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

You've turned on your favorite playlist, but it only comes from one headphone? The one-way sound problem in Xiaomi headphones is one of the most common complaints of users. Most often it arises spontaneously: yesterday everything worked, today the left or right speaker is silent, the reasons can be hidden in both banal smartphone settings and serious hardware malfunctions.

In this article, we’ll look at all the possible reasons why Xiaomi is using the same name as Redmi, POCO, Mi plays only one headphone, from software failures to physical cable damage, you will learn how to diagnose the problem yourself, which settings to check first, and when to bring the device to the service. And if you use wireless headphones (for example, Xiaomi AirDots or Buds), there is a solution for you too.

Spoiler: 70 percent of the time, you can fix a problem in 5 minutes without any tools, and let's start with the simplest.

1. Checking basic settings: why a smartphone can "muffle" one headphone

Before you disassemble your headphones or carry your phone for repair, make sure that the problem is not in the audio settings. Often users accidentally activate modes that turn off one of the channels.

Open the Settings → Sound and vibration and check:

• 🔊 Sound balance: If the slider is moved left or right, one earpiece will sound quieter or silent.
• 🎧 Mono-sound mode: in some firmware MIUI There's an option for people with hearing impairments that duplicates the sound in both earbuds.
• 📱 Sound Profile: Switch to General or Music – sometimes Conversation or Outdoor modes limit stereo sounding.

If you use Bluetooth headphones, check:

• 🔄 Connecting to two devices: Some Xiaomi models (like the AirDots Pro) can "forget" one earbud when connected to multiple gadgets. Forget the device in Bluetooth settings and reconnect.
• 🔋 Battery charge: if one earphone is discharged more severely, it can automatically shut down.Check the charge level in the Mi Earphones app.

⚠️ Note: Some Xiaomi models (e.g. Redmi Note 10 Pro) after the update MIUI 13 appears a sound balance bug. If the slider resets after rebooting, reset the sound settings to the factory in Settings → System system → Resetting settings → Reset the sound settings.

2. Software failures: when firmware or applications are to blame

If the settings are fine, but the sound is still coming from only one earbud, the problem could be a system failure or application conflict.

Step 1: Reboot your smartphone, which is trivial, but it helps 30 percent of the time, especially if it crashes after you install an update or a new app.

Step 2. Check the sound in safe mode, which will help to eliminate the influence of third-party applications:

1. Press the power button before the off menu appears.
2. Press and hold “Switch Off” (or “Switch Off Power”) until a request to go to Safe Mode appears.
3. Confirm and wait for the reboot.
4. Test the headphones – if the sound appears in both, one of the installed apps is to blame.

To find the culprit, think about the programs you installed before the problem occurred, and most often conflicts are caused by:

• 🎵 Applications for equalizer (Equalizer) FX, Music Volume EQ).
• 🎮 Game emulators (PPSSPP, Dolphin).
• 🔊 Modified players (Poweramp, VLC custom-set).

Step 3. Reset the sound settings if the problem has occurred after the update MIUI, reset the sound parameters:

Settings → System → Resetting settings → Resetting sound settings →

Reboot your smartphone|Check the sound in safe mode|Remove newly installed applications|Reset the sound settings-->

Step 4. Update the firmware. Older versions. MIUI (particularly MIUI 12 and below) there were bugs with the sound in the headphones:

Settings → About the phone → System update

⚠️ Note: If after updating to MIUI 14 lost sound in one headphone, try to roll back to the previous version via Fastboot. instructions are on the official forum Xiaomi (section "Rollback firmware»).

3.Problems with 3.5 mm connector: oxidation, dust and mechanical damage

If you use wired headphones, the problem may lie in the 3.5mm connector itself on your smartphone, which over time gets clogged with dust, oxidized or loosened by frequent connections.

How to check the connector:

1. Put your headphones on and move the plug slightly in the connector, so if the sound comes or goes, the contact problem.
2. Light a flashlight into the connector: if foreign particles (dust, dirt, rust) are visible, it must be cleaned.
3. Try other headphones – if they have the same problem, the connector is to blame.

How to clean the connector:

• 🧹 Use a toothpick (not metal!) or a cotton swab dipped in alcohol. Carefully scroll inside the connector.
• 💨 Blow the connector with compressed air (for example, a canister for cleaning equipment).
• 🔌 If the contacts are oxidized, wipe them with a wipe (yes, regular school!).

If the connector is shattered: on some Xiaomi models (for example, Redmi 9 or Xiaomi). POCO X3) The 3.5mm connector is not securely attached to the motherboard, and if it's used frequently, it can move away, and in this case, only soldering in the service center will help.

4. Damage to the cable or headphone plug

If the smartphone connector is fine, but the sound comes from only one headphone, the problem is probably the headphones themselves.

• 🎧 The cable at the plug (rubbed from frequent folds).
• 🔌 The place of soldering speakers (especially in cheap models).
• 🔊 One of the speakers (can burn from voltage drops).

How to check the headphones:

1. Connect them to another device (laptop, tablet, other smartphone), and if the problem persists, the headphones are to blame.
2. Listen, if you're bending the cable around, if you're doing that, the cable's damaged.
3. Check the plug for rust or bent contacts.

