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

You pick up your Xiaomi to listen to music, take a call or watch a video — but instead of the expected sound of silence, or worse, you hear only distorted interference. The situation is familiar to many owners of smartphones of this brand, and the problem can occur on both budget Redmi and flagship Xiaomi 13/14. In 80% of cases, the malfunction is due to software failures, but sometimes hardware failures or even features of the MIUI firmware.

In this article, we’ll look at all the possible causes of the lack of sound, from trivial (like accidentally pressing a volume button) to complex (corrupting an audio codec), and give you step-by-step instructions with screenshots, a symptom table for quick diagnosis, and tips on how to avoid repeated problems.

If you're not a techie, don't worry: we've explained it in plain language, without too much jargon, and for experienced users, we've added unique data about hidden MIUI settings that are not dokumented in official manuals.

1. Checking basic settings: what could turn off the sound?

Before you panic and carry your phone to the service, make sure that the problem is not the basic settings. Xiaomi is known for its abundance of "hidden" switches that can be accidentally activated.

Start with the obvious:

• 🔊 Volume buttons: press the top or bottom key on the sidebar. Sometimes they get stuck or they go off in your pocket.
• 📵 Do Not Disturb: Swipe down from the top of the screen and make sure the bell icon is not crossed out. → Sound and vibration → Don't disturb.
• 🎧 Connected headphones: Even if you don't use them, your phone may "think" they're connected. Turn off Bluetooth and check the connector. Type-C/3.5 mm for debris.
• 🔕 Sound profile: in MIUI There are separate profiles for General, Calls and Media. → Sound and vibration → Sound modes.

If you don't have a sound after this manipulation, move on to the next step, but first answer the question:

Important! Some models (e.g. Xiaomi 12T or Redmi K50) have a separate setting Dynamic Sound Optimization in Settings → Additional → Special features. If it is on, the sound can be distorted at high volume.

2. Software failures: reboot, cache and safe mode

If the basic settings didn’t help, the problem is likely software. MIUI (and now HyperOS) is known for its “gluts” with sound after updates or installing third-party apps.

Here's what we need to do in order:

1. Reboot your phone. Yeah, it's trivial, but 30 percent of the time, it solves the problem. Press the power button and select Reboot.
2. Clear the system cache: Go to Settings → Memory → Clean. Click on three dots in the top right corner and select Deep Clean. Check the system's Cash and confirm the cleanup.

Run it in safe mode.

1. Press the power button before the turn off menu appears.


2. Press and hold your finger on "Switch off power."




3. there will be a proposal to go to safe mode - confirm.

Only system applications work in this mode, and if a sound appears, one of the apps you install is to blame (most often Viber, WhatsApp, or games with aggressive audio optimization).

If the sound is not even in safe mode, the problem is deeper - it may be damaged firmware or audio driver.

3. Update firmware and reset settings

One of the most common scenarios is that the sound disappeared after updating MIUI or HyperOS. Xiaomi regularly releases patches, but sometimes they break the sound subsystem, especially for the Redmi Note 11 and Xiaomi 12 models after upgrading to HyperOS 1.0.

How to fix it:

• 🔄 Update your firmware to the latest version: Go to Settings → The phone. → Update system. Click "Check Updates" and install available patches. After the upgrade, be sure to restart your phone.

Resetting the sound settings

Settings → System → Resetting settings → Resetting sound settings →

This will bring all audio parameters back to factory, but it won't affect your data.

Hard reset (if nothing helps)

⚠️ Attention! Full reset will delete all data from your phone. Backup in Settings first. → Additionally. → Backup.

To reset:

Settings → About phone → Reset settings → Delete all data

If the sound is gone after the update, check the forums (for example, 4PDA or XDA Developers) – perhaps your model has already released a “fix” in the form of a patch or roll-back firmware.

Hardware problems: speakers, connectors and audio codec

If the software methods didn't work, the problem is probably hardware. Xiaomi's smartphones are more likely to fail:

• 🔈 Speakers (especially the lower one, which is responsible for music and calls).
• 🎧 Connector. Type-C/3.5 mm (if the phone thinks the headphones are connected).
• 🛠️ Audio codec (a microchip responsible for sound processing).
• 🔋 Dynamic plume (often departs after falls).
• For models with HyperOS, there is another trick: Settings → Sound and vibration → Additional → Audio effects → Reset settings Here incompatible audio filters can be enabled.

A unique lifehack for Xiaomi with a Snapdragon processor: if the sound is lost when you’re under high load (such as in games), try turning off Performance Optimization in battery settings for a particular application.

6. Problems with Bluetooth and wireless headphones

If the sound is lost only when connected to Bluetooth devices (earphones, speakers, car radio), the problem may lie in:

• 🔄 Profile conflict: phone connects but doesn’t switch to audio profile (A2DP).
• 🔋 Energy conservation: MIUI aggressively disables Bluetooth module in the background.
• 🛠️ Bluetooth stack failure: especially relevant after updates.

How to fix it:

1. Remove the device from the list of conjugates and reconnect: Settings → Bluetooth → Click on the device → Forget
2. Turn off battery optimization for Bluetooth: Settings → Applications → Application management → Three points → Show system → Bluetooth → Battery → No restrictions
3. Reset network settings (this will also reset Bluetooth): Settings → System → Reset settings → Reset network settings

If the problem persists, try connecting the headphones to another phone. If they work, it's your Xiaomi. If not, it's the headphones themselves.

💡

On Xiaomi models with Snapdragon 8 Gen 2 chips (such as Xiaomi 13 Ultra), it sometimes helps to disable the dual Bluetooth connection function in the audio settings.

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

If you've tried all the techniques in this article, but the sound never came, it's probably a hardware problem.

• 🚨 No sound in all modes (calls, music, alarm clocks).
• 🔊 The speakers are not responding to the test signals (#4636##).
• 💥 Before the sound went away, the phone fell, wet or overheated.
• 🔧 Mechanical crackling is heard in the speakers (a sign of physical damage).

What to do:

1. Official service Xiaomi: Pros: warranty repair (if the phone is warranty), original spare parts. Cons: long (2-4 weeks), expensive (replacement of the audio codec can cost 5-10 thousand rubles).

Informal workshops

• Pros: fast (1-2 days), cheaper.
• Cons: risk of unoriginal spare parts, loss of warranty.

⚠️ If your Xiaomi warranty, do not open it yourself - it will void the warranty.

Average prices for repairs (in Moscow, 2026):

8 Prevention: How to Avoid Sound Problems in the Future

To prevent the sound from going out on your Xiaomi again, follow these guidelines:

• 🔄 Regularly update the firmware, but before that read the reviews on the forums (sometimes updates break the sound).
• 🧹 Clean the Type-C connector once in a while. 2-3 months (you can use a toothpick or compressed air).
• 🎵 Do not set the volume to maximum for a long time - this quickly disables the speakers.
• 🚫 Avoid "left-handed" firmware (castom) ROM), If you are not sure of their stability.
• 💧 Avoid getting moisture, even if the phone has protection. IP53, The speakers may be affected.

If you often connect Bluetooth headphones, turn off battery optimization for them (how to do this, read section 6). It is also useful to reset Bluetooth settings once a month:

Settings → System → Reset settings → Reset Bluetooth settings

For models with HyperOS, there is another tip: turn off the Adaptive Sound function in the sound settings if you notice distortions when changing volume.

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If you often listen to music through speakers, install the SoundAssistant app from Google Play.It lets you fine-tune the balance between the top and bottom speakers on Xiaomi, which prolongs their lifespan.

Frequently asked questions