Why the sound on Xiaomi phone doesn’t work and how to fix it yourself

Sound problems on Xiaomi smartphones are one of the most common problems faced by users of Redmi Note 10/11/12, Poco X3/X4/X5, Mi 11/12 and other lines. In some cases, the sound disappears completely (neither in speakers nor in headphones), in others, it only works at low volume or is distorted, the causes can be covered by software failures of MIUI, and hardware breakdowns from a clogged connector to a damaged sound chip.

In this article, we will analyze all possible reasons why the sound stopped working on your Xiaomi, from banal (for example, accidentally activated mode “Do not disturb”) to serious (damage to the plume speaker). For each problem, we provide step-by-step instructions for diagnosis and elimination, including hidden settings. MIUI, team ADB, And tips for contacting the service center. IR-a blaster (e.g. Redmi Note 10 Pro) where audio problems are sometimes associated with driver conflict.

If you are not sure where to start, go through our quick diagnostic checklist – it will help narrow down the range of possible causes and save time.

1. Check basic settings: Do Not Disturb mode and volume

Before you commit to hardware breakdowns, make sure that the problem is not in the MIUI settings. Often the sound is lost due to accidentally switched on Do Not Disturb or lost volume parameters for individual applications.

How to check:

• 🔔 Do Not Disturb Mode: Swipe down from the top of the screen to open the notification bar. If the bell icon is crossed, tap it. Also check the mode schedule in Settings. → Sound. → Don't disturb.
• 📱 Media volume: press the physical volume button and make sure the Media slider is not at zero. (Poco) F3, Redmi K40) Volume for calls and media is divided!
• 🎵 Individual volume of applications: go to Settings → Annexes → App management, select a problem app (like YouTube or Spotify) and check for audio permissions.

Xiaomi’s MIUI 14+ models have a hidden “Settings → Special Options → Quiet Mode” feature that completely shuts down the sound, including system notifications. It’s easy to confuse with “Do Not Disturb,” but it works differently – check both!

2. Software failures: reboot, reset sound settings, update MIUI

If the basic settings are fine, but the sound still doesn't work, it could be a software failure, which is especially true after MIUI updates or custom firmware installations.

Step 1: Restart in Safe Mode

Safe Mode disables all third-party applications, which helps detect software conflict, so you can boot in it:

1. Press the power button before the off menu appears.
2. Slip and hold “Switch Off” (or “Reboot” on new models).
3. Confirm the transition to safe mode.

If the sound is working, it's a problem in one of the installed applications, either uninstall the recently added programs or reset the audio settings (see below).

Step 2. Reset the sound settings

MIUI has a separate section for resetting audio settings, which will help if the equalizer or drivers settings are lost:

Go to Settings → System → Resetting settings

Select “Reset Sound Settings” (not to be confused with a full reset!)

Confirm the action and restart the phone

Check the sound in speakers and headphones-->

Step 3: Update MIUI or roll back firmware

If the sound is gone after the update, try:

• 🔄 Update to the latest version MIUI (Sometimes the bugs are fixed in the following patches).
• 📉 Reverse to previous firmware via Fastboot (instructions for experienced users).
• 🛠️ Install custom restoration (for example, TWRP) and run a clean version MIUI.

⚠️ Attention: Firmware rollback on models with a locked bootloader (Redmi) 9A, Poco M3 It requires unlocking through the Mi Unlock Tool, without which the phone can become a brick».

Problems with speakers: diagnosis and cleaning

If the sound doesn't work only in speakers (but there are in headphones or Bluetooth), the problem is probably hardware.

• 🧹 Clogging speaker: dust, pile or moisture block the membrane.
• 🔊 Damage to the plume: after falling or disassembling the phone.
• 🔋 Sound chip failure: common on Redmi Note models 8/9 posthumidity.

How to clean the speaker yourself:

1. Use a toothpick (wrapped with a soft cloth) or brush to carefully remove debris from the grille.
2. To remove moisture, place your phone in a silica gel bag for 12 to 24 hours. Don't use a hair dryer!
3. Blow the speaker with a can of compressed air (keep at a distance of 10 cm).

Dynamics test:

To check if the speaker is working at least partially, do:

1. Go to Settings → About Phone → All settings → Test equipment (on some models, the path may differ).
2. Select “Dynamic Test” or “Audio Test”.
3. If the sound is, but quiet or distorted – a problem in the hardware (for example, damaged membrane).

💡

If the speaker is only wheezing on bass, try turning off the Sound Improvement feature in Settings → Sound → Sound Quality. On some models (Poco X3 NFC), this helps.

4. Problems with 3.5mm connector and Bluetooth audio

If the sound doesn’t work only in wired or wireless headphones, the problem may be:

• 🎧 Contaminated connector 3.5 mm (on Redmi Note models) 7/8/9).
• 🔌 Damaged headphone plug (check on another device).
• 📶 Bluetooth module failure (especially after updates) MIUI 13/14).

Cleaning of the connector 3.5 mm:

Use alcohol and a cotton swab to clean the contacts, and if the connector is wobbling, it's a sign of a break in the nest that requires soldering.

Bluetooth diagnostics:

1. Forget the device in Bluetooth settings (Settings) → Bluetooth → ⚙️ → Delete).
2. Reboot your phone and reconnect your headphones.
3. If the sound is interrupted, try turning off Absolute Volume in Developer Settings (see below).

5. Hidden MIUI settings: debugging sound through the engineering menu

MIUI has hidden tools for diagnosing sound that you can't see in the standard interface.

Method 1. Engineering menu (for experienced users)

1. Open the Phone app and enter the code ##4636##.
2. Select “Phone Information” → “Select Team” → “Audio”.
3. Check the Speaker, Headset, Bluetooth statuses, and if there's NG (No Good) next to them, it's a hardware problem.

Method 2: Developer settings

Activate them by tapping 7 times on the build number in Settings → About the phone.

• 🔇 Turn off absolute volume (if the sound is too quiet in Bluetooth).
• 🎛️ Check Sound Debugging and Bluetooth Codec Choice.

⚠️ Warning: Changing the settings in the engineering menu may result in a loss of warranty or unstable phone operation.Do not change the values unless you are sure of their purpose!

6. Hardware breakdowns: when to carry in the service

If none of the above methods worked, the problem is probably hardware, and here are some signs you should contact a service center:

• 💥 The phone fell or came into contact with water (even if everything was intact).
• 🔧 The sound disappears when pressing the body (a sign of a disconnected plume).
• 🔊 The speaker makes a crackle or is completely silent, but there is a sound in the headphones.
• 📱 On the screen appears the notification “Hearphones connected”, although they are not.

Cost of repair (example prices for Moscow, 2026):

How to choose a service center:

• 🛡️ Xiaomi official centers (guarantee is maintained, but prices are higher).
• 🔧 Unofficial workshops with good reviews (cheaper, but risk of poor repairs).
• 📦 If the phone is guaranteed, do not open it yourself!

7. Frequent Questions and Myths About Xiaomi Sound

Let’s look at common misconceptions and user questions: