Xiaomi phone’s sound is not working: a complete guide to diagnosis and repair

Sudden loss of sound on a Xiaomi smartphone is one of the most annoying problems users face: you may not hear the person while calling, music on your headphones or system notifications, although the volume indicators show normal levels. The causes of malfunction range from software failures to hardware breakdowns, and without proper diagnosis you can spend hours on useless manipulations.

This article will help you to approach the problem systematically, and we will analyze typical scenarios when the sound is completely lost, it only works in headphones, or it is distorted during a conversation, POCO And the Mi flagships, but most of the techniques are universal.

Step 1: Quick diagnosis – Identify the type of problem

Before you start repairing, you need to know exactly what sound is not working, which will narrow down the possible causes:

• 🔊 No sound in speakers (music, video, games) – the problem may be media profile, drivers or physical damage to the speaker.
• 📞 You can’t hear the other person during the call – often the microphone or network settings are to blame.
• 🎧 The sound is only in the headphones – check the 3.5mm connector or port USB-C pollution.
• 🔔 No notifications and signals – failure in the audio profile settings.

Also pay attention to the side symptoms:

• 🔄 The sound appears and disappears on its own, a sign of unstable contact or application conflict.
• 🔇 The control panel displays the volume icon at zero, but the regulator does not respond to presses.
• 🚨 The phone emits wheezing or cracking - a break in the speaker or moisture may occur.

If the problem has occurred after the update MIUI, If you drop your phone or you connect your new headphones, these are valuable clues.

Step 2: Software solutions – from simple to complex

In 70% of cases, Xiaomi’s sound is lost due to software failures.

Reboot and check the basic settings

It sounds trivial, but a hard reboot (not a normal shutdown!) solves the problem 30 percent of the time. Press the power button for 10 to 15 seconds until the phone restarts.

Check the physical volume control on the sidebar

Make sure that the "Do Not Disturb" mode is not activated (Settings) → Notifications → Don't disturb)

Turn off Bluetooth – sometimes the phone “sticks” on headphones

Try to play sound from different sources (YouTube, music player, alarm clock)-->

If the sound only appeared in some apps, the problem lies in their settings. For example, YouTube can automatically turn off the sound when connecting to mobile data — check the app settings.

Resetting of sound settings

MIUI It allows you to reset audio parameters to the factory without losing data:

Settings → Sound and vibration → Additional (⋮) → Reset sound settings

This method helps if:

• 🔕 System sounds (keyboard, screen lock) are missing, but the music is playing.
• 📱 Volume controller does not respond to changes.
• 🔊 The sound is there, but it is too quiet even at maximum.

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If the sound appears after the reset but disappears again after a while, the conflicting application is to blame: delete the newly installed programs or perform a clean download (see section 2.4).

Clearing the cache and data of the "Phone" application

If the problem is only with sound during calls, reset the settings of the Phone app:

1. Open Settings → Applications → Application Management.
2. Find the phone (or Contacts on some firmware).
3. Click Warehouse → Clear the cache and Clear the data.

⚠️ Note: This will delete your call history, but will not affect your contacts (they sync with your Google or Mi Account account).

Safe mode and clean loading

If the sound is lost due to a third-party application, start the phone in safe mode:

1. Press the power button before the off menu appears.
2. Hold your finger to Turn off - a suggestion will appear to go to safe mode.
3. Confirm and wait for the reboot.

In safe mode, only system applications are running, and if a sound comes up, one of the apps you installed is to blame, to find the culprit.

• 🔍 Remove recently installed programs.
• 📱 Check the sound after each removal.
• 🔄 If the problem persists, perform a clean boot (turn off autoloading all applications in Settings). → Battery → Auto-start).

Step 3: Specific bugs MIUI and how to get around

Firmware MIUI It's known for its features, which sometimes break the sound, and these are the most common bugs and the ways to fix them:

Critical information for Xiaomi owners with Snapdragon processor 8 Gen 1/2: on these chips, a bug with the loss of sound after updating to MIUI 14+. Solution – rollback to the previous version of the firmware or manual update via Fastboot.

If your Xiaomi model is in the series POCO (for example, POCO F4 or X5 Pro, check the Game Turbo settings. This utility sometimes blocks system sounds in games. → Special facilities → Game Turbo.

Step 4: Hardware malfunctions – when you can not do without service

If the software didn't work, it's probably hardware, and here are the typical symptoms and their causes:

• 💧 The phone would fall into water or come into contact with moisture, oxidizing the contacts of the speaker or microphone, and even if the phone is working, corrosion can occur in weeks.
• 🔨 A hit or fall from a height - the speaker plume leaves or the audio codec on the motherboard is damaged.
• 🔌 Dust/junk in the 3.5 mm connector or USB-C — The phone "thinks" that the headphones are connected, and turns off the speakers.
• 🔋 Battery bloating - presses on the motherboard, causing malfunctions in the audio tract.

⚠️ Warning: If you notice any extraneous sounds when shaking your phone (such as a rattle inside the case), immediately turn off the device.

4.1. Self-diagnosis of hardware problems

Before visiting the service, perform these checks:

Light the flashlight in the connector 3.5 mm/USB-C — Is there any garbage or oxidation inside?

Connect the headphones and slightly move the plug: if the sound appears / disappears, the problem is the connector.

Call your phone from another device and listen: if the interlocutor hears you, but you do not, the upper speaker (conversational) is to blame.

