Previous articleMissing sound on Xiaomi Redmi: what to do and how to fix

When your Xiaomi Redmi suddenly loses sound, it can be taken by surprise, you try to watch a video, answer a phone, or start a game, but the answer is death silence, and this is one of the most common problems that smartphone owners face, and most often it is solved by software methods without going to the service center.

Before you panic or carry the device to the wizard, you need to conduct a basic diagnosis: an audio codec failure, accidentally switching the output of sound to a Bluetooth headset or “sticking” the system process are the main reasons for the silence of the speaker. In this article, we will discuss a step-by-step algorithm of actions that will help return the audio to your favorite applications.

It’s worth noting that the MIUI (or HyperOS) interface has its own features that are different from pure Android. So standard solutions may not work unless you take into account the specifics of the Xiaomi shell. We’ll look at both simple volume settings and more complex engineering menus.

Primary Diagnostics and Physical Switch Checking

The most common, but often ignored, reason is mechanical switches or random settings. Many Redmi Note and Pro models have physical volume buttons on the side. Make sure the slider is not zero. Press the volume button and check if the icon is worth the crossed out speaker.

It's also worth checking if there's an external device connected to the phone, and the smartphone might have "thinked" that you'd connected a Bluetooth headset or wired headphones, and automatically redirected the sound there, and even if the device is in another room, the background connection might be blocking the main speaker.

In some cases, the problem is dirty dynamics. If the speaker grid is filled with dust or pile from your pocket, the sound may become quiet or disappear altogether. Carefully inspect the output holes on the ends of the case.

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Use a soft toothbrush to clean the speaker mesh. Don't pick with a needle, you can pierce the membrane and completely ruin the sound.

Note the Do Not Disturb or Quiet Mode mode. In Xiaomi's system, these profiles can completely turn off media sounds, leaving only alarms active. Check status in the notification curtain.

• 🔍 Check the side volume buttons and make sure the slider is not at a minimum.
• 🎧 Turn off Bluetooth in settings to exclude audio output to third-party devices.
• 🧹 Clean the speaker mesh from dust and pile with a soft brush.
• 🔕 Make sure that the notification curtain is not activated with the “Do Not Disturb” mode».

Setting up volume mixer and sound profiles

The MIUI shell has an advanced mixer that allows you to control volume for different types of content separately. It often happens that the volume of the call is at its maximum, and the media is twisted to zero. To check this, press the volume button and press the trim or arrow down to expand the menu.

Here you'll see individual sliders for call, media, alarm and notifications. Make sure the media slider is raised. If you reset after rebooting, the configuration file may have crashed.

The sound and vibration settings also have important settings hidden. Go to Settings → Sounds and Vibrations. Check if you have a silent default profile, and check for the "Enhanced Sound" or "Equalizer" section.

⚠️ Attention, in some versions MIUI Turning on the Mi Sound Enhancer feature can cause conflicts with headphone drivers, resulting in a complete absence of sound.

If you use wired headphones, check the settings in the same menu. The system must correctly determine the connection of the jack connector. If the headphones do not switch, the sound may be contaminated, or the train rotted.

Software failures and service reboot

If the physical buttons and settings are in order, there is likely to be a software failure.The Xiaomi-based Android operating system sometimes "forgets" to activate the audio driver after leaving sleep mode or updating the app.

The first and most effective step is to completely reboot the device, not just turn the screen off and on, but to reboot the system, but to clear the RAM and restart all system services, including the audio service.

In some cases, it helps to reconnect the audio device software, so if you have a USB-C or Bluetooth adapter, plug them in, wait for the audio to switch, and then turn them off, and it will force the system to redistribute the audio streams.

It's also worth checking if the phone has a third-party audio control app (amplifiers, equalizers) that can intercept control and block standard output. Try removing such programs or disabling their permissions.

• 🔄 Completely reboot your smartphone (Power) → Reboot).
• 🎧 Connect and disable an external audio device to reset routing.
• 🗑️ Remove third-party equalizer apps if installed.
• 📱 Check if the application that plays the sound is frozen (close it from the menu running).

Bluetooth and peripheral device conflicts

One of the most insidious reasons for the lack of sound is the phantom connection. Your Redmi can be connected to a Bluetooth speaker that's in your bag, or to the car system if you're near the car, in which case the phone sends the sound there, and you hear the silence.

To rule out this option, completely disable the Bluetooth module in the settings, rather than just disconnect the device. Go to Settings → Bluetooth and turn off the switch. If there is a sound, the problem is found.

Also check the list of paired devices. If there are old or unknown gadgets, click on the gear icon next to them and select "Forget the device" or "Disable." This will prevent automatic connection in the future.

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Automatic connection to familiar networks and devices is the main reason for the “lost” sound in the background.

Resetting sound settings and system updates

If simple methods didn’t help, the system files responsible for audio may have been damaged. MIUI doesn’t have a separate “Reset Sound Settings” button, but you can reset all applications or reset network settings, which often helps with data transfer problems, including audio.

Go to Settings → Advanced Settings → Restore and Reset. Select “Reset your Wi-Fi, Mobile Internet and Bluetooth settings.” This won’t delete your personal data, but will return the network modules to their original state, which can eliminate the software conflict.

It is also critical to check for system updates. Xiaomi regularly releases patches that fix audio codec bugs. Go to Settings → About phone and click on the MIUI version. If there is an update, install it.

⚠️ Before performing a full Hard Reset, be sure to back up all important data, as this step will remove all files from your phone.

In rare cases, cleaning the cache of the system application Settings helps. Go to Settings → Apps → All Apps → Settings → Memory → Clear the cache. Don’t confuse it with cleaning up data, it can knock down your personalizations.

Hardware malfunctions and diagnostics

When software is exhausted, you have to talk about hardware. If after a fall, moisture or just over time, the sound disappeared and does not return even after reset, most likely the speaker or the plume connecting it to the motherboard failed.

On Redmi models with plastic body, speaker plumes can move away when impacted. In models with glass body and moisture protection, the problem can be the oxidation of contacts after contact with moisture, even if the phone did not sink clearly.

You can diagnose a breakdown from the engineering menu. Type ##6484## in the call. Select Speaker or Receiver. If you hear a crack, wheezing or silence on the test, the part needs to be replaced.

• 🔨 Check if there have been recent falls or bumps on the body.
• 💧 Check the moisture indicators (usually in the tray) SIM-maps - red indicates the ingestion of water.
• 🎵 Take the test in the engineering menu CIT localize the problem.
• 🔌 Try to slightly press the lower part of the body (where the speaker is) while playing the sound.

If the engineering test has sound, but the applications do not, the problem is in the software. If the test is not anywhere, it is a hardware malfunction that requires a visit to the service center to replace the speaker or plume.

Questions and Answers (FAQ)