How to fix:

• 🔧 If the cable is damaged at the plug, it can be soldered (cost in the service is 300-800 rubles).
• 🔊 If one speaker is silent, try gently tapping on the headphone body - sometimes helps with sticking the membrane.
• 🆕 If the headphones are cheap (like Xiaomi Basic), repairs can cost more than new ones, and then it's easier to buy a replacement.

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To extend the life of headphones, wrap the cable at the plug and speakers with tape or shrinkage - this will protect against rubbing in places of frequent folds.

Important: If you use Xiaomi Hybrid or Dual Driver headphones, check if one of the drivers in the settings has turned off. The Mi Earphones app must have Dual Dynamic Driver mode active.

5. Bluetooth headphones: why one earphone can turn off

With wireless headphones (Xiaomi AirDots, Buds, FlipBuds), the situation is more complicated - the reasons can be both in the headphones themselves and in the Bluetooth module of the smartphone.

Frequent causes:

• 🔋 One headphone is discharged: check the charge level in the Mi Earphones app.
• 🔄 Synchronization failure: headphones can “disconnect” with each other.
• 📱 Bluetooth problems on your smartphone: old versions of the protocol or interference.
• 🎛️ Incorrect sound settings: in some firmware MIUI There is a bug with mono mode for Bluetooth.

How to fix it:

1. Reconnect the headphones: Settings → Bluetooth → Click on the gear icon next to the headphones → Forget the device then re-do the pairing.
2. Reset your headphones: For AirDots, press the buttons on both headphones for 15 seconds before the red light flashes.
3. Update your headphone firmware: Use the official Mi Earphones app (available on Google Play).
4. Check the Bluetooth codec: in the developer settings (Settings) → The phone. → Version. MIUI → 7 times tap) select Bluetooth Audio Codec and install SBC or AAC.

If nothing helps:

• 🔧 The problem may be the Bluetooth module of the smartphone. Check if other wireless devices (columns, fitness bracelets) are working).
• 🆕 On some Xiaomi models (e.g. Mi 11) after upgrading to the MIUI 13 problems with Bluetooth 5.2. rollback to MIUI 12.5 can help.

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If one of the Bluetooth headphones flashes white and the other flashes red, it means that you lose sync. Solution: Put both headphones in the case, close the lid, wait 10 seconds and re-pull.

6. Hardware breakdowns: when without service can not do

If all the previous methods didn't work, the problem is probably hardware.

On a smartphone:

• 🔊 Damage to the sound chip (for example, after falling or getting moisture).
• 📱 The dump of contacts on the motherboard (often happens after repairs).
• 🔌 Bluetooth module malfunction (earphones connect, but the sound goes only in one).

Headphones:

• 🎧 Breaking wire inside the cable (especially at the base of the plug).
• 🔊 Damage to the speaker membrane (e.g. from loud sound).
• 🔋 Battery Bloating (in wireless models).

How to diagnose:

• If the problem manifests itself with all headphones - the smartphone is to blame.
• If only with one pair - the problem is in the headphones.
• If the sound is lost after hitting or falling, it is likely mechanical damage.

Cost of repair (average prices in Russia):

⚠️ Note: If your Xiaomi gets caught in the rain or drowns, don’t dry it with a hair dryer or rice – this will aggravate corrosion.Take it to the service within 24 hours: the chances of saving the soundboard will be higher.

7. Features of specific Xiaomi models

Some Xiaomi smartphones have unique bugs associated with the sound in the headphones. Here are the most problematic models and their "diseases":

Redmi Note 8/8 Pro, Note 9/9 Pro:

• 🔊 Frequent problems with a 3.5 mm connector due to poor soldering on the board.
• 📱 After updating to MIUI 12 may lose the sound in the left earphone. Solution: roll back on the left earphone. MIUI 11 or reset the settings.

POCO X3/X3 Pro:

• 🎧 Bluetooth bug LE Audio: Some headphones (e.g. Xiaomi Buds 3) are connected, but only one sound is used. LE Audio in the developer settings.

Mi 10/10 Pro, Mi 11:

• 📱 Problems with the sound chip Qualcomm WCD9380: It can “stop” one channel at high load.

Black Shark 3/4:

• 🎮 In game mode, one earphone can be turned off to "optimize performance." Turn off mode in Shark Space.

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If you have a Xiaomi Mi A3 or another model with Android One, the problem may be the lack of proprietary codecs MIUI. Install the app ViPER4Android manually tune.

8 Prevention: How to Avoid Sound Problems in the Future

To avoid the problem of one-way sound, follow these recommendations:

For wired headphones:

• 🧼 Clean the 3.5mm dust connector regularly (every 2-3 months).
• 🔌 Do not pull the plug on the cable – take on the metal part.
• 🎧 Keep your headphones in your case to avoid rubbing the cable.

For Bluetooth headphones:

• 🔋 Do not allow full discharge – charge when the level is below 20%.
• 📱 Update your firmware regularly through the Mi Earphones app.
• 🔄 Reset your headphones once a month (press the buttons for 15 seconds).

For the smartphone:

• 📲 Don’t install questionable “sound enhancement” apps – they often conflict with the system.
• 🔄 After major updates MIUI reset the sound settings.
• 🚫 Avoid mechanical damage (shocks, falls, moisture).

Recommended accessories for protection:

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If you often listen to music on the subway or on the street, use noise-cancelling headphones (e.g. Xiaomi). ANC). They are less prone to external interference that can cause sound failures.

FAQ: Frequent questions about a single headphone problem