Many Xiaomi smartphone owners use two numbers at once, separating work and personal calls, but face confusion when incoming calls. Standard setup often involves a single track for all contacts, which creates inconvenience when you need to instantly know who is calling without taking the phone out of your pocket. This problem can be solved if you correctly configure personalized ringtones for each SIM card and specific subscribers in the system. MIUI or hyperos.
In this article, we'll go into detail about the algorithm of actions that will allow you to differentiate incoming calls. SIM-maps, customize individual tracks for selected numbers and eliminate typical errors that occur when working with multimedia files in the shell of Xiaomi.
The flexibility of setting up audio notifications is one of the strengths of Android smartphones, but hidden menus and features of the file system can confuse the inexperienced user. We will look not only at standard methods through the settings menu, but also at advanced ways to manage audio files through the file manager.
Basic setting of ringtones for SIM-map
The first step to personalizing your smartphone is to separate the tunes directly for the SIM cards, a foundation without which further fine-tuning the contacts will make no sense, as the system must understand which track to play by default for each communication line. In modern versions of MIUI, this process has become more intuitive, but requires careful choice of sound source.
To start, you need to go to the main settings menu of the device and find the audio section, which is usually hidden in the Sound and Vibration section, where the volume sliders and the selection of system themes are located, and this is the key switch that allows you to divide the audio streams for the first and second SIM card.
Find the Rington string (or Call Melody). Unlike older versions of Android, here you will see two separate lines: one for SIM 1, the other for SIM 2. By clicking on each of them, you open a standard track selection player where you can select a preset melody or download your file from the device's memory.
- 🎵 Press Ringtone. SIM 1 and select a track from the list or press the button «+» file-in.
- 📱 Repeat the procedure for Ringtone. SIM 2, choosing a contrasting melody to easily distinguish lines.
- 🔊 Check the work by making a test call from another number to each of the SIM cards separately.
⚠️ Warning: Make sure that the selected audio file is not protected by rights DRM (digital rights, otherwise the system will not be able to use it as a system call and will issue an error when trying to install the system.
Once you do this, your smartphone will automatically detect which line the call is coming to and play back the track, a basic level that makes life much easier, but it's worth going further for complete control of the sound environment.
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Separating ringtones at the level of SIM cards is the first and mandatory step for comfortable use of two numbers, allowing you not to confuse business and personal calls.
Personalization of calls for specific contacts
Customizing individual tunes for specific subscribers is the ultimate aerobatics in notification management. Imagine hearing a unique tune and already knowing that your boss, spouse or courier is calling without even looking at the screen. Xiaomi's shell has a powerful mechanism for binding audio files to phone book entries.
The process starts with opening the Contacts or Phone app, and you need to find the right subscriber on the list and go to their card, and that's where the detailed description of the contact hides the advanced settings, including the possibility of assigning a special ringtone that will interrupt the overall mood of the SIM card.
In the contact card, find the default Melody (or simply "Rington"). By clicking on it, you'll be taken to the same selection of tracks as in the general settings. Choose a unique file for that person.
If you want to assign different tunes to different numbers of the same contact (e.g. mobile and work), the system can suggest choosing which number to attach the sound to. In some versions of HyperOS, this is implemented through the “More” menu in the contact card, where you can edit the properties of each number separately.
- 👤 Open the contact card in the phone book.
- 🎼 Click on “Default Melody” and select a unique track from the sound gallery.
- ✅ Save the changes by clicking “OK” or ticking in the corner of the screen.
This detail allows you to create a véritable sound map of your surroundings, so you stop responding to every call, and you know the priority of the call before you even look at the display.
Work with files and audio format
The quality and compatibility of audio files are critical to the stability of a call. Not all formats that play well in a music player are suitable for use as a system ringtone. Android and MIUI have their own preferences and limitations on codecs and bitrate.
The most universal and recommended format is MP3 with a bitrate of 128 kbit / s to 320 kbit / s..ogg or.wav files are also supported, but can take up more space or have problems with metadata. If you downloaded a ringtone from the Internet and the system does not see it or reproduces it with distortions, most likely it is the codec or a corrupted file header.
While modern versions allow you to select files from any directory, creating a separate Ringtones folder at the root of internal memory or in the MIUI/sound folder will help the system index new tracks faster and display them in the selection list.
