Smartphone personalization is not just a matter of aesthetics, but a way to make the device truly your own. Xiaomi, Redmi and Poco smartphone owners often face the desire to change standard system sounds that can seem intrusive or just boring, especially the lock-screen sound we hear every time we turn off the display or wake up the device.
Unlike some other manufacturers, Xiaomi provides users with flexible tools to manage audio files, but in the latest versions of the MIUI shell and the new HyperOS, some settings have been hidden or moved, which creates the illusion of complexity, although in fact the process of replacing the melody is quite simple if you know the right sequence of actions.
In this article, we will discuss in detail all the available ways to change the lock sound, from standard system settings to using third-party applications and file managers. You will learn to install your own tracks, edit their duration and solve typical problems when the selected melody is not played or reset after a reboot.
Standard sound settings in MIUI and HyperOS
Start with a basic method that doesn't require any additional software. The built-in shell functionality allows you to choose from a pre-installed list or add your files through the system theme menu. To access these settings, you need to go to Settings, then select Sound and Vibration, and that's where the basic audio output options are concentrated.
Inside the sound menu, you're interested in the Additional Sounds section or the Screen Lock Sound, which can vary depending on the firmware version. The system offers several built-in options, from quiet clicks to more noticeable tunes. If the standard set doesn't suit you, the interface allows you to go to the GetThemes store or select a file from the device's memory.
It’s worth noting that new versions of HyperOS have made sound logic more integrated with the themes, meaning that changing the sound package can happen automatically when you install a new theme, which sometimes confuses users who are used to static settings, so if the sound is gone or changed on its own, check the active theme in the Themes app.
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If you can’t find the “locking sound” item in the main settings, use the search by settings: type the word “lock” or “sound” in the search bar, and the system will redirect you to the desired section.
It is important to understand the difference between the locking sound and the notification sound: the first is played when the screen is mechanically or programmatically closed, the second when messages are received, and the confusion in these terms often leads to users changing the settings they planned.
Using the Themes app to change audio
The official Themes app is the central hub for customizing the interface on Xiaomi devices, where you can find not only wallpaper and icons, but also entire packages of system sounds. To replace the lock sound through this service, open the app and go to the Sound or Audio tab in the bottom navigation menu.
There are thousands of free and paid options available in the directory. You can filter them by popularity or novelty. After selecting the right audio file, click Download and then Apply. The system automatically replaces the current lock sound with the one you choose. The good thing about this is that the files are already optimized for duration and volume.
- 🎵 Open the Themes app on the home screen or in the Tools folder».
- 🔊 Go to the “Sounds” section through the bottom navigation bar.
- 📥 Find your favorite track and click “Download”, wait for the process to end.
- ✅ Click "Apply" to activate the new lock sound.
However, there are limitations to this method: The files from the store are digitally protected and tied to your Mi Account. If you decide to reset your phone or change region, access to the sounds you bought or downloaded may be lost. Also, not all the sounds from the store are suitable for locking the screen — some are only for calls or notifications, which requires careful examination of the description.
Install your own tune through the file manager
The most flexible way is to use your own audio file. You can download any track in MP3 or M4R format and set it as system sound. To do this, the file must be stored in your smartphone memory. Open the standard File Manager application and find the downloaded file.
Once you have found the audio file, click on it and hold your finger to highlight. In the context menu that appears, select Use as or Still, and then Lock Sound. If that option is not directly available, you can go another way: copy the file to a special system folder.
/MIUI/sound_lock/By placing a file in this directory (or creating one if it is missing, although in modern versions of Android this is often done automatically when selecting a file), you ensure that the system recognizes the track as available for installation.
☑️ Checking before setting the melody
Technical limitations must be considered. The lock sound must not be too long, otherwise it will crop or sound incorrect. The optimal duration is from 1 to 3 seconds. It is also important that the file is not copyrighted by DRM, since the system player will not be able to play it.
Comparison of sound installation methods
Each of these methods has its advantages and disadvantages, and to make it easier for you to choose the right option, we have prepared a comparative table that will help you quickly navigate according to your goals and level of training.
| Method | Difficulty | Flexibility | Risks. |
|---|---|---|---|
| Standard settings | Low. | Minimum | Absent. |
| Annex Topics | Low. | Medium | Account dependency |
| Your file (MP3) | Medium | Maximum | Possible format errors |
| Third-party annexes | Tall. | Tall. | Advertising, access to data |
As you can see from the table, for most users, the optimal balance between quality and simplicity is the use of their own file or official themes. Standard settings are good for conservatives who do not want to change anything, while advanced users will appreciate the possibility of fine-tuning through external files.
On Android 13 and 14, the HyperOS shell can have stricter restrictions on applications’ access to system audio files, making standard methods more preferable for stable operation.
Reproduction problems and their solution
Often users are faced with a situation where seemingly everything is done correctly, but the sound does not change or is played with errors. One common reason is the Do Not Disturb mode or the silent mode on, in which case the system ignores the locking sound settings so as not to disturb the user.
⚠️ Warning: If the sound is completely gone after installing the new melody, check if the Do Not Disturb mode is activated and if the system volume slider is in the lowest position.
Another problem is file formats. Xiaomi works best with the AAC codec in a.m4r or.mp3 container with a bitrate of no higher than 320 kbps. If you downloaded a track in FLAC or WAV format, the system may not recognize it as system sound, in which case you need to convert the file.
How to convert audio to Xiaomi?
Also worth mentioning are the bugs of a particular firmware version, sometimes after updating MIUI, the sound settings can “fly off”, in which case it helps to clear the cache of the Settings application or completely reset the sound settings to factory values, followed by resetting the melody.
Use of third-party applications for advanced users
If standard tools aren't enough, Google Play Store apps come to the rescue, and programs like Zedge or Silent Ringtone Maker allow you to not only download sounds, but also edit them: crop, add fade effects, and change volume, especially to create the perfect lock sound.
When using third-party software, you need to be careful with permissions. Many applications require access to all files on the device, which may not be secure. Try to use only proven programs with high ratings and a lot of reviews.
- 🛠 Zedge – a huge catalog of sounds and tools for trimming them.
- ✂️ Ringtone Maker – allows you to cut the right snippet from any song.
- 🔊 Volume Control – allows fine volume settings for system events.
After you edit the track in a third-party app, there's usually a "Install As" button. Select the screen lock sound, and the app will move the file to the desired system folder and apply the settings, which eliminates manual tinkering with the file system.
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Third-party apps are the best choice if you need to create a unique sound from a song snippet that isn’t available ready-made in standard libraries.
Remember that installing too many personalization apps can slow down your smartphone. Once the sound is installed successfully, it is recommended to remove the used editors, leaving only the result.