Why Xiaomi has only one headphone: a complete analysis of the problem

You pulled Xiaomi AirDots, Redmi Buds or Mi True Wireless out of your case, but the only sound you can hear is a familiar situation? One in five wireless headphone owners of the brand have this problem, and the causes can be either software failures or physical malfunctions. In 60 percent of cases, you can fix the problem yourself in 5-10 minutes without resorting to a service center.

In this article, we’ll look at all the possible reasons why one Xiaomi headphone stopped working, from a trivial battery drain to damage to a Bluetooth module. You’ll learn how to diagnose a problem, which settings to check first, and when to really go for repair.

Spoiler: 80 percent of the time, it's not the earbud itself that's to blame, but the settings of the smartphone, the firmware conflict, or the contamination of the contacts in the case, and let's start with the simplest, and we'll gradually get to the most complex hardware breakdowns.

1. Checking the underlying causes: battery, connection, case

Before you dig deeper, eliminate the obvious. Start with the headphone charge: users often forget that the left and right headphones charge independently, and if one of them is more discharged, it may not turn on at all or turn off after a few seconds.

How to check:

• 🔋 Put both earbuds in the case for 10-15 minutes, then pull it out. If the indicator on the case flashes only once (or burns red), then one earbud is not charging.
• 📱 Look at the charge level in a mobile app (e.g. Mi Earphones or Xiaomi Wear) if it only displays one headphone, the sync problem is the problem.
• 🔌 Try connecting the case to another charger, sometimes it's a cable or an adapter that's not giving you enough current.

If the earphone is not charging at all, check the contact areas in the case and on the earpiece itself.

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Wipe the contacts with a cotton swab dipped in alcohol (at least 70%).Do not use needles or metal objects - this will damage the coating!

Another common case is that headphones are mismatched, and this happens when you take them out of the case at the same time, or you reset the settings on one of them, to reconnect.

1. Put both earphones in the case.
2. Close the lid for 10 seconds, then open it.
3. Take out the headphones and wait for 20-30 seconds – they should automatically synchronize (the indicator blinks on both).
4. If it doesn’t help, press and hold the button on the case (if any) for 10 seconds to reset.

2. Software failures: reset, firmware, Bluetooth conflicts

If the basic checks didn’t work, the problem is probably software, and Xiaomi’s wireless headphones are based on firmware, which sometimes crashes — especially after upgrades or when connected to multiple devices.

The first thing you need to do is reset the headphones to the factory.

Once reset, the headphones will disappear from the list of conjugated devices on the phone.

1. Open the settings → Bluetooth on your smartphone.
2. Remove the old pair of headphones (click on the gear) → «Forget the device»).
3. Take the headphones out of the case and select them from the list of available devices.

If the reset didn't help, the problem could be a firmware conflict, such as after an Android update or a new update. MIUI Some headphones (AirDots Pro 2, Redmi Buds 3 Pro) are starting to malfunction:

• 📱 Update the firmware of headphones through the official application Xiaomi Wear or Mi Earphones.
• 🔄 Reverse the Bluetooth version on your smartphone (if the update was recent). → The phone. → Version. MIUI and select "Roll back the update».
• 🤝 Try connecting your headphones to another device (tablet, laptop) if both work, the problem is with your smartphone settings.

Physical malfunctions: speaker, microphone, wires

If the software methods didn't work, it's time to check the hardware, and let's start with the obvious, the speaker, and users often confuse the lack of sound with a clogged mesh filter (which sits on the front of the headphone).

How to clean the speaker:

• 🧼 Use a soft toothbrush (new!) or a cotton swab soaked in alcohol.
• 🚫 Don’t blow into your earbud with your mouth – it can drive dust deeper.
• 🔊 Check the sound after cleaning: if it appears but wheezes, the filter is damaged and needs to be replaced.

Another common problem is the wiring break inside the earphone, which is true for Xiaomi Mi Neckband models or semiconductor Redmi AirDots.

• 🎧 The earpiece is turned on, but the sound is interrupted when moving.
• 🔌 The indicator is on, but there is no connection.
• 🔊 There is a sound, but very quiet or with interference.

You can check it out like this:

1. Carefully bend the headphone at the connection point with the arch (if any).
2. Shake it near your ear – if you hear foreign sounds (such as rattling), it is a sign of a cliff.
3. Put your headphone on your phone and move the wire around the connectors, so if the sound comes or goes, the contact is a problem.

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If the earphone is physically damaged (cracks, dents, traces of oxidation), home repair is not possible.

Another pitfall is the microphone, which in some models (AirDots Pro, Redmi Buds 4) is only built into one headphone (usually the right one), and if the microphone breaks, it can block the entire device from working, and it's easy to check it.

• 📞 Call someone and try talking to each earpiece in turn.
• 🎤 Turn on voice recording on your phone and check which earphone transmits sound.

