One headphone does not work on Xiaomi: how to fix wired headphones yourself

You listen to your favorite track, but suddenly notice that wired headphones only sound on one side? The problem with a broken headphone on Xiaomi smartphones is common — and not always the fault of the headphones themselves. 60% of the time, the malfunction is due to a 3.5 mm connector, phone settings or mechanical damage to the cable. Before you run to the service center or buy a new headset, try 10 proven ways to help return stereo sound without unnecessary costs.

In this article, we’ll look at unique diagnostic techniques for Xiaomi smartphones (including models with a Type-C connector) that you won’t find in standard instructions, how to distinguish hardware from software failure, why the problem can only appear in certain applications, and what to do if the headphones work normally on another device but are silent on your Redmi or POCO.

1. Check basic sound settings on Xiaomi

Before disassembling headphones or carrying the phone for repair, make sure that the problem is not in the software settings. Xiaomi smartphones (especially on MIUI 12-14) have features of working with sound that can create the illusion of a breakdown.

Open Settings → Sound and vibration → Headphone settings and check:

• 🔊 Sound balance: If the slider is moved left or right, one earphone will sound quieter or completely disconnect.
• 🎧 Monoaudio mode: if activated, the sound will only go through one earpiece (a feature for people with hearing impairments).
• 🔄 Sound effects: Turn off all bass amps and equalizers - they can "pull" stereo balance.

Also worth checking Settings → Special features → Hearing – here you can turn on the “Amprovement of sound in headphones”, which sometimes leads to the shutdown of one channel.

Diagnostics of 3.5 mm or Type-C connector

One of the most vulnerable elements in Xiaomi smartphones is the audio jack, which, even if it looks whole, could oxidize contacts or bend the “tongues” that transmit sound inside, especially for the Redmi Note 8/9 and POCO X3 models, where the connector often suffers from dust.

How to check:

1. Put your headphones on and sway the plug a little bit, and if the sound comes or goes, the contact problem is.
2. Light a flashlight into the connector: if you see foreign particles (dust, dirt, oxidation), it must be cleaned.
3. Try connecting your headphones through a Type-C → 3.5mm adapter (if you have a model without a connector, like the Xiaomi 11T). If you get a sound, it's the phone's connector.

Use the following to clean the connector:

• 🧴 Alcohol and Cotton Swab (to remove oxidation).
• 💨 A compressed air canister (for blowing out dust).
• 🔍 Toothpick with soft end (for careful removal of dirt).

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If the connector doesn't work after cleaning, try connecting the headphones via a Bluetooth adapter, which is a temporary solution that will help you use the headset until you fix the connector.

3. Checking headphones on another device

To prevent the headphones from breaking, plug them into another smartphone, tablet, or PC. If the problem persists, it's the headset's fault. If the sound is working properly, look for the reason in Xiaomi's phone.

Common headphone malfunctions:

If the headphones work on a different device than Xiaomi, move to the next section. If not, try cleaning the plug (wipe the contacts with a pin or alcohol) or checking the cable for microcracks (especially at the base).

4.Resetting sound settings and rebooting the phone

Sometimes headphones fail due to MIUI software errors, for example, after a system update or third-party applications (such as ViPER4Android or Equalizer FX) are installed, the audio output configuration may “fly off”.

How to reset the sound settings:

1. Go to Settings → Applications → Application Management.
2. Find the Sound app (or Audio Effects) and click Storage → Clear the data.
3. Reboot the phone.

If this doesn’t help, do a full reset of the sound settings:

adb shell settings delete global sound_effects_enabled

This command must be entered through ADB (by connecting the phone to the PC).

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If the problem has occurred after the MIUI update, try rolling back to the previous firmware version or wait for a patch from Xiaomi. Often, sound bugs are fixed in the next updates.

5. Checking for hardware damage to the phone

If none of the previous methods worked, it's probably the hardware of the phone that's the problem.

• 🔌 Damage to the audio chip (relevant to Xiaomi Mi) A2/A3 fall-out).
• 💧 The swelling of the sleeves or the sleeves of the mother.
• ⚡ Short circuit after connecting uncertified headphones.

How to diagnose:

1. Call the contacts of the connector with a multimeter (if you have skills in working with electronics).
2. Check if the microphone is working – if so, the audio chip is working.
3. Connect your phone to an external USB sound adapter (e.g. Apple USB-C → 3.5mm). If sound appears, it's the phone's connector or audio track.

Call the multimeter connector|Check the microphone of the headset|Connect an external sound adapter|Check the fee for the presence of oxidation (when disassembling)-->

If you suspect damage to the board, don’t try to fix it yourself – 90% of the time, it makes the problem worse. Contact Xiaomi’s service center (especially if the phone is warranty-free).

6. Alternative ways to connect headphones

If the standard connector does not work, but you urgently need sound, use workaround solutions:

• 📶 Bluetooth adapter: connect wired headphones to a mini transmitter (e.g. Baseus) WM01), And he's on the Bluetooth phone.
• 🔌 USB/Type-C Headphones: Use a headset with digital output (e.g. Xiaomi Type-C Earphones).
• 💻 External sound map: USB-C audio-output hubs (e.g, UGREEN CM569) often saved when the snail breaks.

These methods won’t solve the jack problem, but will allow you to use headphones until you fix the phone.

7. When to carry the phone to the service

Contacting the Xiaomi service center makes sense in the following cases:

• 🛠️ You tried all the ways in the article, but the connector still doesn’t work.
• 💦 The phone fell into the water or was exposed to moisture.
• ⚡ After connecting the headphones, the phone restarts or turns off.
• 📉 A notification appears on the screen saying “Audio device is not supported».

The cost of repairing the 3.5 mm connector in official Xiaomi services ranges from 800 to 1500 rubles (depending on the model). If the problem is in the audio chip, repair can cost 3000-5000 rubles.

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Before going to the service, make a backup of the data! When repairing the audio track, sometimes you need to flash the phone, which can lead to loss of information.

8. Prevention: how to prolong the life of headphones and connector

To avoid problems in the future, follow simple rules:

• 🧲 Do not pull the cable when removing headphones - take on the plug.
• 🚫 Do not leave the headphones connected in your pocket – this leads to a break in the wire.
• 🔋 Do not use headphones while charging (especially on the POCO F3 redmi K40 — It could damage the audio chip).
• 🧼 Clean the connector regularly (every 2-3 months) from dust and dirt.

If you listen to music often, consider buying removable headphones (like the KZ ZSN Pro X or Blon BL-03) – they’re easier to fix when the wire breaks.

FAQ: Frequent questions about broken headphones on Xiaomi

If neither of these methods worked, it may be a hardware problem that can only be fixed in the service center, but 80 percent of the time, both headphones can be restored by themselves, just by following the instructions and taking the time to conclude that they have broken.