Why Xiaomi wireless headphones only have one headphone – a complete analysis of the causes and solutions

Xiaomi's wireless headphones are a popular accessory for their combination of price, sound quality and functionality. But even in reliable models like the Redmi AirDots, Mi True Wireless Earphones or Xiaomi Buds 3 Pro, sometimes the typical problem is that one headphone, mientras otro funciona sin problemas, stops working. The situation is unpleasant - music only sounds in one ear, the microphone does not catch the voice, or the earphone does not turn on at all.

80% of the time, the problem is solved by yourself without going to the service center, but you need to correctly diagnose the cause: it can be a software failure (for example, after a firmware update), a hardware malfunction (damage to contacts or battery), or even the wrong settings on your smartphone. In this article, we will analyze all possible scenarios from a banal battery discharge to a Bluetooth module breakdown, and also give unique instructions for resetting Xiaomi headphones to factory settings that you will not find in the official documentation.

1. Check for obvious causes: battery, connection, physical damage

Before digging deeper, rule out three of the simplest and most common reasons why one Xiaomi earphone might be silent:

• 🔋 The battery is drained. In cheap models like the Redmi AirDots S, the headphone batteries run out unevenly, and if one earphone was in the case longer or was used more actively, it could sit at zero.
• 🔌 Incorrect connection to the device. Sometimes the smartphone “sees” only one headphone due to a Bluetooth failure or conflict of profiles.
• 🛠️ Mechanical damage, check if there's moisture in the speaker, if the charging connector in the case is contaminated, if there's any cracks in the case.

How to check:

1. Put both earbuds in the case for 10-15 minutes. The indicators on the case should burn the same (red/orange when charging, green/white when fully charging). If one indicator does not light up, there is a problem with contacts or battery.
2. Make sure the headphones are properly placed in the case: the magnetic contacts must match. Xiaomi Buds 3/4 Pro models have position sensors - if the headphone is lying curved, it will not charge.
3. Connect your headphones to another device (tablet, laptop), and if both of the headphones work on the second device, the problem is with your smartphone settings.

⚠️ Note: If one headphone doesn’t turn on after charging in the case, don’t try to wake it up with multiple button presses. In Xiaomi models, this can lead to a Bluetooth module locking, and then you will need a complete reset.

2. Software glitches: headphone reset and firmware update

If the hardware checks didn't help, it's probably the headphone firmware or the conflict with the smartphone's Bluetooth stack, most often after:

• 📱 Updates to the firmware of the smartphone (especially on the MIUI 13/14).
• 🔄 Automatic headphone updates via Mi Home or Xiaomi Wear app.
• 🤝 Connecting headphones to multiple devices at the same time (for example, to a phone and a laptop).

Decisions:

Resetting headphones to factory settings

In most Xiaomi models, the reset is performed as follows:

1. Put both headphones in the case and close the lid.
2. Press and hold the button on the case (usually located behind or below) for 10-15 seconds until the indicator flashes red and white.
3. Open the case cover – the headphones should automatically reboot and appear in the list of available Bluetooth devices.

For Xiaomi Buds 3 Pro and newer models:

1. Get the headphones out of the case.


2. Press the touch panels on both headphones for 10 seconds.




3. Wait for the double beep and the flashing of indicators.

⚠️ Note: After reset, Xiaomi headphones may lose their binding to your Mi Account. if you used the Quick Connection feature (for example, on the Internet). Xiaomi/Redmi Smartphones, you will have to re-configure them.

Update the firmware through Mi Home

If the reset didn’t help, check the relevance of the firmware:

1. Install the Mi Home app (for older models) or Xiaomi Wear (for newer ones).
2. Connect the headphones to the application through Profile → Add the device.
3. Go to the headphone settings section → Firmware update.

Disconnect headphones from other devices |

Charge the case and headphones up to 50%+|

Stay in a stable Wi-Fi area |

Do not interrupt the update process-->

3. Bluetooth problems: conflicts, codecs, smartphone settings

Sometimes the problem isn't with the headphones, but with the Bluetooth module or settings on the smartphone.

• 📵 The earphone is connected, but the sound is only in one channel.
• 🔊 Bluetooth settings display only one headphone (e.g., "Redmi") AirDots_L" paired).
• 🎵 Music interrupted, interference or "robotic" sound heard.

How to fix it:

Resetting Bluetooth settings on your smartphone

On Android (including MIUI):

1. Go to Settings → Connections → Bluetooth.
2. Click on the three dots in the upper right corner → Reset Bluetooth settings.
3. Reboot your smartphone and reconnect the headphones.

