One Xiaomi wireless headphone doesn’t work: full recovery manual

You took Xiaomi headphones out of the case, turned on your favorite playlist, and suddenly you found that one of the headphones was silent, the sound is only on the right or left, and the second one is either completely disabled or emits barely audible interference, a situation familiar to many owners of Redmi AirDots, Mi True Wireless or Xiaomi Buds. The reasons can be different from a banal battery discharge to a serious break in the speaker.

In this article, we’ll look at all the possible scenarios for why one Xiaomi headphone doesn’t work, and give you step-by-step diagnostic and repair instructions, how to tell a software failure from a hardware malfunction when you need to go to the service center, and when you can solve the problem yourself in 5 minutes, and we’ve also collected unique data on typical breakages of specific models (for example, why the Redmi Buds 3 Pro often fails the left earphone after a firmware update).

So don't rush to throw out your headphones or buy new ones -- 80 percent of the time, you can bring them back to life -- let's start with the simplest checks and gradually move on to more sophisticated methods.

1. Primary diagnosis: check the obvious

Before you disassemble your headphones or reset your settings, make sure the problem isn’t on the surface. Here are 4 basic steps that users often ignore:

• 🔋 Battery charge. Even if the indicator on the case is green, one of the headphones could have discharged unevenly. Check the charge level of each earphone separately through the Mi Home or Xiaomi Wear app.
• 🎧 Physical damage. Check the headphone under bright light to see if it has cracks, dents or oxidation on the contacts (especially if the headphones have been in water).
• 🔊 Sound balance. In phone settings (Settings) → Sound. → Stereo balance) check if the slider is shifted left/right, sometimes after connecting to another device.
• 📱 Connect to your device. Try connecting your headphones to another smartphone or PC. If both of your headphones work on the second device, the problem is with your phone's settings.

If after these checks, the headphone still doesn't work, move on to the next section. If the problem is solved, remember the reason to avoid it in the future. For example, uneven battery discharge often occurs if you store the headphones outside the case or use an unoriginal cable to charge.

2. Resetting headphone settings: a universal method

Most of the problems with Xiaomi headphones are due to a firmware failure or a pair conflict. Hardware reset will return the devices to the factory settings and reconnect them to each other.

1. Put both headphones in the case and close the lid for 10 seconds.
2. Pull them out and hold the buttons on both headphones at the same time (usually touch panels). Redmi AirDots 3 needs to press and hold 15 seconds, Mi True Wireless 2 - 10 seconds until the indicators start flashing red and white.
3. After resetting, the headphones will automatically reconnect to each other (you will hear a beep). If this does not happen, repeat the procedure.
4. Connect the headphones to the phone again via Bluetooth.

If one earphone still doesn't work after reset, try updating the firmware through the official app.

1. Open Mi Home or Xiaomi Wear.
2. Select your headphones in the list of devices.
3. Go to Settings → Update firmware.
4. If a new version is available, install it.

3 Connection problems: why headphones "can't see" each other

A common complaint from users is, "One earphone connects to the phone and the other doesn't." This means that the pair is severed at the Bluetooth level of the headphone communication.

• 🔄 Synchronization failure after firmware update (relevant for Redmi Buds 3 Pro and Xiaomi Buds 4).
• 📡 Interference from other devices (Wi-Fi routers, microwaves, other headphones).
• 🔋 Low charge of one of the headphones (less than 10%) – it can automatically turn off.
• 🛠️ Mechanical damage to the antenna inside the earphone (for example, after a fall).

How to restore the connection between headphones:

1. Forced reconnect: 1. Remove the headphones from the list of Bluetooth devices on the phone. 2. Put both headphones in the case, close the lid for 30 seconds. 3. Remove them - they must automatically connect to each other (the indicators will flash synchronously). 4. Connect to the phone again.
2. Use mono-connection mode (if one earphone works and the other does not): 1. Take a working earphone and press it 3 times in a row. 2. It will go into single-connection mode (it will flash faster). 3. Connect it to the phone and check the sound. 4. Repeat for the second earphone. If both earphones work separately, but not together - the problem is in synchronizing the pair (reset or firmware is needed).

4. Hardware malfunctions: when without repairs can not do

If the software methods didn't help, it's probably a hardware problem, and here are the typical Xiaomi headphone hardware breakdowns and their signs:

If you suspect a hardware breakdown, but don't want to bring the headphones to the service, you can try disassembling and inspecting them yourself.

1. Take a thin plastic card (like a SIM card) and gently put the back cover of the headphone on. Be careful, the latches are fragile!
2. Check the board for oxidation (green coating), fallen contacts or bloated capacitors.
3. If you see oxidation, wipe the contacts with a cotton swab dipped in isopropyl alcohol.
4. Check the integrity of the plumes connecting the speaker to the board.

