Why Xiaomi AirDots 2: 12 Reasons and How to Fix It

You took Xiaomi AirDots 2 headphones out of the case, turned on your favorite playlist, and suddenly you found that the sound came from only one headphone: the right or left side is silent, flashing red, does not connect to the phone or just disconnects after 5 seconds. A familiar situation? This problem occurs in one in five owners of Xiaomi wireless headphones, but in 90% of cases it can be solved independently without contacting the service.

In this article, we’ll look at all the possible reasons why one AirDots 2 headphone doesn’t work, from the banal discharge of the battery to hidden hardware defects. You’ll learn how to diagnose a problem by indicators, which Bluetooth settings to check first, and when it’s really time to carry the headphones for repair. And we’ve collected unique earphone reset life hacks that aren’t described in the official Xiaomi manual.

Don't throw your headphones away or buy new ones! Follow our recommendations in order and you'll have an 85 percent chance of getting your stereo back in 10 to 15 minutes.

1. Checking the underlying causes: battery, connection, physical damage

Start with the obvious: Most of the time, one Xiaomi AirDots 2 earphone stops working because of trivial problems that can be solved in a few minutes.

• 🔋 Battery discharge: Take both headphones out of the case and look at the indicators. If one doesn't flash white/red, it's discharged. Check if it's charging in the case (the indicator should burn red).
• 🔌 Case contacts: Clean the metal contacts on the headphones and inside the case with a cotton swab soaked in alcohol. Oxidation or dirt can block charging.
• 🎧 Physical damage: Examine the speaker for mechanical defects (dents, cracks). Try to gently blow the hole for sound - sometimes the cause is clogged dust.
• 📱 Connect to your device: Make sure that both headphones are displayed in your smartphone’s Bluetooth settings (there must be two icons: Mi True Wireless EB2L and EB2R).

If the headphone is not charging in the case, try connecting the case to another cable or power source. Sometimes the problem lies in a faulty USB- case port. Also check if the recharge protection has worked - leave the case on the charge on the 30 for minutes, even if the indicator does not burn.

Critical: If the earphone doesn't respond to the press of a button (it doesn't blink, it doesn't make sounds), but it does charge, it's probably the firmware that's lost, and you can see more about this in the reset and flash section.

2. Resetting headphones to factory settings

If the basic check didn't work, the next step is to completely reset your headphones, which will delete all the saved connections and return the settings to the factory. The procedure is different from Xiaomi's standard instruction, so follow the algorithm carefully:

1. Put both headphones in the case and close the lid.
2. Remove them at the same time and hold the buttons on both headphones for 15 seconds (until the indicators start flashing red and white alternately).
3. Release the buttons and wait until the headphones turn off (the indicators go out).
4. Turn them on again with a long press (3 seconds) and they are now ready for the new synchronization.

After discharge:

• 📱 Remove the headphones from the list of Bluetooth devices on your phone.
• 🔄 Reboot your smartphone (this will clear the Bluetooth cache).
• 🎧 Reconnect the headphones: first, the right (EB2R) must be connected, then the left (EB2L) automatically.

Importantly, if the left earphone doesn't connect to the right one after the reset, the problem may be a damaged synchronization chip, in which case only repairs will help.

3. Bluetooth problems: phone settings and interference

Often it is not the earbud itself that is to blame, but incorrect Bluetooth settings on the smartphone or external interference.

• 📵 Flight mode: Make sure it's off-line, otherwise Bluetooth may not work.
• 🔄 Auto Connect: In Bluetooth settings, find AirDots 2 and enable the Auto Connection option (on Android this may be called Priority Device).
• 📶 Interference: Disable other Bluetooth devices (fitness bracelets, speakers, smartwatches) and 2.4GHz Wi-Fi routers or microwave ovens can also interfere.
• 🔧 Sound Codecs: On Android, go to Settings → Bluetooth → Sound settings and select the SBC codec instead of AAC or aptX. The latter can cause delays and communication interruptions.

If you have an iPhone, try turning off Automatic Sound Switching in Bluetooth settings. On Android 12+, check if Bluetooth Low Power Mode is enabled (Settings → Battery → Power Saving Mode).

Hidden reason: Some Xiaomi/Redmi smartphones have a power-saving bug that forcibly shuts off Bluetooth in the background.

1. Go to Settings → Battery → Energy Saving Mode.
2. Select “No Limits” for the Bluetooth app.
3. Turn off the option of MIUI Optimization (if any).

