Smartphone personalization is not just about changing desktop wallpapers, it’s about creating a comfortable environment for everyday use where every sound signal matters. For Xiaomi device owners running MIUI or HyperOS shells, being able to differentiate incoming calls becomes critical, especially when using two SIM cards at once. Separating calls allows you to instantly know who is trying to contact you — a business partner, a relative or a courier service without looking at the screen.
Standard settings often offer only a global tune, but modern smartphones of the Chinese brand provide advanced opportunities for fine configuration of audio profiles. In this article, we will discuss in detail the algorithm of actions that will allow you to assign unique ringtones for each of the SIM cards, as well as for individual contacts from the phone book, which will eliminate unnecessary fuss and help you respond to really important calls faster.
The setup process may seem confusing due to the deep nesting of the menu in the Android system, however, it will only take a few minutes to execute the steps sequentially.We will look at both standard methods through the system menu, and more advanced methods if the standard path is not available due to the features of the firmware version. Xiaomi constantly updates the interfaces, so it is important to understand the principle of operation, not just mechanically pressing buttons.
Why you need to separate melodies for two SIM cards
Using two numbers in a single device has long been the norm for separating work and personal contacts or saving on tariffs from different operators. However, this convenient feature creates an auditory identification problem: when a call is made, the user often does not know which line he is coming from until he picks up the phone.
Also, separating melodies helps in situations where one of the numbers is for rare or specific purposes, such as checking in with banks or delivery services. If the "working" SIM is loud and intrusive ringtone, and the "personal" is a calm melody, you can ignore unnecessary calls, even without taking your smartphone out of your pocket, which increases productivity and reduces stress from constant information noise.
Importantly, MIUI allows you to flexibly adjust not only the ringtone, but also the vibration and behavior of the notification indicator for each SIM card separately, creating a comprehensive alert profile that cannot be ignored or, conversely, remains invisible to others depending on your needs.
Preparation of audio files and format requirements
Before you start setting up, you need to make sure you have the right audio files. The Android system that underpins MIUI has strict requirements for formats and file location, failure to comply with which will result in the melody simply not appearing on the selection list. The most versatile and supported format is MP3, which is readable by all firmware versions without additional conversions.
Files must be placed in the correct directory of internal memory of the smartphone. Although new versions of the shell can scan all memory, the most reliable place ringtones in a specially designated folder called Ringtones. If you don't have one, you can create it manually through any file manager at the root of the internal memory. MIUI/ringtone, where the system often adds standard sounds.
Technical requirements for audio files
Pay attention to file names: avoid using special characters or too long names in Cyrillic, as in some older versions of the system this may lead to mapping errors in the list, work_call.mp3 or family.mp3.
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Use online services or editorial apps to crop your favorite song to 15-20 seconds, leaving only the most recognizable snippet. Long introductions can be annoying if you miss calls often.
Setting up ringtones through the system menu
The main and most reliable way to set different tunes for SIM cards is in the depth of the system settings. The path may vary slightly depending on the version of MIUI, but the logic remains the same. First, open the Settings app and find the Sounds and Vibrations section. This is where all the parameters related to the audio of the smartphone work are concentrated.
Inside this section, you need to find the "Call Melody" item. Unlike older versions of Android, here the system will immediately prompt you to choose which SIM card you want to change the sound for. Once you select SIM 1 or SIM 2, you will open a standard file manager or a list of system tunes where you can specify the previously downloaded file.
The selection process is as follows:
- 📱 Click on the melody selection point for the first SIM card.
- 📂 In the window that opens, select “Files on your device” or “Local storage".
- 🎵 Find the Ringtones folder and select the track you want.
- ✅ Confirm your choice by clicking “OK” or ticking in the corner of the screen.
Once you do this for both SIM cards, the system will apply the changes instantly, and now when you call in, you will hear the track you assigned.