On the iPhone:

1. Forget the device: Settings → Bluetooth → (i) next to the headphones → Forget this device.
2. Turn off/on Bluetooth at Control Point.
3. Put the headphones back on.

Changing the Bluetooth codec

Some smartphones (especially the MIUI 12+) have aptX or LDAC codec by default, which may conflict with Xiaomi headphones. Try switching to SBC or AAC:

1. Put the headphones on.
2. Open Settings → Sound → Bluetooth sound quality.
3. Select SBC (Most Compatible Codec)

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If the sound is worse after changing the codec, go back to AAC, which provides a balance between quality and stability.

4. Hardware malfunctions: what can be repaired independently

If the software methods didn't work, the problem could be the hardware, and let's look at the most common breakdowns and how to fix them.

The most common hardware problem is the oxidation of contacts in the case or on the headphones themselves, which is due to moisture or sweating.

1. Take a cotton swab dipped in isopropyl alcohol (at least 70%).
2. Gently wipe the contacts on the headphones and inside the case (especially spring connectors).
3. Let it dry for 10-15 minutes.

⚠️ Warning: Do not use acetone, vodka or other aggressive liquids to clean! They can damage plastic and rubber seals. Also do not blow on contacts - saliva contains salts that accelerate corrosion.

5. Specific problems of Xiaomi models

Different Xiaomi headphone lines have their own "sicknesses": this is what is typical of popular models:

Redmi AirDots (1/2/3 generation)

• 🔊 Problem: After updating the firmware, one earphone begins to "stutter" or turn off.
• 🛠️ Solution: Roll back the firmware through Mi Home (if the previous version is available) or reset the headphones to factory settings.

Mi True Wireless Earphones 2/3

• 🎵 Problem: Left earphone connects, but sound only goes in the right (or vice versa).
• 🛠️ Solution: In the Mi Home app, disable the "Mono Mode" function (if it is accidentally activated).

Xiaomi Buds 3/4 Pro

• 🔋 Problem: One earphone discharges 2-3 times faster than another.
• 🛠️ Solution: Battery calibration: completely discharge both headphones before switching off, then charge to 100% without interruptions.

For active noise cancellation (ANC) models, the additional cause of the malfunction is a malfunction of the noise reduction microphones.

1. Turn off the ANC in the headphone settings.
2. Update the firmware through Xiaomi Wear.
3. If the problem remains, contact the service (possibly damaged microphone).

6. when you can not do without a service center

If you have tried all the methods in this article, but one Xiaomi headphone still does not work, most likely, you will need professional repair.

• 🔧 Physical damage: cracks on the body, traces of oxidation inside, bloated battery.
• 🔊 Lack of sound during the working connection (indicates a breakage of the speaker or sound card).
• 🔋 The headphone does not charge even after cleaning the contacts and resetting.
• 📡 Permanent communication breaks on any device (a sure sign of a Bluetooth module malfunction).

The cost of repairs in official Xiaomi service centers (for 2026):

⚠️ Warning: Do not accept repairs in informal workshops if they offer to "sweeten the chip" without diagnosis. 60% In cases where such interventions lead to a complete loss of functionality of the headphones. mi.com/ru/service.

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If the headphones are warranted (usually 12 months), the repair will be free, but the warranty is removed for mechanical damage or traces of self-repair.

7. Prevention: how to extend the life of wireless headphones Xiaomi

To avoid problems with a single headphone in the future, follow these guidelines:

• 🔌 Charging: Use only the original cable and power supply. Do not leave headphones in the case for charging more than 24 hours - this reduces the battery life.
• 💧 Humidity: After training or rain, dry your headphones for at least 1 hour before charging.
• 📱 Connection: Don't connect your headphones to multiple devices at the same time.This causes Bluetooth profile conflicts.
• 🔄 Updates: Check firmware updates in Mi regularly Home/Xiaomi Wear, but don’t install betas – they often contain bugs.

For models with ANC (e.g. Xiaomi Buds 3 Pro):

• 🎧 Do not use noise cancellation at maximum power for more than 2 hours in a row - this overheats the chips.
• 🔇 Regularly clean the microphone grilles with a soft brush (for example, a toothbrush).

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If the headphones have not been used for a long time (more than a month), before connecting, completely discharge and charge them 2-3 times.

FAQ: Frequent questions about Xiaomi's broken headphone