Many Xiaomi, Redmi and Poco smartphone owners face a situation where the device is silent at key moments, such as no audio when dialing, quiet notifications or no music in the interface, and most often the problem lies not in the breakdown of the speaker, but in the software settings that have lost or were accidentally changed.
MIUI and its global version of HyperOS offer a ramified audio management structure, with individual sliders for media, calls, alarms and system events. Understanding the logic behind these partitions allows you to quickly return voice to your device. In this article, we'll look at all the possible causes of silence and how to fix them.
We'll look at both standard methods through the settings menu and hidden features for enthusiasts. You'll learn how to activate advanced audio formats and why a simple restart of the audio service sometimes helps. Follow the instructions consistently to find and fix exactly your problem.
Basic diagnostics and checking volume sliders
The first thing to do when you don't have sound is to check the standard volume settings in detail. Unlike many other systems, MIUI-based Android splits the sound levels into several independent categories. Pressing the side volume buttons causes a pop-up menu, but it only shows the current active level.
To get full control, tap the three-point or down arrow in the volume menu. An extended panel will open where you'll see separate scales for call, notifications, alarm clock and multimedia. It's critical to make sure that the Multimedia slider is not in zero position if the problem is video or music.
Sometimes users forget that Do Not Disturb mode can block the interface's sound effects. Check the top notification curtain: if there's a crescent icon on there, the system can ignore incoming calls and system sounds. Turn off this mode for a full diagnosis.
- 🔊 Check if the sound is completely switched off by the volume menu switch.
- 📵 Make sure that the active sound profile is not in "No Sound" mode".
- 🎵 Divide volume settings for different applications in the extended menu.
- ⚠️ Pay attention to connected Bluetooth devices that can intercept audio.
⚠️ Warning: If the volume sliders are grey and do not move, this may indicate a software failure of the AudioServer service or a conflict with a third-party audio management app installed.
Customization of sound effects in the menu Sound and vibration
The main audio control center is in the system settings section. To get there, go to Settings → Sound and Vibration. This is where the switches that are responsible for the audio of the user's actions are located, many of these options are hidden in the sub-menument "Additional settings" or "Sound and vibration".
In this section, you can activate locking sounds, dialing sound, and even charging sounds. The locking sound feature in MIUI is often disabled by default to save battery power, although its impact on power consumption is minimal. Turn it on to hear the characteristic click when the screen is activated.
For users who prefer tactile feedback, the vibration is also set up. However, if your target is audio, make sure the keyboard sound switch is active, which is especially important for those who are used to focusing on sound when typing messages.
☑️ Checking the sound settings
The section on "Sound Quality and Effects" deserves special attention. In newer versions of HyperOS firmware, this section has been significantly revised. Here you can find equalizer and surround sound settings. If the sound seems flat or distorted, resetting the equalizer settings to "Normal" or "Flat" often solves the problem.
Activation of Dolby Atmos and Hi-Res Audio on Xiaomi
Modern flagships and mid-range devices from Xiaomi are often equipped with a license Dolby Atmos. This technology allows you to create a surround sound effect even through the stereo speakers of your smartphone. To use it, go to Settings → Sound and vibration → Sound effects.
In the menu that opens, you'll see the Dolby Atmos switch, and when it's activated, presets like Auto, Movie, Music, Games will be available, and the Auto profile is usually the best choice, because the system analyzes the content and uses the right filters, and this greatly improves the sound perception in the headphones.
This section may also include a Hi-Res Audio switch, which is designed to play high-resolution files without loss of quality, and it is important to understand that this feature requires appropriate headphones and high-quality audio files, and in normal conditions, the difference can be barely noticeable.
| Dolby mode | Description | Recommendation |
|---|---|---|
| Automobile | Automatic profile selection | Recommended for most users |
| Film | Enhancing dialogue and effects | To watch a movie with headphones on |
| Music. | Expansion of stereobe | To listen to tracks |
| Games | Improved positioning of steps | For shooters and competitive games |
Addressing sound problems in specific applications
Often, system sounds work, but in a particular application, like TikTok, Instagram or browser, there is no sound. In the Android ecosystem, each application has its own playback channel. If the system fails, the channel can get stuck in the mute state.
Try running an in-app video, pressing the volume buttons, and making sure that the slider is going up for that particular app, and sometimes switching the output helps: plug in the Bluetooth headphones, play the sound, then turn them off and switch back to the phone speaker, and that will force the audio stream to restart.
In some cases, the problem lies in the application settings themselves. Go to Settings → Apps → All apps, find the problem app and click Stop. Once you restart the app's audio cache, it will clear. It's a safe procedure that doesn't delete your data.
- 📱 Check if the app is worth the data saving mode that blocks media.
- 🔄 Restart the application through the program management menu.
- 🎧 Switch the output of sound from the speaker to the headphones and back.
- ⚙️ Update the app via Google Play or GetApps.
⚠️ Note: If only one application has lost sound after the system update, the problem may be on the app developer's side.
Use of engineering menus and hidden settings
For advanced users, you can check audio modules through the engineering menu, a powerful diagnostic tool that allows you to test the speaker and microphone at the hardware level. To enter the menu, open the Phone app and type in the code ##6484##.
In the CIT (Customer Inspection Test) menu that opens, select the item associated with the sound (usually "Speaker", "Receiver" or "Audio"). Run the test. You should hear the melody. If there is sound in the engineering menu and there is no sound in the system, the problem is purely software. If there is no sound anywhere, there is likely a hardware malfunction.
You can also find the microphone sensitivity settings on the engineering menu, and be careful that changing these parameters without understanding can cause people to stop hearing you, and you'd better limit yourself to testing.
Multiple taps on the build number enable developer options. There you can find the setting "Disable absolute volume level." Turning on this option helps if the volume of Bluetooth headphones is not synchronized with the volume of the phone.
Resetting sound settings and restarting services
If none of these methods worked, there may have been a build-up of errors in the configuration files of the audio drivers, and the easiest way to fix this is to restart the phone, not just turn it off and on, but to reboot it completely, rebooting it, reassembling all the system processes.
A more radical but effective method is to reset your audio settings. There is no such button on pure Android, but in MIUI you can try resetting all your apps or resetting all your settings (not your data!). Way: Settings → About your phone → Resetting → Resetting all your settings. This will return your system calls, alarm clocks and volume to factory values, but it won’t delete your photos and contacts.
In extreme cases, if the problem occurs after installing the update, cleaning the cache of the Google Play service or removing updates to the system application "Sound" (if such an option is available in your firmware version) can help.