Check if the phone is warming in the speaker area - this is a sign of a short circuit-->

If you suspect moisture, don't turn your phone on and plug in to charge! SIM-card and tray, soak your phone with a napkin and put it in a silica gel bag (from a shoebox) for 24 to 48 hours.

4.2. When to contact the service

There are cases when self-repair is impossible or dangerous:

• 🛠️ Requires a replacement speaker (price: 800-2500) ₽ model-wise).
• 🔧 Revolta audio codec (sweetening chip on the board - from 3000) ₽).
• 💦 Liquid intake – ultrasonic cleaning of the board is needed (2000–5000) ₽).
• 🔋 Bloated battery – complete replacement (1500–4,000) required ₽).

The cost of repairs on Xiaomi's authorized services is higher, but you get a warranty. Unofficial workshops may offer cheaper, but the risk of using unoriginal parts is high. Always ask what parts will be installed and demand a check.

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If the phone is warranty, do not open it yourself! the manufacturer has the right to refuse repairs in case of violation of seals.

Step 5: Advanced Methods for Power Users

If you're ready to experiment, these methods can bring sound back without going to the service. Attention: they require technical skills and can lead to data loss or a build-up of the phone.

5.1.Dumping via Fastboot

If the sound is lost after the update MIUI, It's going to help you clean up your firmware through Fastboot:

• 🖥️ Computer with drivers installed ADB/Fastboot.
• 🔗 Official firmware for your model (download from Xiaomi website).
• 🔧 Mi Flash Tool Programming.

Instructions:

1. Turn off the phone and press Volume Down + Power to log into the Fastboot.
2. Connect your phone to your PC and start the Mi Flash Tool.
3. Select the downloaded firmware (.tgz format) and press Flash.
4. Wait until the end (10-15 minutes).

⚠️ Warning: This method completely erases data from the phone. Pre-backup through Settings → Additionally. → Backup and reset.

Manual activation of the speakers through ADB

If the phone "thinks" that the headphones are connected, you can forcibly switch the audio output to the speakers through the phone. ADB:

adb shell settings put global force_use_dynamic_audio_policy 1


adb shell settings put global force_use_legacy_audio_policy 1

After you execute the commands, restart your phone. If you hear a sound, record the result by turning off the Media application's battery optimization.

5.3 Replacement of system audio files

If system sounds (notifications, alarm clock) are missing, but the music is playing, the problem may be in the corrupted files. /system/media/audio. For recovery:

1. Get root access (for example, through Magisk).
2. Download the original audio files for your version MIUI (can be extracted from the firmware).
3. Replace the files in /system/media/audio/ via Root Explorer.
4. Set the right rights: chmod 644 for files and chmod 755 for folders.

This method is risky – incorrect rights or incompatible files can cause a bootloop ( looped reboot).

Step 6: Features for popular Xiaomi models

Some Xiaomi models have unique sound problems, and this is what owners need to know:

6.1. Xiaomi Redmi Note 10/11/12 series

These phones are often found:

• 🔊 Problem: The sound in the dynamics disappears after the fall.
• 🔧 Reason: The plume of the dynamics (weak fastening from the plant) is leaving).
• 🛠️ Solution: Disassemble the phone and reconnect the plume (cost in the service: 500-1000) ₽).

Also on the Redmi Note 10 Pro, there is a bug with distortion of the sound in the headphones at a volume above 70%. This is treated by turning off the Mi Sound Enhancer.

6.2. POCO F3/F4/F5

The devices POCO Snapdragon processor 870/888 There's a problem with the overheating of the audio codec:

• 🔥 The sound disappears after 10-15 minutes of playing or listening to music.
• 🔇 The speaker starts wheezing, then completely shuts down.

Decisions:

• 📉 Limit processor performance through Settings → Battery → Performance mode → Balanced.
• 🧊 Install the Cool Tool app for forced cooling.
• 🔧 In extreme cases - replacement of thermopaste on the chip (in the service).

6.3. Xiaomi 12/13 series)

Flagships suffer from problems with Dolby Atmos:

• 🎵 The sound becomes quieter after the effects are activated.
• 🔊 Echoes appear in the headphones.

How to fix it:

1. Open Settings → Sound and vibration → Sound effects.
2. Turn off Dolby Atmos and EQUALIZER.
3. Reset the sound settings (see section 2.2).

On Xiaomi 13 Ultra, there is a bug with no sound in the camera when recording video. MIUI 14.0.15+.

Step 7: Prevention – How to Avoid Sound Problems in the Future

To ensure that the sound on Xiaomi does not disappear again, follow these recommendations:

• 📱 Update regularly MIUI — new versions fix audio bugs (but don’t update in the first 2 weeks after release – wait for reviews).
• 🔌 Clean the connectors every 3 months with alcohol and cotton swab. USB-C Use a wooden toothpick (not metal!).
• 💦 Avoid moisture, even if the phone has protection. IP53, It won't save you from salt water or steam.
• 🎧 Don't pull the headphones out of the cord, it damages the connector.
• 🔊 Do not set the volume to maximum - this leads to overheating of speakers and distortions.

It's also useful to install the AccuBattery app to monitor battery status, and a bloated battery is one of the main causes of hardware failures in sound.

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If you often connect your phone to an external speaker or car radio, use Bluetooth instead of an aux cable, which will reduce the load on the audio port and prolong its life.

Lastly, if you notice that the sound started to disappear after installing custom firmware (e.g. Pixel Experience or LineageOS), go back to the official version. MIUI. Not all custom builds work correctly with Xiaomi audio drivers.

FAQ: Frequent questions about Xiaomi sound