4. Bluetooth problems: codec, interference, OS limitations

Sometimes the problem isn't with the headphones, but with the Bluetooth protocol of your smartphone. For example, Xiaomi headphones support codec. AAC and SBC, But on some devices (especially not the ones).-Xiaomi) It can use aptX that they don't understand, and it causes one earbud to connect and the other to not.

How to check and correct:

1. Open the Settings. → Bluetooth on your phone.
2. Find your headphones in the list and click on the gear next to the name.
3. See the audio codec section or the audio quality section if you have aptX or LDAC, change AAC.

On smartphones Xiaomi with MIUI 12+ There's a hidden setting that can block one of the headphones from working:

Enter the phone code ##4636##


Go to Phone Information → Bluetooth audio codec




Select "AAC" or "SBC" instead of "Auto"

And it can also be interference. Wireless headphones run at 2.4 GHz, which is used by both Wi-Fi routers and microwaves. If there are many devices around, one earphone can get lost.

• 📶 Reconnect to headphones elsewhere (such as outside).
• 🔄 Restart the router – sometimes it causes severe interference.
• 📵 Turn off Wi-Fi on your phone and check if the headphone is working.

Audio codec checked (AAC/SBC)

Other Bluetooth devices disabled

Connection tried elsewhere

Updated firmware phone and headphones-->

5. Specific problems of Xiaomi models

Some Xiaomi headphone models have unique bugs that are worth knowing about.

Xiaomi AirDots (1-2 generation):

• 🔋 The left leg often discharges faster than the right leg because of a power controller error.The solution is to always charge your headphones to 100% and not use them at levels below 20%.
• 🎧 After updating the firmware to version 1.7.1, the sound may disappear in one earphone.

Redmi Buds 3 Lite:

• 🔊 The right earphone can turn off when the volume is above 80%, due to the peak power limit.
• 📱 When you connect to an iPhone, the microphone often doesn't work. AAC Bluetooth.

Mi True Wireless 2:

• 🎵 The left leg may not turn on if it was connected to another device (like a laptop) in mono mode.
• 🔋 If the earphone isn't charging in the case, try swapping it with the right one.

For models with active noise cancellation (AirDots Pro 2, Buds 4 Pro) there is a separate problem: if ANC It's on, one earbud might fall out because of overheating:

1. Update your firmware to the latest version (for AirDots Pro 2, the current version is 2.1.4).

6. When to contact the service: signs of hardware breakdowns

If you've tried all of these, but one earbud still doesn't work, it's probably a hardware problem, and here are some signs you should go to the service center:

Physical injuries:

• 💥 Cracks on the body or speaker.
• 💦 Traces of oxidation on contacts (green or white plaque).
• 🔥 The smell of smoke when working.

Problems with electronics:

• 🔋 The headphone does not charge at all (even after cleaning the contacts).
• 📡 The indicator does not flash when switched on.
• 🎛️ In the application Xiaomi Wear headphone is determined, but its charge level is always 0%.

3. Software failures that are not treated by reset:

• 🔄 The headphone is constantly rebooting (blinking red-blue).
• 📵 Not determined by any device (even after resetting).
• 🎧 There is a sound, but it is very distorted (wheezing, crackling).

The cost of repairs in official service centers Xiaomi:

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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!

Before going to the service:

1. Make a reset of headphone settings (see Section 2).
2. Take a photo or video of the problem (this will help the wizard diagnose the malfunction faster).
3. Check by phone whether the service repairs your model (some SC do not take headphones older than 2 years).

7.Prevention: How to avoid breakdowns in the future

To prevent one Xiaomi headphone from failing again, follow the simple rules:

When charging:

• 🔌 Use the original cable and adapter (especially for fast-charging models).
• 🚫 Do not leave headphones in the case on charging for more than 24 hours - this reduces the battery life.
• 🔋 Charge the case to 100% at least 1 time a month (if you do not use headphones constantly).

When used:

• 💦 Avoid getting moisture, even if the model has protection. IPX4 (It doesn't save you from steam or condensation).
• 🎧 Do not turn on the maximum volume for a long time - it overloads the speaker.
• 📱 Regularly update your firmware through the Xiaomi Wear app.

During storage:

• 🧺 Keep your headphones in a case, not a scatter in your pocket or bag.
• 🌡️ Avoid overheating (do not leave it in the sun or near the battery).
• 🧴 Once a month wipe the contacts and speakers with an alcohol napkin.

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If you use headphones during training, dry them for 10-15 minutes outdoors (not a hairdryer!).

Important: If the headphones start to "glutch" after falling or getting liquid, immediately turn them off and do not turn them on until completely drying (at least 48 hours).

FAQ: Frequent questions about Xiaomi's broken headphone