Why Xiaomi Phones Are Losing Sound – And How to Fix It Yourself

You listen to music, watch videos, or talk on the phone, and suddenly the sound on Xiaomi goes away without warning. The speakers work, but there is no sound, or it comes and goes by itself. This problem is familiar to many owners of Redmi, Poco and Mi smartphones, especially after MIUI updates or mechanical impacts. In 80% of cases, the cause can be eliminated without a service center, just know where to look.

In this article, we’ll look at all the possible reasons why Xiaomi audio can turn off spontaneously, from trivial settings to hardware malfunctions, and you’ll get step-by-step picture instructions (for key steps), a table of model compatibility, and a unique checklist to diagnose a problem in 2 minutes. If the sound doesn’t come back after reading, you’ll know if the hardware or software malfunction is to blame.

1. Checking basic settings: why sound can be turned off by default

Before you dig deeper, make sure that the problem is not trivial settings. Xiaomi (especially on MIUI 14+) likes “smart” features that sometimes fail. For example, Do Not Disturb mode can activate on a schedule, and Adaptive sound can automatically mute media under certain conditions.

Here is what you need to check first:

• 🔊 Multimedia volume: press the physical volume button and make sure the slider is not at zero. on some models (e.g. Redmi Note 12 Pro)+) There are separate regulators for calls, notifications and media.
• 🛡️ Do Not Disturb Mode: Swipe down the notification bar and check if the crescent icon is activated. → Sound and vibration → Don't disturb and turn off the schedule.
• 🎧 Connected devices: sometimes the phone forgets to switch back to speakers after using Bluetooth headphones. Check the Quick Settings Panel for active Bluetooth.
• 🔄 Sound Profile: In some firmware (e.g. Poco) F5) There are separate profiles "Work", "Home", "On the street". Switch to "General" in Settings. → Sound. → Sound profiles.

If the sound is only lost in specific applications (for example, in YouTube or TikTok), the problem may be in the settings of the application itself.

• 📱 Permissions to access microphone/dynamics (in Settings) → Annexes → Permits).
• 🔇 Internal audio settings (for example, Instagram has a separate volume regulator for stories).

⚠️ Attention: On Xiaomi with MIUI 15 has Intelligent Sound Control, which automatically adjusts volume based on ambient noise. If it's on, the sound can spontaneously mute. Turn it off in Settings. → Special facilities → Sound. → Intellectual management.

2. Software glitches: how reboot and cache affect sound

If the basic settings are fine, but the sound still goes off, it's the software failure, most often after:

• 📲 Updates MIUI (especially by air without being discharged).
• 🔄 Third-party themes or launchers (they may conflict with system sounds).
• 🗑️ Memory filling (less than 1GB of free space leads to lags, including with sound).

Here are 3 ways to return sound without reset to factory settings:

Method 1: Forced resetting

Press the power button for 10-15 seconds until the phone turns off and turns on again. This will reset the temporary files responsible for the sound. On models with Qualcomm Snapdragon (for example, Redmi Note 11 Pro+), this method works in 60% of cases.

Method 2: Cleaning the cache of system applications

Go to Settings → Applications → Application Management and find:

• Media storage (clear the cache and data).
• Bluetooth (if the sound is lost when the headphones are connected).
• Phone and Contacts (if there is a problem with the sound of calls)

On Xiaomi with a MIUI 14+, the cache of audio services can weigh up to 500MB – cleaning it often solves the problem.

Method 3: Resetting the sound settings

Go to Settings → System → Settings → Resetting → Resetting the sound settings. This will return all volume, notifications and media settings to factory values, but will not affect personal data.

Clear the app cache|Reboot the phone|Check the vacant space (minimum) 2 GB)|Shut down. Bluetooth/NAC-headphones-->

Bluetooth and NAC conflicts: why the phone "forgets" speakers

One of the most common reasons for sound loss on Xiaomi is a conflict with Bluetooth devices, especially if you use wireless headphones with support for NAC (for example, Xiaomi Buds 4 Pro or AirDots).

How to check and fix it:

1. Open the notification bar and make sure the Bluetooth icon is not active. If it is active, tap it to turn it off.
2. Go to Settings → Connected Devices → Bluetooth and remove all saved headphones (click on the gear next to the device → Delete).
3. Reboot your phone and reconnect your headphones.

If the sound is lost only when connected to specific headphones, the problem may be:

• 🔄 Outdated headphone firmware (update them through the Mi Earphones app).
• 🎛️ Incompatible codec: in the settings of Bluetooth-device, select AAC instead SBC or LDAC.

⚠️ Note: Xiaomi with MediaTek chipset (e.g. Redmi) 10C POCO M5) There's a bug where the sound goes away when you connect to a car radio on Bluetooth.

