Smartphone personalization is not just a way to stand out, but also an effective tool for managing incoming calls. Xiaomi Redmi 9 owner often faces the need to separate work and personal traffic, and install unique tunes for each. SIM-And the standard Android settings allow you to flexibly manage sound notifications, but the shell interface is a key solution. MIUI It has its own characteristics that require attention.
Owners of dual-sim devices know that hearing a standard beep, you can not know who is calling, boss or friend. Individual ringtones solve this problem instantly, allowing you to respond to calls as a priority. In this article, we will discuss in detail the process of tuning the sound for SIM 1 and SIM 2, and also consider the nuances of the file system in modern versions of MIUI.
The Redmi 9 setup process does not require superuser rights or complex third-party software. All the necessary tools are already built into the system, but hidden in a menu that is not always obvious at first glance. Android operating system based on MIUI 12 or later requires a certain sequence of actions to ensure that changes are applied correctly.
Preparation of audio files for installation
Before you start changing system settings, you need to make sure that the audio files themselves are ready to use. Android has strict requirements for formats and file location, ignoring which will lead to the fact that the desired melody will simply not appear in the list of available. Most often users find that the downloaded track is in the Downloads folder, but the system does not see it.
For Xiaomi Redmi 9, the best format is MP3 with a bitrate of at least 128 kbit / s, which ensures good sound quality without undue load on the processor during playback. FLAC or WAV, They are also supported, but they can take up more space and load more slowly into the memory of the call buffer. DRM-the system will block its use as system sound.
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Use audio files that are no longer than 30-40 seconds for ringtones so that the caller ID can be displayed before the music starts, and the track does not break off abruptly when you reset the call.
There is a common misconception that files must be moved to hidden system folders. In fact, modern versions of MIUI allow you to select tracks directly from user directories if they are located in the root of internal memory or in the standard Music pack. However, to ensure that you display in the list of "Calling Melodies", you should put files in a special directory Ringtones.
If you're using a Google file manager or Xiaomi's built-in Explorer, it takes less than a minute to navigate the folders,"Work_Call.mp3" and"Family_Call.mp3", This action is the foundation for further customization, and without it, the melody selection menu will remain empty or contain only standard system sounds.
Access to audio settings in MIUI
The MIUI shell interface on Redmi 9 may be different from stock Android, which often confuses new users. To find the right section, you need to open the main settings menu, which is indicated by the gear. Here we are interested in the unit responsible for media and notifications, but the path to it can vary depending on the firmware version.
Most of the time, the algorithm is like this: go to Settings, then select Sound and Vibration, and that's where all the parameters are about volume, vibration, and most importantly for us, the ringing melodies, and in this section you'll see volume sliders and a list of preset themes, but we need to go into the details.
Notice the top of the screen in the Sound and Vibration section, which often has a switch or tab that allows you to select the mode of operation of the phone, but to adjust it. SIM-We're going to need to scroll down to the "Melody" section, and in some firmware versions, this item might be called "Rington" or "Calling Melody".
An important nuance: if you have Do Not Disturb mode enabled or an automation scenario (e.g., Meeting or Night) activated, the call settings may not apply until these modes are turned off. Make sure the phone is in standard operating mode before making changes to the audio accompaniment of calls.
Setting up the ringtone for the first SIM-map
After you go to the melody selection menu, the system will prompt you to assign a sound to specific SIM cards. On the Redmi 9 screen, you will see the separation: "SIM 1" and "SIM 2." This distinction is made specifically for users who use two communication lines at the same time.
The default sound list will be Xiaomi system tunes like "Mi Pop," "Over the Horizon," and others. To select your file, you need to click on the "Select local ringtone" button or the plus icon located at the top or bottom of the screen, and the system will open the file manager where you need to find previously prepared audio files.
☑️ Checking the settings SIM 1
When selecting a file from internal memory, make sure you are in the correct directory. If you have moved tracks to the Ringtones folder, they will appear at the top of the list or in a separate category "User". Once you click on the desired file, the system will prompt you to listen to it and confirm the installation.