⚠️ Attention: Disassembling Xiaomi headphones deprives you of warranty! If the device is warranty, you should contact the service center. Also remember that the boards in the headphones are often covered with protective varnish - do not use abrasive materials for cleaning.

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Before disassembling, take a picture of each step on the phone - this will help to properly assemble the headphone back. Pay special attention to the location of the sealing gums and speaker membranes.

5. Problems after firmware update

Firmware updates should improve the performance of the headphones, but sometimes they lead to the opposite effect. For example, after upgrading to version 1.7.0.3, many users of Xiaomi Buds 4 experienced that the left earphone stopped connecting or began to stutter.

• 🐛 Bugs in new firmware (especially relevant for beta versions).
• 🔄 Conflict with previous settings (e.g. saved) EQ-preset).
• 📱 Incompatible with the Bluetooth version on your smartphone.

How to get back to work:

1. Firmware rollback (if available): 1. In the Xiaomi Wear app, go to the headphone settings. 2. Find the "Firmware Update" section. 3. If you have the option to "Roll back" or "Go back to the previous version" - select it.
2. Reset smartphone settings (if the problem is in the phone's Bluetooth stack): 1. Go to Settings → System → Reset. 2. Select Network Settings Reset (this will remove all stored Bluetooth devices). 3. Reboot your phone and reconnect the headphones.
3. Manual update via PC (for advanced users): 1. Download the latest stable firmware for your model from the XDA Developers forum. 2. Connect your headphones to your PC via Bluetooth. 3. Use the QFlash Tool for firmware (instructions are available on the forum).

⚠️ Warning: Firmware headphones through unofficial tools can lead to complete loss of performance! Do this only if you are confident in your actions and you have a backup of the original firmware.

6. Recovery after moisture is injected

Xiaomi headphones have IPX4 or IPX5 protection, but that doesn't mean they're completely waterproof. If the headphone has been in water, rain, or even sweat, oxidation of the contacts can cause it to fail.

• 💧 The earpiece is turned on, but the sound is intermittent or wheezing.
• 🔋 Quickly discharged (moisture accelerates corrosion of the battery).
• 📶 Bluetooth signal is unstable, the headphone is turned off through 1-2 minute.

What to do immediately after getting moisture:

1. Dry the earphone: 1. Wipe it with a dry napkin (don't use a hair dryer!). 2. Put it in a silica gel container (boxes made from shoes) for 24 hours. 3. Don't turn on the earphone until completely dry!
2. Clear the contacts: 1. Disassemble the headphone (if you can). 2. Wipe the board and contacts with a cotton swab dipped in isopropyl alcohol (90%+). 3. Let it dry for 12 hours.
3. Check the speaker: If the sound is distorted after drying, the speaker's membrane is probably deformed, in which case only replacement will help.

If the earphone does not turn on after moisture is injected, do not try to charge it - this can cause a short circuit.

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Even if the earphone after getting moisture worked, the consequences can manifest later (corrosion, battery leakage). 1-2 weekdays.

7. When to contact the service center

If you have tried all the methods in this article, but one Xiaomi headphone still doesn’t work, it probably requires professional intervention.

• 🔧 The headphone is physically damaged (cracks, dents, burn marks).
• 🔋 Battery swollen or does not hold charge (less than 10 minutes of operation).
• 🎛️ After disassembly, you found fallen parts or burned items on the board.
• 📡 The headphone is defined as an “unknown device” and does not connect to any gadget.

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

Before the service visit:

• Check if the warranty is valid (usually 12 months from the date of purchase).
• Bring a check or a warranty card (if saved).
• Make a backup of your headphone settings (if they are saved in your Mi Account).

If the headphones are warranted, but the service refuses to repair them (for example, citing “mechanical damage”), you have the right to require an independent examination.

8. Prevention: how to prolong the life of headphones Xiaomi

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

• 🔋 Charging:
• 🧼 Gone:
• 📱 Connection:

You should also pay attention to the program settings:

• Turn off Absolute Volume in the Android Developer Settings (this will prevent volume spikes).
• In the Xiaomi Wear app, disable the Automatic firmware update function to avoid installing “raw” versions.
• If you use headphones for calls, turn off Noise Reduction in the settings - it speeds up battery discharge.

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The average life of Xiaomi headphones is 2-3 years when used correctly, the main reasons for early failure: overheating during charging, mechanical damage and firmware updates without backup.

FAQ: Frequent questions about Xiaomi headphones that don't work