Hardware problems: when speakers or connectors are to blame

If the software methods didn't work, the problem could be a physical malfunction, and here are the signs that the sound is missing due to the hardware:

• 🔊 The sound is only in headphones, but not in speakers (or vice versa).
• 📱 The phone fell or came into contact with moisture.
• 🔧 The sound appears when you press the body in a certain place (for example, near the connector). USB-C).

The most vulnerable components:

1. Speakers: Xiaomi often fails the lower speaker (responsible for low frequencies), and you can check it by turning on the music and alternately closing the speakers holes with your finger - if the sound does not change, one of them does not work.
2. USB-C connector: If the phone does not recognize headphones with a 3.5 mm connector (via an adapter) or charging is interrupted, the problem may be oxidation of the contacts.
3. Dynamic plume: On models with removable battery (for example, Redmi 9A), the plume can move away when falling.

What you can do on your own:

• 🧹 Clean the connector: take a toothpick, wrap it in cotton, moisten in alcohol and gently clean the connector USB-C. Do not use metal objects!
• 🔧 Check headphones: connect other headphones – if the sound appears, the problem is the old ones.
• 📱 Speaker test: call the phone from another device, and if the person you're talking to hear you doesn't, the top speaker (also called the conversational speaker) is to blame).

⚠️ Attention: If your phone falls into water, don't dry it with a hair dryer or rice, it will speed up the corrosion of your contacts. You'd better take it to the ultrasound cleaning service right away. IP53 (For example, Redmi Note 12 water can penetrate into the speakers through microphone holes.

5 Updates and firmware: why the sound disappears after the MIUI update

Xiaomi regularly releases updates for MIUI, but sometimes they break the sound.

• 📱 After updating to MIUI 15 The sound is lost on WhatsApp or Telegram.
• 🔊 Unknown items appear in the sound settings (for example, Additional Effects) that cannot be turned off.
• 🎵 Music is played through only one speaker, although stereo sound used to work.

How to fix it:

Step 1: Reverse update (if the sound of the drop after it)

Go to Settings → About → System Update. If there is a Cancel Update button, click it. This will return the previous version of MIUI, but delete all the data installed after the update.

Step 2: Manual installation of firmware

If there is no rollback, download the full firmware for your model from the official Xiaomi website (link) and install it through System Update → Three-point → Select a firmware file.

Step 3: Reset to factory settings

If nothing helps, do a hard reset (but save the data first!).

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. After the reboot, don’t restore the backup – check the sound first.

💡

Before reset, write down your phone's IMEI (type *#06# in the dialer). If the network goes missing after reset, this code will help restore it to the service.

6. Hidden MIUI features that break sound

MIUI hides some audio settings that may conflict with apps, such as:

• 🔇 Double-press for muffling: If you touch the screen twice during the call, the sound will turn off. → Special facilities → Universal access → Double touch.
• 🎚️ Automatic volume control: C Settings → Sound. → Additionally, the Adaptive Sound option can be included, which muffles the media in quiet rooms.
• 🔊 Separation of sound streams: Some models (e.g. Mi 13) can adjust a separate volume for each application. If the sound is only lost in Spotify, check its settings in Settings → Annexes → Spotify → Additionally. → Loudness.

Another little-known feature is Single Speaker Mode, which activates if the phone detects that one of the speakers is damaged, and automatically turns it off.

1. Go to Settings. → The phone.
2. Click 5 times on the MIUI version to activate the developer mode.
3. Back to Settings → Additionally. → For developers.
4. Find the item Disable monoaudio and deactivate it.

💡

If the sound is only lost in a particular app (like Instagram or VK Music), the problem is not with the phone, but with the app itself.

7.When to contact the service: signs of a serious breakdown

If you’ve tried all the techniques, but the sound on Xiaomi still shuts down on its own, it’s probably a hardware problem. Here are 5 signs that the phone needs to be repaired:

• 🔊 The sound is only in headphones, but is completely absent in the speakers (even after resetting).
• 📱 The phone makes a crackle or wheezing when playing the sound.
• 💧 A moisture notification appears on the screen (even if the phone hasn’t sunk).
• 🔧 The sound disappears after heating the phone (for example, during a game).
• 🔇 In the sound settings, gray (inactive) volume sliders.

The cost of repairing speakers on Xiaomi (Moscow, 2026):

If the phone is warranty, do not open it yourself - this will void the warranty. Contact the official Xiaomi service with a check and a box.

⚠️ Attention: On Xiaomi with IR-A blaster (for example, Redmi Note 11 Pro)+) The sound may be lost due to a conflict with the remote control.

FAQ: Frequent questions about missing sound on Xiaomi