Modern users often face the need to use a wireless headset not only to listen to music alone, but also to share videos or games with a friend. However, when two Xiaomi headphones are removed from the charging case, they do not always automatically sync with each other or with the phone.
The problem often lies in the nuances of True Wireless Stereo, where one channel is the lead and the other is the follower. In some budget models, such as Redmi Buds or older versions of Mi True Wireless Earphones, the process of primary pairing requires manual intervention. If you see only one speaker in the Bluetooth list or the sound is only on one side, then the system has not moved to stereo mode.
In this article, we will discuss in detail the algorithms for forcing both channels to activate, we will look at both standard methods for turning on via case, and ways to reset settings to restore the normal functioning of the pair. Understanding the principles of Bluetooth protocols will help you avoid common errors when connecting.
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Before setting up, make sure that both the headphone and the charger case have a battery charge of at least 50% to avoid shutting down during a critical time of synchronization.
TWS and Primary Activation
True Wireless technology involves the absence of physical wires not only between the headset and the smartphone, but also between the headphones themselves. Inside the compact case of each device, there is a Bluetooth module and a microcontroller. The first extraction from the case, they must find each other faster than the phone to create a single stereo system.
And what you usually do is you open the charger lid, and the lights start flashing, and at that point, you exchange the power data between the left and right channels, and if you take them out at the same time, you have a 95% chance of synchronizing successfully, but if you do that with a delay, one device may already be looking for the phone, ignoring the neighbor.
It's important to understand that the lead headphone (often on the right) takes over the task of connecting to the sound source and then broadcasting the signal to the second one. In newer models with Qualcomm or Realtek chips, this process happens almost instantly thanks to Multipoint technology or improved data protocols.
- 🎧 Simultaneous extraction from the case guarantees priority connection between the ears.
- 📶 The master device always connects to the phone first, creating a bridge for the second.
- ⚡ Blinking often indicates a couple’s search status or a willingness to pair.
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The key to success is to remove both headphones from the case almost simultaneously, giving them time to find each other before connecting to a smartphone.
Algorithm of inclusion of both headphones through the case
The most reliable way to get both speakers to work is to perform the correct sequence of actions with the charging case. Many users mistakenly believe that it is enough to just press a button on the case, but in the case of desynchronization, a full cycle of rebooting modules is required.
First, place both headphones in the charge case and close the lid. Wait 5-10 seconds for the devices to go into charging mode and completely disconnect from active processes. Then open the lid, but do not remove the headset immediately. On some models, such as Mi AirDots, you need to press and hold the function button on the case case case case for 15-20 seconds before changing the color of the indicator.
After resetting the indicators, remove both headphones at the same time. They should start blinking quickly, signaling the transition to pair-search mode. Only after the blinking becomes slow or stops on one of them (meaning connection between each other), you can search for the device in the phone settings.
☑️ Checking synchronization readiness
If only one device is still displayed in the Bluetooth list after these manipulations (e.g. Mi True Wireless) EB20_L), So the stereo is not ready, so you have to ignore the device you found and go to the hard reset procedure described below.
Forced synchronization of stereo pairs
When a phone sees two identical devices or only one, it suggests that the headphones are mono-mode or have lost communication with each other. To enable two Xiaomi wireless headphones as a single system, manual intervention through touch panels is often required.
There is a "button dance" technique that is effective for most models without a physical button on the case. Take both headphones out of the case. If they're on or blinking, press and hold the touch zones on both devices simultaneously for 5-7 seconds until they turn off. Then press and hold the sensors again for about 20-30 seconds. The headphones should blink several times, turn off and re-enter pairing mode.
⚠️ Warning: During long-term sensor clamping, keep your fingers on even if the headphones vibrate or sound.The process of resetting internal memory often occurs only at the end of the retention cycle.
Once the devices reboot and flash quickly, delete the old entries about them in your smartphone's Bluetooth menu. Find a new device and connect. Now the sound should be distributed to both channels.
| Symptoms. | Probable cause | Decision |
|---|---|---|
| The sound is in one ear only. | Loss of communication between L and R | Perform reset and reconnect |
| Bluetooth has two devices | Headphones are not synchronized | Remove both, make a case reset |
| No sound, but the connection is there. | Failure of the audio codec | Reconnect Bluetooth |
Use the Mi Earbuds app to customize
For owners of smartphones based on Android and MIUI, a great tool for monitoring is the Mi Earbuds (or Xiaomi Earbuds) app, which allows you not only to track the charge, but also to control the modes of operation, including the inclusion of the second headphone if it was disabled software.
Once you've connected the headset, open the app. The main menu often displays the status of each headphone separately. If one of them is marked "Not Connected" or has a gray icon, try clicking on it to activate. The app may suggest updating the firmware, which often solves problems with unstable connection between channels.
You can also find "Use Mode" in the app settings, where you can switch from Stereo to Mono and back again, and forced mono-mode switching and stereo return sometimes shakes the system and makes both devices work properly.
In addition, the app has a touch setting, so if the sensor on one of the headphones is locked or incorrectly configured, it may not respond to the on commands, and check if the left and right controls are activated.
Secrets of the Mi Earbuds app
Resolving Connection and Interference Problems
Sometimes technical malfunctions are absent, but the external environment prevents the two Xiaomi headphones from turning on. The Bluetooth radio signal runs at 2.4 GHz, which is heavily congested in crowded places. Signals from Wi-Fi routers, microwave ovens and other gadgets can create a "porridge" in which headphones can not find each other.