How to turn on the locking sound Xiaomi

Xiaomi smartphone owners often face a situation where the device stops emitting a characteristic click or melody when the screen is locked, this can occur after updating the MIUI or HyperOS operating system, as well as as as a result of resetting to factory settings. The lack of an audio lock indication deprives the user of an important tactile and auditory confirmation that the phone is safely closed and in sleep mode.

In most cases, the problem is not hardware breakdown of the speaker, but software constraints or randomly changed system parameters. Modern shells from Xiaomi have a complex menu structure, where the sound settings are scattered across different sections. To return the usual functionality, you need to consistently check several key points in the device settings.

In this article, we’ll look at all the possible ways to turn on Xiaomi’s lock sound, from basic audio settings to hidden engineering menus, learn how to distinguish between system and interface sounds, and learn why this option may not be available by default on some global firmware versions.

Basic sound and volume settings

The first step in solving the problem is to check the standard volume menu. Often users inadvertently reduce the level of system sounds to a minimum, trying to quiet the ringtone or music. To do this, press any volume button on the side of the case, and then tap the tripod or setting icon on the scale that appears.

In the menu that opens, you'll see several sliders, each of which is responsible for its own audio type. We're interested in System Sounds or Interface Sounds. It controls keyboard clicks, lock sounds and other system notifications. Make sure that the slider is raised at least by a single keyboard. 30-40%.

• 🔊 Press the side volume button and select the menu extension.
• 🔊 Find the Slider System Sounds and increase its value.
• 🔊 Check if the Do Not Disturb mode is activated, which can block the interface sounds.
• 🔊 Restart the device to apply changes.

It’s worth noting that on some models, such as the Redmi Note or Poco F, the system sound slider can be combined with the volume of the alarm clock or multimedia depending on the Android version.If you can’t find a separate controller, try playing the test sound right in the settings menu.

⚠️ Note: If the system slider is active but there is no locking sound, the problem may be the chosen theme. MIUI Do not contain audio files to lock the screen.

Sound and vibration settings in MIUI

The deeper tuning is done through the main menu of the device parameters, where you can not only adjust the volume, but also select specific melodies for different events of the system. Go to Settings → Sounds and vibration.

In this section, find the option option under Settings or System Sounds. Depending on the shell version, the path may vary slightly. On older versions of MIUI 12-13, the option is often hidden inside the Lock Sound menu, whereas in newer HyperOS, it is placed in a separate subsection of sound effects.

If you have a "lock screen sound" switch on the menu, make sure it's activated. You can also select a specific audio file to play. The standard set usually includes short digital clicks or soft tones.

It is important to understand the difference between notification sounds and system sounds. Notification sounds are associated with applications and messages, while system (or interface) sounds are responsible for user actions, such as pressing navigation buttons or locking the screen.

Advanced settings of special features

Sometimes, the functions associated with audio actions are transferred to the section for people with disabilities, this is done to help users with visual impairments better navigate the interface of the smartphone. Go on the path of Settings → Advanced settings → Special features.

In the list of available services, find a section associated with Hearing or Audio Indication. This may include a "Touch Sounds" or "Action Voice" switch, which activate these functions often forcefully turns on system sounds, including locking sound, even if they were disabled in the normal menu.

Be careful, though: Enabling some features like TalkBack can completely change the logic of your device management, and if you have enabled the feature and you don’t need it, be sure to turn it off after checking the lock sound.

The influence of design themes and sound schemes

MIUI and HyperOS are known for their deep customization through the Themes app. Users often install third-party designs that completely change the visual style and soundtrack of the system. The problem is that many free or modified themes do not contain a full set of system sounds.

If you have recently changed a topic, try going back to the standard theme "Classic" or "No Limits." To do this, go to the Topics → Profile → Topics app and select the standard option. After applying the theme, check if the lock sound appears.

It's also worth checking the sound circuit settings inside the theme itself. Some themes allow you to customize system sounds, locks and unlocks separately. If there's no lock file in the theme, the system can simply remain silent, ignoring the general volume settings.

• 🎨 Open the "Themes" app on the desktop.
• 🎨 Go to the user profile and select "Subjects".
• 🎨 Click on the standard theme (usually the first one on the list).
• 🎨 Click "Apply" and wait for the interface to reboot.

⚠️ Note: When using themes from third-party developers (not from the official Xiaomi directory), the lock sound may be missing due to the lack of the corresponding audio file in the theme package.

💡

Before installing a new topic, always check its description: if the author does not mention the presence of system sounds, it is better not to take risks and stay on the standard design.

Engineering menu and hidden settings

For advanced users who are confident in their actions, there is the possibility of checking the sound paths through the engineering menu, which is a hidden part of the system, designed for testing equipment, accessed through a set of special code in the Phone application.

Enter the code.

##6484##

##4636##

MIUI

CIT

Speaker

Audio

If the engineering menu is playing the lock test sound, then the speaker is working, and the problem is purely software in the user interface, and if the sound is not even in the engineering menu, it may be damaged software module audio driver.

💡

The engineering menu is a powerful diagnostic tool, but changing unknown parameters inside it can cause the phone to function unstable. Use only for testing.

It should be remembered that on global firmware versions, some tests may be restricted compared to Chinese versions, and this is done for the safety of ordinary users.

Problems after updating and resetting settings

Often, the absence of lock sound is observed immediately after the operating system update. During the migration of data, old configuration files may conflict with the new HyperOS settings. The system may “forget” to activate the default settings.

In such cases, cleaning the cache of the system application "Settings" or "Sound" helps. Go to Settings → Apps → All applications, find in the list "Settings" (or "Sounds"), click Clear → Clear cache. Don't confuse "Clear all data", as this will reset all your phone settings.

If nothing works, the last resort is a full factory reset, make sure to back up your important data before you do it, and when you reset, the phone will go back to the "out of the box" state, and all system sounds, including locking, should work correctly.

• 🔄 Go to Settings. → The phone. → Resetting settings.
• 🔄 Select "Erase all data".
• 🔄 Wait for the reboot and initial setup.
• 🔄 Check for lock sound before installing third-party apps.

⚠️ Warning: Full reset deletes all photos, contacts and apps. Make sure your Mi Account is synced and important files are saved in the cloud or on your computer.

Frequently Asked Questions (FAQ)