4. Hardware malfunctions: what breaks most often

If the software methods didn’t work, the problem could be the hardware, and here are the typical Xiaomi AirDots 2 hardware breakdowns and their signs:

• 🔊 Speaker damaged: There's sound, but it's wheezing, distorting, or very quiet, often after a fall or moisture hit.
• 🔋 Bloated battery: The headphone is not holding a charge, discharges quickly or does not turn on. Visually, there can be noticeable bloating of the body.
• 📡 Faulty Bluetooth antenna: The earphone only connects up to 10cm from the phone or permanently loses communication.
• 🔌 Oxidized contacts: The earpiece doesn't charge in the case, although the case itself charges from the cable. Check the contacts with a magnifying glass -- they should shine.

The most common failure is a wire break between the battery and the board, and it's because of the frequent inflection of the earphone from the case.

• The headphone is turned on, but after 1-2 seconds it turns off.
• The indicator flashes red, but there is no connection.
• Charging is only in a certain position (you need to "press" the headphone in the case).

Can you fix it yourself? Yes, but only if you have experience soldering SMD- components.

• Salting station with a temperature of up to 300 ° C.
• Solder and flux for chips.
• Spare parts (battery 3.7V 40mAh, speaker 6 mm).

⚠️ Warning: If you've never soldered chips, you better not take risks, you can finally burn the board. In the service, it costs 500-800 rubles to replace the battery, dynamics - 300-500 rubles.

5. firmware updates and hidden bugs

Xiaomi periodically releases firmware updates for AirDots 2 that fix bugs with communication and sound. If your headphones are released before 2021, chances are they have outdated firmware. Here's how to update:

1. Download the official Mi Home app (available for Android and iOS).
2. Connect the headphones to the phone via Bluetooth.
3. Open Mi Home, go to the section “Profile → Settings → Firmware Update”.
4. If an update is available, follow the on-screen instructions (don’t turn off the headphones during the process!).

Hidden firmware bugs that can cause problems with one earpiece:

• 🐞 Version 1.4.0_1123: The left earphone is turned off after 3-5 minutes of listening, and the solution is to roll back the firmware or upgrade to 1.7.0+.
• 🐞 Version 1.2.8_0719: The right side emits hissing at high frequencies. Corrected in 1.5.0.
• 🐞 Any version when connecting to iOS 15+: Headphones can "forget" the paired code. Helps reset via Mi Home.

If the update doesn’t help or the Mi Home app doesn’t see the headphones, try manually resetting the firmware:

1. Remove the headphones from the Bluetooth list.
2. Put them in the case and close the lid.
3. Press and hold the button on the case for 20 seconds (case indicator will start flashing yellow).
4. Take out the headphones and reconnect.

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If after updating the firmware sound became quieter, reset the equalizer settings in the Mi Home application (section "Sound → Reset to factory").

6. Alternative ways of connecting (if nothing helps)

If standard methods don’t work, try the non-obvious tricks that sometimes save even the “dead” headphones:

• 🔄 Connect via another phone: Take a second smartphone (preferably on Android 10+) and try connecting your headphones to it. If both headphones work, the problem is with your main phone settings.
• 🎵 Mono Mode: On Android, in Bluetooth settings, select "Use as a mono-earphone" for AirDots 2. Sometimes this causes the silent earphone to turn on.
• 🔌 Power bank charging: Connect the case to the power bank instead of the socket - sometimes the voltage from the USB- port of the phone or laptop isn't enough to fully charge.
• ❄️ Overheating/overcooling: Put your headphones in the fridge for 10 minutes (in a bag to keep the moisture out), then try plugging in. This can "reanimate" the capacitors.

Extreme method (only if the earphone does not respond at all):

1. Disassemble the headphone case (carefully tuck the latches with a plastic card).
2. Disconnect the battery from the board for 30 seconds (this will reset all settings).
3. Collect it back and try to connect it.

⚠️ Warning: Disassembling the headphone will void the warranty (if it is still valid), and there is a high risk of damaging the speaker plume or antenna.

7.When to contact the service: signs of irreparable breakdowns

If you’ve tried all the ways, but one Xiaomi AirDots 2 headphone still doesn’t work, it’s probably a hardware problem.

Where to fix:

• 🛠️ Xiaomi official service: Warranty remains, but repair may take 2–3 Web site addresses. mi.com/ru/service.
• 🔧 Local workshops: Faster and cheaper, but check reviews. Search on Yandex.Maps for "wireless headphone repair."
• 📦 AliExpress (if headphones are warranty): Open the argument by attaching a video of the problem. Sometimes they send new headphones for free.

If the cost of repair exceeds 50% of the price of the new AirDots 2 (about 1500-2000₽), it is more logical to buy a new pair. Note the Xiaomi AirDots 3 Pro or Redmi Buds 4 models, which are free of many of the "childhood diseases" of the second version.

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Before visiting the service, be sure to reset your headphones and check them on another phone. This will eliminate software problems and save you time.

FAQ: Frequent questions about a broken headphone