☑️ Checking the sound settings
Alternative method through the phone application
If you have difficulty accessing system settings or the interface seems too complicated, you can use a faster route through the standard Phone app, which is especially convenient because it allows you to customize your tunes on the fly without wandering through the deep settings menu. Open the green handset app, which is usually in the dock bar at the bottom of the screen.
In the upper right corner, click on the menu icon (three dots or gear) and select Settings. Next, look for Incoming Calls or Call Melody. Here you will see the SIM-based separation, similar to the system menu, which often works faster and avoids unnecessary transitions, which is valuable for users accustomed to time optimization.
In some versions of the HyperOS shell, the path can be slightly changed: first, you select the SIM card in the main settings menu of the phone, and then you assign a sound. If you do not see the desired item, try searching by settings by typing "melody" or "ringtone".
⚠️ Note: If the sound is unchanged and remains standard after selecting the file, check the phone app's access rights to the storage. Without permission to read the files, the system will not be able to play the track you choose.
Individual settings for contacts
In addition to SIM-card separation, the system allows you to assign unique tunes to specific contacts, which works on top of the SIM card settings: if a contact with a personal ringtone ringtone ringtone ringtone ringtone rings, you will hear it, regardless of which SIM the call came to. To do this, open the Contacts or Phone app and find the desired entry in the list.
In the contact card, find the "More" button (often hidden behind a tripod) or "Call melody" immediately. The system will suggest selecting a sound from a list or downloading a new one, which is the perfect way to track calls from the most important people - family or management, even if the phone is lying down screen or in the bag.
The table below shows the priorities of sound playback in Xiaomi’s system:
| Type of setup | Priority | Description of action |
|---|---|---|
| Don't disturb mode. | High (Blocks) | Prohibits all sounds except selected contacts |
| Contact melody | High-pitched | Override SIM card settings for a specific number |
| Melody. SIM-map | Medium. | Applies to all other incoming calls to this line |
| Global melody | Low. | Used by default unless otherwise specified |
This creates a hierarchy where personal settings are always more important than general settings, giving the user full control over the audio space of their device.
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Personal contact melody always takes priority over SIM card settings, which allows you not to miss a call from an important subscriber even in a noisy environment.
Troubleshooting and troubleshooting
Despite the system's cleverness, users may encounter situations where settings are not saved or tunes are not played, and one of the common reasons is the Silence of Unknown Numbers function. If it is activated, calls from numbers that are not in your phone book will go without sound, which may be mistaken for a failure of the SIM card settings.
Third-party themes downloaded from Themes store often contain their own sound sets that can block the ability to select user files, in which case it is recommended to temporarily return the standard theme "Classic" or "Default" and check the sound performance.
It’s also worth checking the power saving settings. Aggressive battery saving algorithms in MIUI can kill media playback processes, especially if the melody file is in the messenger cache or time folder. Moving files to the Ringtones root folder usually solves this problem.
⚠️ Note: If you use a Bluetooth headset, make sure that the Bluetooth settings allow media audio to be transmitted.Sometimes the ringtone goes through the phone's speaker and media files (if the melody is recognized as media) try to go to the headset, creating confusion.
Additional features of sound personalization
Xiaomi’s functionality is not limited to simple installation mp3-In the theme store and through special applications, you can create complex sound profiles, where not only the melody changes, but also the vibration pattern, and even the visual design of the call screen.
Users can create automation scenarios, for example, using the Auto Tasks app, you can configure the rule: "If the time is 9:00 to 18:00 and the day of the week is weekday, then for SIM 2 you can set the melody 'Office', and for SIM 1 you can set the phone to 'No Sound'" This allows you to automatically switch the phone to working mode without human intervention.
Also worth mentioning is the Smart Speaker feature, which means that if you hold your phone to your ear during an incoming call, the volume of the melody will automatically decrease so as not to stun the user, which works independently of the chosen melody and is part of Xiaomi’s system optimization.