Once you confirm the selection, Xiaomi Redmi 9 will save this setting only for incoming calls to the first number. Now, when someone calls this SIM, you will hear this track. This allows you to instantly identify the caller ID without even taking the phone out of your pocket.
Setting up the ringtone for the second SIM-map
The process of setting up the second SIM card is almost identical to the first one, but it takes care not to confuse the destination. Go back to the Sound and Vibration menu and again select "Call Melody." This time your choice should fall on the "SIM 2" line.
The system will again offer a list of standard sounds. Repeat the procedure: press "Select local ringtone" and go to the file system. Here, it is important to choose a file that is different from the first one, so that the idea of separating calls is realized, for example, if the first SIM is set to a calm classic track, the second can install a more energetic one.
Some users prefer to use the same tune but with different vibration settings. On Redmi 9, this is also possible: in the same menu where the sound is selected, there is often an option "Vibration". By clicking on it, you can create a unique vibration pattern for the second SIM, which, combined with the same ringtone, will still let you know which line is active.
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A unique combination of sound and vibration for each SIM-Cards are the most reliable way to avoid missing an important call in a noisy environment.
Once the choice is confirmed for the second SIM, the settings take effect immediately. No device restart is required. Now your smartphone responds to calls in a differentiated manner, which greatly improves the comfort of using the device in everyday life.
Use of Third-Party File Managers
The standard file selection interface in MIUI can sometimes be limited or inconvenient, especially if your music files are scattered across different folders. In such cases, third-party file managers such as File Manager+, ES Explorer or Solid Explorer come to the rescue.
However, consider the security features of Android 10 and above, which runs Redmi 9. The system restricts applications to certain system folders. If the standard selector does not see your track, try moving it to the root folder of internal memory or to the Download directory, then try again to select through the audio settings.
There are also specialized ringtone management apps available on Google Play that automatically scan memory for audio files and allow you to assign them to contacts or contacts. SIM-One-click maps, like Ringtone Maker or Zedge, which not only provide libraries of sounds, but also edit tracks, cutting off the right part.
| Parameter | Systemic choice | Third-party manager | Specialized annex |
|---|---|---|---|
| Access to files | Limited to Media folders | Full access to the system | Audio formats only |
| Convenience | High (built-in) | Medium (installation required) | High (automation) |
| Editing | No. | Depends on the app. | Built-in editor |
| Security | Maximum | Requires permits | Requires permits |
Solution: If the melody is not set
Despite the simplicity of the procedure, users sometimes encounter situations where the selected tune is not installed or reset to a standard.One of the most common reasons is the file format. Make sure the file extension is indeed.mp3,.ogg or.wav. Files with the.m4a extension (from iTunes) may not be supported without conversion.
Another common problem is access rights. If you use an antivirus or memory cleaner, it could block the system audio files from changing. Check the permission settings for the Settings or Sound app in the Applications → All Apps → Settings → Permissions.
⚠️ Note: Do not try to rename system files in the folder /system/media/audio/ringtones This can result in a cyclical restart of the device (bootloop) or loss of all audio notifications.
It is also worth checking whether the contact from which the test call is made has an individual ringtone. MIUI priority is to set up a specific contact, then set up SIM-If you have a phone book number that has its own sound, the SIM settings won't work for it.
Why does the setting reset after the reboot?
Additional features of sound design
Customizing different tunes to SIMs is just the tip of the Redmi 9 iceberg of capabilities. The MIUI shell allows you to assign unique sounds not only to calls, but also to notifications from specific applications, SMS and even calendar events, creating a truly personalized sound environment.
You can set different sounds for messages from different messengers if the application supports this feature, or use automation scenarios. For example, at night, both SIMs can only receive a quiet signal, and during the day, a loud one. All this is configured in the Settings → Sound and vibration → Do not disturb mode schedule.
Using high-quality, ear-pleasing melodies reduces stress from constant notifications. Xiaomi Redmi 9 has a powerful enough speaker to play complex musical compositions with good bass, so it is worth experimenting with different genres and track lengths.