wait 10 seconds and open again - this will force the search module to restart.
What if the phone only sees one headphone?
Bluetooth settings in Android and MIUI
The MIUI and HyperOS shells have their own Bluetooth protocols. Sometimes the system aggressively optimizes background processes by "killing" the Bluetooth service. Check the battery settings for Bluetooth system services and make sure they are allowed to work in the background without restrictions.
Also worth paying attention to is the Bluetooth codec version. If you're trying to connect your old headphones to a new flagship, codec conflicts can arise (e.g., trying to use aptX HD where only SBC is supported). Try changing the Bluetooth Audio Codec settings to SBC or AAC in the Developer Menu.
In some cases, clearing the Bluetooth cache helps. Go to Settings → Applications → All applications, find the “Bluetooth” list (you may need to turn on system processes display) and click “Clear Cache” and “Clear Data”.
⚠️ Attention: Clearing the Bluetooth system application data will not delete your personal files, but will reset all the settings of the connected devices.
If you have Xiaomi Wear or Mi Fit installed, try updating these apps through Google Play or the App Store. An outdated version of the plugin may not properly handle the protocols of new headphone models.
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Changing the audio codec in the developer menu often solves the problem of intermittent sound or the inability to connect on smartphones with Android 12 and above.
Hardware malfunctions and diagnostics
When software methods are exhausted, it is worth considering the possibility of hardware failure. If none of the headphones respond to charging (the indicators in the case do not light up when installed), the charge controller may have failed or the batteries themselves are deeply discharged and require a “push” of current.
Check the charging cable and the power supply. Xiaomi headphones are sensitive to current. Using powerful fast charging units (65W, 120W) sometimes triggers a controller defense response and charging doesn't go. Try charging the case from the computer's USB port or old power supply to the 5V/1A.
- 🔌 Check the cable for faults and insulation damage.
- ⚡ Use a different power source (USB-port of the PC or Power Bank).
- 🧐 Inspect the contact pins inside the case for trapping.
If one earphone is running and the other is silent even after resetting and charging for a long time, there is likely a problem with its internal battery or speaker, in which case software recovery is impossible.