Xiaomi AirDots 2 wireless headphones (also known as Redmi AirDots 2) remain among the most popular TWS-But many users are faced with a common problem: after buying or resetting the settings, the headphones stop automatically connecting to each other, and only one of them is sounding. In this article, we will analyze all ways to synchronize AirDots 2 with each other, including forced reset, manual connection and fault diagnosis.
It's important to understand that the problem isn't always with the headphones themselves, and it's often the smartphone settings, Bluetooth profile conflicts, or even mechanical damage to contacts in the case, that's why we're going to go through every scenario in detail, from basic synchronization to restoring work after a firmware update.
Why AirDots 2 doesn’t connect to each other: The main reasons
Before you start setting up, it is worth eliminating the typical causes of the break in the connection between the headphones:
- 🔋 A discharged battery in one of the headphones or case (even at 10% charge, synchronization may not work).
- 📱 Bluetooth profile conflict on a smartphone (for example, if the headphones previously connected to another device).
- 🔄 Firmware failure after automatic update (especially relevant for early versions of AirDots 2).
- 🛠️ Mechanical damage to contacts in the case or on the headphones themselves (oxidation, pollution).
- 🎧 Incorrect switching sequence (for example, first the right earpiece, then the left earpiece).
According to service center statistics, 60 percent of the time, the problem is solved by simply resetting the headphones, another 25 percent is software conflicts on the smartphone side, and only 15 percent are hardware malfunctions that require repair.
⚠️ Note: If the headphones have previously fallen from a height or been exposed to moisture, the sync may be disrupted due to damage to the Bluetooth antenna.
Preparing for synchronization: what to do before the connection
Before you connect AirDots 2 to each other, follow the necessary preparatory steps:
- Charge headphones and case. Make sure the indicator on the case is white (charge > 50%). If the indicator is red or flashing, connect the case to charge for 30 minutes.
- Remove old connections. On your smartphone, go to Settings → Bluetooth, find AirDots 2 in the list of devices and forget them (click on the basket icon or "Forget this device").
- Contact checks, take the headphones out of the case and inspect the metal contacts on the back, and if there is oxidation or dirt, gently wipe them with a cotton swab dipped in alcohol.
If you are using AirDots 2 with an iOS device, pre-disable Automatic Sound Switching in Bluetooth settings. On Android, check that power saving mode does not limit Bluetooth.
Method 1: Standard case synchronization (for new headphones)
If you’ve just bought Xiaomi AirDots 2 or reset them to factory settings, use this method:
- Put both headphones in the case and close the lid for 10 seconds.
- Open the case cover. The indicator on the front panel should start flashing white (search mode).
- On your smartphone, turn on Bluetooth and find a device called Redmi in the list. AirDots_2_R (right earphone. Connect to it.
- Through 5–10 left earphone (Redmi) AirDots_2_L) It will automatically connect to the right and the sound will go both ways.
If you only have one earpiece on the phone, take both of them out of the case and put them back for 15 seconds, and then try again, and 90 percent of the time, that solves the problem.
☑️ Preparation for synchronization
Method 2: Forced resetting (if the headphones are not synchronized)
If the standard method didn't work, do a hard reset of the headphones, which will bring them back to the factory settings and make them re-synchronize.
Instructions for AirDots 2:
- Get both earphones out of the case.
- Press the touch buttons on both headphones simultaneously for 15 seconds. The indicators should flash red first, then white.
- Put the headphones back in the case and close the lid for 10 seconds.
- Open the lid – the indicator on the case should flash white (search mode).
- Connect to the right earpiece (Redmi). AirDots_2_R) via Bluetooth on a smartphone.
After resetting, the headphones may require resetting in the Mi Home app (if you’ve used it before), and make sure that the Bluetooth settings on your smartphone include Dual-Channel Sound or Stereo.
⚠️ Warning: Some AirDots 2 firmware may not reset the first time.If the indicators don't flash white after 15 seconds of holding, repeat the procedure by pre-discharging the headphones to 0% and fully charging them.
What to do if the reset does not work?
Method 3: Manual connection via Mi Home app
If the headphones connect to the phone but don’t connect, try using the official Mi Home app (available for Android and iOS).
Step-by-step:
- Install the Mi Home app from Google Play or the App Store.
- Sign up or sign in to your Xiaomi account.
- Click Add Device (+) → Select Audio → Redmi AirDots 2.
- Follow the instructions on the screen. The app will automatically find both headphones and prompt them to sync.
Mi Home also allows you to update your headphone firmware if a new version is available.The update can fix sync errors, but don't interrupt the process, otherwise the headphones may fail.
| Problem. | Possible cause | Decision |
|---|---|---|
| Headphones are not defined by the phone | Discharged, discharge not performed | Charge, reset (mode 2) |
| The sound is only in one headphone. | Not synchronized with each other | Reconnect via case |
| The indicator flashes red. | Low charge or error | Charge, reset settings |
| The headphones are connected, but immediately switch off. | Bluetooth profile conflict | Remove the device from the phone memory |
Diagnostics of hardware faults
If none of these things worked, the problem could be hardware.
- 🔌 Contacts in the case. Examine the metal connectors inside the case for oxidation or contamination.
- 🎛️ Microphone and speakers. Blow into the microphone holes -- sometimes dust blocks the sensors.
- 🔋 Battery: If the headphones run out in 10 to 15 minutes, the battery could have failed.
- 📡 Bluetooth antenna. When you fall, the antenna can move away from the board, which requires soldering in the service.
To check if you're working, connect your headphones to another device (like a laptop), if the problem persists, it's a malfunction in the AirDots 2 itself. If it's working normally on another device, the problem is with your smartphone settings.
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If the headphones started to sync poorly after updating the firmware of the smartphone, try rolling back the Bluetooth stack version through the developer settings (Settings → About phone → Assembly number – tap 7 times to activate).
Frequent User Mistakes and How to Avoid Them
Many of the problems with AirDots 2 are caused by users' missteps, and here are the most common mistakes:
- 🚫 Connect to the left earpiece. Always connect to Redmi first. AirDots_2_R (right, because he is the leader of the.
- 🔄 If you release the buttons before 15 seconds, the reset will not be performed.
- 📵 Using a non-original charger, which can damage the power controller.
- 🌡️ Operating at extreme temperatures. Below -10°C or higher +40°C can disrupt the Bluetooth module.
Critical error: never update your headphone firmware through third-party apps (like the TWS Toolbox) and this can cause your device to “brick” and then stop turning on.
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If your headphones don't sync after falling or getting moisture, don't try to disassemble them yourself, which causes a permanent failure in 80 percent of cases.