Storage folder: /internal_storage/Ringtones/
Recommended format: MP3, OGG
Recommended bitrate: 128-320 kbpsAlso worth paying attention to the length of the track. Too long tracks can be cut by the system or cycle incorrectly. The optimal ringtone duration is 15 to 30 seconds, which is enough to identify the caller ID, but does not annoy others if you did not have time to respond.
⚠️ Note: Files downloaded from messaging apps (WhatsApp, Telegram) often have temporary names and can be deleted by the memory cleanup system, so copy important ringtones to a separate secure folder.
Use of built-in audio player and themes
In the Xiaomi ecosystem, there is a separate app called Themes, which is a centralized hub for customizing the interface, including sounds, and many users ignore this resource, relying only on local files, but there are thousands of professionally processed ringtones, optimized specifically for the speakers of smartphones of this brand.
In the Themes app, go to Melodies (or Sounds) and have a huge library of classic calls to popular tracks, and the advantage of using this directory is that the files are already compressed and configured correctly, ensuring they run smoothly without wheezing or delays.
In addition, some themes contain their own sets of sounds, and when you install a new theme, the system can suggest replacing the current system sounds with those that come with the theme, which is a quick way to completely change the acoustic appearance of a smartphone, making it unique.
- 🎨 Open the “Themes” app on your desktop.
- 🔍 Go to the Melodies tab and use a search by genre or mood.
- ⬇️ Download your favorite track and click "Apply" by selecting SIM-map.
Using embedded resources is especially relevant if you don't want to waste time searching and converting files manually.The directory is regularly updated, adding current hits and seasonal sounds.
Hidden system sounds
Comparison of Ringtones Installation Methods
There are several ways to set a tune on Xiaomi, and each has its advantages and disadvantages depending on your goal. Understanding the differences will help you choose the most effective method for your situation.
Below is a table comparing the main methods of setting up calls for the second SIM and for contacts.
| Method | Difficulty | Flexibility | Recommended use |
|---|---|---|---|
| Through the sound settings | Low. | Basic (SIM only) | Quick Separation Separation of SIM 1 and SIM 2 |
| Through the Contact Card | Medium | Tall (individually) | Set up calls for important people |
| Through the Topics app | Low. | Medium (catalogue) | Search for quality, ready-made tracks |
| Through the File Manager | Tall. | Maximum | Using your own MP3 files |
As you can see from the table, the most direct and reliable method for the task of "call on the second SIM" is the use of system audio settings. However, for deep personalization, you will have to combine methods using a file manager to download tracks and a contact card to link them.
The choice of method also depends on the version of Android. On older versions (Android 10 and below), the file system was more open, and direct access to Ringtones folders worked seamlessly. In new versions (Android 12/13/14), access rights are limited, so using the built-in player of choice (through settings or contacts) becomes preferable, since the system itself requests the necessary permissions.
Addressing common problems
Even with strict follow-up, users may encounter situations where the ringtone is not playing, resetting to a standard or playing for the wrong SIM card, most often the problem lies in the cache of the Phone or Contacts app, which stores outdated data about the audio settings.
The first thing to do when crashes is clear the cache. Go to Settings → Apps → All apps, find Phone and Contacts, select Memory and click Clear Cache. This won't delete your contacts, but will update the audio binding database.
The second common problem is the quiet call or no call when the phone is in your pocket, which may be due to the Pocket Mode feature or the intelligent recognition that silences the sound if the proximity sensor is closed. Check the settings in the Sound and Vibration section → Additional.
☑️ Diagnostics of Sound Problems
It's also worth checking the permissions of the Themes app or file manager, if they don't have access to media files, they won't be able to transfer the ringtone to the system library, go to the application settings and make sure that permissions to read memory are issued.
⚠️ Warning: If ringtones are missing after resetting or updating the firmware, this is normal security behavior – personalized settings often fly off and need to be reset.
In rare cases, the problem may be hardware or related to a particular version of MIUI firmware. If nothing helps, try installing a third-party ringtone management app from Google Play that has deeper access rights and can force the desired track to be logged into a database.
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Use voice recorder apps with cropping function to quickly create the perfect ringtone from a voice message or song snippet right on your phone.