Why Xiaomi only has one headphone: a full analysis of the causes and solutions

Now, this is a familiar situation, where you take out your favorite Xiaomi AirDots, Redmi Buds, or Mi True Wireless, and you plug it into your phone, and you find that the sound comes from only one headphone, and the other one is either silent or barely audible. What's the matter? Xiaomi wireless headphones can be disrupted by software errors or hardware malfunctions, and if the first one is often solved in 5 minutes, the second one may require repair or replacement.

In this article, we've systematized all the possible reasons why one Xiaomi headphone stopped working, from a trivial battery discharge to a factory defect. You'll learn how to diagnose a malfunction yourself, what settings to check first and when to contact the service center. And for the most common models (AirDots Pro 2, Buds 4 Pro, FlipBuds Pro), we have prepared step-by-step instructions based on their design features.

Before you rush into repair, answer two key questions:

1. Is the problem manifesting itself with only one device (like a smartphone) or with all?
2. Does the headphone remain silent or “wake up” periodically?

These details will narrow the range of possible causes by 70%.

1. Battery discharge or charging problems

The most obvious reason that many people overlook is that Xiaomi wireless headphones have separate batteries in each module, and if one of them is more depleted, it can shut down or work unstable, especially for models with asymmetric energy consumption (for example, the AirDots 3 Pro, where the main earphone consumes charge faster).

How to check:

• 🔋 Look at the charge indication in the Mi Home or Xiaomi Wear app (for new models). If one earphone shows 0-10%, the problem is discharge.
• 🔌 Put both earbuds in a case for 10 to 15 minutes, then check. If the silent earbud went off, it was low charge.
• ⚡ Check the charging contacts in the case: they are often oxidized or contaminated, because of which one earphone does not charge.

⚠️ Warning: If the headphone doesn’t charge even after cleaning the contacts, it could indicate a power controller malfunction – a common problem with the Redmi Buds 3 Lite after a year of use.

2. Bluetooth connection failures

Xiaomi’s wireless headphones use Bluetooth Low Energy (BLE) protocol, which sometimes crashes. If one headphone connects and the other doesn’t, the problem may lie in:

• 📱 Incorrect Bluetooth settings on your smartphone.
• 🔄 Conflict with other connected devices.
• 📡 Interference from other wireless devices (Wi-Fi, microwaves).

How to fix it:

1. Turn off the headphones in Bluetooth settings, then connect again (on some models you need to hold the button on the case for 5-7 seconds to reset).
2. Remove the device from the list of conjugates and reconnect.
3. Check if the headphones are connected to another device (for example, a laptop or tablet).

For models that support Mi AI Assistant (such as Buds 4 Pro), try resetting the settings through the app:

Settings → My devices → [Hearphone Name] → Reset to factory

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If the headphones are connected, but the sound is only in one, try manually selecting stereo mode in the Bluetooth settings (on Android: "Sound settings → Audio Mode → Stereo").

3. Software failures and firmware errors

Xiaomi's proprietary software sometimes gets buggy, especially after updates, such as AirDots 3 Pro, which had a massive V12.7.4.0 firmware problem that left earphones shut down after 10 minutes of use.

• 🔄 Reboot the headphones (hold the touchpad on both headphones for 10 seconds).
• 📲 Update to the firmware via Xiaomi Wear (if available).
• 🖥️ PC reset (for advanced models like FlipBuds Pro).

How to update firmware:

1. Open the Xiaomi Wear app.
2. Go to the headphone section of your headphones.
3. Click on "Firmware Update" (if available).
4. Wait until it is finished (don’t turn off Bluetooth!).

Check out the firmware version in Xiaomi Wear

Reset the headphones to factory settings

Update the firmware (if there are updates)

Reconnect the headphones to your smartphone-->

⚠️ Note: If your headphones stopped working after the firmware update, it may indicate incompatibility with your smartphone model. For example, Redmi Buds 4 does not work well with devices on Android 10 and below.

4. Mechanical damage and factory defect

If all the software methods have been tried and the problem persists, it could be a hardware malfunction.

• 🎧 Speaker (burnt out or left contact).
• 📶 Bluetooth antenna (especially after falls).
• 🔋 Power controller (earphone not charged).
• 🛠️ Microphone (in models with noise making, for example, Buds) 3T Pro).

How to check:

1. Light a flashlight into the speaker's grille - if the membrane is torn, a replacement will be required.
2. Shake the earphone: can you hear the noise inside? This could indicate that the parts are disconnected.
3. Try connecting the headphone to another device (PC, other smartphone).

⚠️ Note: If the headphone Xiaomi warranty, do not disassemble it yourself - it voids the warranty. in service centers Xiaomi often change the faulty headphone warranty, even if the appearance of it looks whole.

5. Problems with device compatibility

Not all smartphones work equally well with Xiaomi wireless headphones.

• 📱 iPhone: There may be problems with stereo sound due to limitations AAC-codec.
• 🤖 Older Android (below 8.0): no support LE Audio, which can cause one headphone to turn off.
• 💻 PC/laptop: often connect headphones in Hands-Free Profile mode (HFP) instead A2DP (stereo).

How to fix it:

1. On iPhone: Go to Settings → Bluetooth → (i) next to the headphones → Forget this device, then plug it back in.
2. On Android: Enable Developer Mode and select Bluetooth Audio Codec → AAC or SBC.
3. On PC: In the sound control panel, select Stereo instead of Headset.

6. Effects of moisture and pollution

Even if your Xiaomi AirDots have IPX4 or IP54 protection, prolonged exposure to moisture or sweat can cause corrosion of contacts or short circuits.

• 💧 The headphone works only after drying (for example, in rice or silica gel).
• 🔊 The sound appears, but with strong distortions.
• ⚡ The headphone warms up when charging.

What to do:

1. Leave your headphones in a dry place for 24-48 hours (use silica gel packs).
2. Wipe the contacts with a cotton swab dipped in isopropyl alcohol (at least 90%).
3. If the problem remains - contact the service (cost corrosion is possible).

⚠️ Warning: Don't use a dryer to dry! hot air can damage the lithium battery and speaker membrane.

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If Xiaomi headphones stop working after getting moisture, don’t try to turn them on right away.Let them dry for at least 24 hours, which will increase the chances of recovery by up to 80%.

7. When to contact the service center

If you’ve tried all the methods in this article, but one Xiaomi headphone still doesn’t work, it’s time to think about professional help.

• 🔧 The headphone does not respond to reset and charging.
• 🔊 The speaker is cracking or completely silent (with visible integrity).
• 📉 Battery discharges in 5-10 minutes (symptom of "bloated" Li-Po).
• 🛠️ On the body visible traces of opening or deformation.

Cost of repairs in informal services (2026):

• Dynamic replacement: 1200–2500 ₽.
• Battery replacement: 800–1500 ₽.
• Repair of the board (contact soldering): 1500–3000 ₽.
• Full replacement of the headphone (if repair is not possible): 2000–4000 ₽.

⚠️ Note: Xiaomi’s official service centers often refuse to repair headphones older than 1-1.5 years, offering instead a discount on the new model.

FAQ: Frequent questions about Xiaomi's broken headphone