Modern users often face the situation when you need to split the audio stream into two devices or just restore the normal operation of the headset after a failure. Xiaomi Airdots 2 (also known as Redmi Earbuds Basic) is one of the most popular on the market, but it has its own features of synchronization. Unlike older models with support for aptX Adaptive, it uses the classic Bluetooth 5.0 protocol with Master-Slave sound transmission, which requires a special approach when setting up.
The challenge that owners face is that the right and left earbuds must be combined first, and then the bundle connects to the smartphone. If you see two devices with the same name on the Bluetooth list, or the sound comes from only one ear, then the TWS (True Wireless Stereo) mode is not activated. Let's figure out how to fix this situation and make the gadgets work as a whole.
The principle of operation of TWS technology and master device
To understand the setup process, you need to know exactly how the signal is transmitted in this model. In Xiaomi Airdots 2, one device acts as the master, taking the signal from the phone, and the second (Slave) receives the data from the first. Usually the right earpiece becomes the main one, but under certain conditions, the roles can change, which sometimes leads to desynchronization.
It's this architecture that dictates the strict sequence of actions at initial pairing. If you break the order of on or don't clear the connection history in the headset's memory, smartphones can try to connect to each ear separately, in which case the stereo effect is lost, and you hear either only the left channel or mono sound from one source.
⚠️ Warning: Trying to connect headphones to your phone before they sync with each other often results in a lock mode TWS. Always wait for the flashing of indicators in a pair first.
It is important to consider that the range of communication between the headphones themselves is much smaller than the range of a Bluetooth smartphone, so during the configuration phase of Master-Slave devices should be in close proximity to each other, ideally in a charging case or lying next to the table.
Preparation for pairing: resetting and cleaning memory
Before you try to create a new pair, you need to completely clear your connection history. This is a critical step that is often ignored when trying to solve the problem by reconnecting. Go to your smartphone's Bluetooth settings, search the Xiaomi Earbuds Basic list, and select the "Forget device" or "Disable" option.
Next, you should completely reset the headphones themselves. To do this, place both devices in the charging case and make sure they start charging (red lights will light up). Then, without removing them from the case, press and hold the touch zones on both earphones simultaneously for 20 seconds. The indicators should flash red several times, which signals a reset.
☑️ Checklist before setting up
Once you reset, take the gadgets out of the case. They have to automatically turn on. The right sequence is crucial. First, remove the right earpiece and wait a few seconds until it flashes white quickly, meaning search mode. Only then take out the left.
If it goes well, one of the indicators (usually on the right) should go out or start blinking very slowly (once every few seconds), while the other will continue to blink quickly.
Step-by-step instruction for connecting two devices
Now that the headphones are synchronized, we're going to connect to the sound source. Turn on Bluetooth on your smartphone or tablet and start scanning for new devices. There should only be one device on the list of available gadgets called Xiaomi Earbuds Basic or Airdots 2.
Click on the name of the pairing device if the system requests confirmation or PIN-If you have a code, type 0000, you will have a signature audio signal in your headphones and a change in status in your phone menu to Connected.
There is a nuance when connecting to Android TVs or computers. Some older Bluetooth adapters may not correctly identify the A2DP profile when dual-connected, and in such cases, you may need to manually switch the audio output profile in the operating system settings after successful pairing.
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If the phone sees two devices with the same name, don't connect to either of them.Repeat the reset procedure, making sure the headphones are in the case tightly and in contact with the charging pins.
Solving the problem of desynchronization of the left and right channel
One earbud is working and the other is silent, and this is the most common complaint of users, often after the headphones have been in different places or connected to different phones without first resetting. The left channel "thinks" that it should work independently, and loses touch with the master device.
To remedy this situation, there is a forced method of flashing the link: put both earphones in the case. Take them out at the same time. Quickly press 5 times on the touchpad of each earphone. If you hear a beep or see a specific flash of indicators (often they flash in synchronous red and white), then the flashing mode is activated.
| Symptoms. | Probable cause | Method of decision |
|---|---|---|
| The sound is in one ear only. | Loss of TWS communication between headphones | Full reset (20 seconds) and re-coupling |
| There are two devices on the list. | Headphones are not paired with each other | Remove both from Bluetooth, reset, reconnect |
| Low volume. | Unsynchronized volume of phone and headset | Turn the volume down on the phone to a minimum and add |
| Intermittent sound | Interference or battery discharge | Charge the case, move away from the Wi-Fi router |
It's also worth checking the battery power. If one device is discharged more than the other, it can automatically shut down, tearing the stereo pair. Make sure that both headphones charge in the case: the indicators should burn red when installed in the sockets.
Use the Mi Earbuds Basic app to customize
For more fine-tuning and monitoring the battery condition, the official Mi Earbuds Basic app (or Xiaomi Earbuds) is recommended, which allows you not only to see the exact percentage of charge of each headphone separately, but also reassign the actions of the touch control.
Once you connect the headset to your phone, launch the app, it will automatically find your Airdots 2. In the interface, you can see which device is the master, and if necessary, switch control, which is especially useful if the right earphone starts to discharge faster than the left.