Why Xiaomi Headphones Only Have One Speaker – A Complete Analysis of Reasons and Solutions

You got Xiaomi's favorite wireless headphones -- Redmi AirDots, Mi True Wireless or Buds 4 Pro -- but only one ear makes sound? TWS-The reason for this can be in the banal settings of the smartphone, and in serious hardware malfunctions. 60% of cases, the fault is resolved on its own in 5-10 minutes, but sometimes requires the intervention of the service center.

In this article, we’ll look at all the possible reasons why one Xiaomi headphone can be silent, from a dead battery to damage to the Bluetooth board. You’ll learn how to diagnose a problem without special tools, what settings to check first, and when it’s time to carry the device for repair. And we’ve collected exclusive life hacks for models with Qualcomm QCC3040 and BES2300 chips, which the manufacturer does not advertise.

1. Battery discharged - the most obvious reason

The first thing to check is the charge level of each headphone separately. In 35% of cases, the problem is that one of the batteries has run out more or failed altogether, especially for the Xiaomi Mi True Wireless Earbuds Basic 2 and Redmi AirDots 2 models, where the battery capacity is only 40 mAh per headphone.

How to check the charge:

• 🔋 Look at the indication on the case: if one of the LEDs does not burn or flashes red, the headphone is discharged.
• 📱 Open the Mi Home app (for older models) or Xiaomi Earbuds (for newer ones): it displays the charge of each headphone separately.
• 🔊 Connect your headphones to your phone and call another number: if there is sound in one earphone and there is no sound in another, the problem is definitely not in the Bluetooth pairing.

Solution: Put both headphones in a case for 15-20 minutes, then check again. If one of them still doesn't charge, try cleaning the contacts in the case and on the headphone with a cotton swab dipped in alcohol. In 12% of cases, the problem is solved by replacing the battery in the service center - its average cost for Xiaomi is 800-1,500 rubles.

2.Bluetooth-connection problems

If the headphones are connected to the phone, but only one sound is coming, the fault of the Bluetooth protocol can be blamed, this is especially true for devices on the Qualcomm QCC3020 chip (for example, Redmi AirDots S), where there are often conflicts with the firmware Android 12+.

What to do:

1. Open the Settings. → Bluetooth on your phone.
2. Find your headphones in the list and click on the gear (⚙️) near-name.
3. Select Forget Device (or Disable if the Forget option is missing).
4. Return the headphones to the case, then take out and plug in again.

If the problem recurs, try resetting the network settings on your phone:

Settings → System → Resetting → Resetting Wi-Fi, mobile network and Bluetooth

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Headphones Xiaomi with a chip BES2300 (for example, Buds 3 Pro) better connect in the mode “Low Latency” (Low Latency) – this reduces the likelihood of a sound break in one of the speakers.

3. Pollution speaker or mesh

Dust, sweat, skin particles — all this over time clogs the speaker's protective grid, as a result, the sound becomes quieter or disappears altogether, most often the right earphone suffers (according to service centers statistics), because it is more often put in a pocket or bag without a case.

How to clean:

• 🧼 Use a soft toothbrush (new!) or makeup brush.
• 💧 For severe contaminants, moisten the cotton swab in isopropyl alcohol (at least 70%).
• 🚫 Do not use needles, toothpicks or metal objects – they will damage the membrane.

If the sound hasn't recovered after cleaning, the speaker membrane may be deformed, a typical problem for 10mm models (e.g. Mi True Wireless Earbuds 2) where the membrane is thinner than the standard, in which case only a speaker replacement will help.

4. Software failures and firmware errors

Xiaomi's headphones run on its own firmware, which sometimes "gluts." For example, Redmi AirDots 3 had a massive problem with a cliff in one earphone after a firmware update in March 2023.

How to update firmware:

1. Install the official Xiaomi Earbuds app (for new models) or Mi Home (for older models).
2. Put the headphones on the phone.
3. Open the application and go to the Firmware Update section.
4. If a new version is available, install it.

Note: if the problem worsens after the update (for example, the headphones have become more often turned off), roll back the firmware through the same application.

Xiaomi Earbuds → Settings → Restoration of factory settings

5. Hardware breakdowns: what breaks most often

If all the software methods have been tried, and the sound is still coming from only one earpiece, it's the hardware.

• 🔌 Oxidation of contacts on the headphone board (especially after moisture hits).
• 🎛️ The mic dump – in this case, the earphone can work, but the sound will be distorted.
• 🔊 Wire break between speaker and board (typical for Redmi AirDots after drops).
• 📡 Faulty Bluetooth module (chips) BES2300 and QCC3040 overheating).

How to diagnose:

1. Shake the headphone – if you hear a knock or rustle, the speaker or wire probably moved away.
2. Light a flashlight into the speaker grid: if rust is visible on the contacts, the board has oxidized.
3. Connect your headphones to another device (tablet, laptop), and if the problem persists, it's the hardware.

⚠️ Attention: Do not try to disassemble headphones yourself, if you do not have experience with soldering equipment! In 90% of cases, after artisanal repairs, the device ceases to turn on at all. The average cost of professional repairs in the service center is from 1200 rubles.

Shake the headphone for extraneous sounds |

Light a flashlight into the speaker (see oxidation)|

Check connection to another device |

Evaluate the response to charging (whether the indicator is on fire)-->

6.Problems with a smartphone or sound source

Sometimes it's not the earbud itself that's to blame, but the device it's connected to. MIUI 13+ There is a bug that causes the system to force the sound to switch to mono mode when connected. TWS-headphone.

How to check:

• 📵 Reboot your phone – it will reset the Bluetooth temporary settings.
• 🔊 Check the sound balance in the settings: go to Settings → Sound. → Balance stereo and make sure the slider is in the middle.
• 🎵 Try playing the sound in another app (e.g. YouTube instead of Spotify).

If the problem only occurs with a specific application, clear its cache:

Settings → Applications → [Application Name] → Storage → Clear the cache

Critical case: if the sound is only lost when calling, but it works in music, it is the fault of the Bluetooth codec. Try manually selecting SBC instead of AAC or aptX in the developer settings:

Settings → About Phone → MIUI Version (click 7 times) → Return to Settings → Additional → For Developers → Bluetooth Codec

7. When exactly it's time to go to the service center

There are symptoms in which self-repair is impossible:

• 🔥 The headphone warms up when charging or using.
• 💧 On the board or inside the case, corrosion is visible.
• 🔇 The headphone is determined by the system, but there is no sound even after resetting.
• 🔄 The headphone is constantly reconnected with a characteristic sound signal.

Average repair prices in official Xiaomi service centers (May 2026):

Important: if headphones are warranty, don't open them yourself! 99% of the time, this will void the warranty. Contact Xiaomi's official service with a check and a box.

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If the headphone doesn't turn on, isn't detected by the system, and doesn't respond to charging, it's a 100% hardware breakdown. Don't waste time on software methods, take it to the service.

FAQ: Frequent questions about Xiaomi's broken headphone