Call personalization: different tunes for two Xiaomi Poco X3 SIM cards

Modern smartphones like the Xiaomi Poco X3 have long been powerful multimedia hubs where personalization plays a key role in creating a user-friendly environment. Many dual SIM card owners face the need to quickly determine which number an incoming call is coming to without taking the phone out of their pocket. The ability to set unique tunes for each SIM card is not just an aesthetic fad, but a functional necessity for those who share work and personal contacts.

With MIUI, which is based on Android, the audio customization process can seem confusing due to the deep adoption of branded shells. Standard settings often offer a single track for all incoming ones, which creates confusion when the phone is lying down. In this article, we will detail the algorithm of actions that will allow you to assign unique ringtones for SIM 1 and SIM 2 using the built-in system tools and file manager.

It is worth noting that the successful implementation of the plan depends on the correct preparation of audio files. Android has strict rules for accessing the file system, especially in new versions, so it is important to understand where to download tracks. We will consider not only the standard path through the settings menu, but also alternative methods that can be useful if the standard interface behaves unexpectedly.

Preparation of audio files and understanding of formats

Before you start directly setting up calls, you need to make sure that your audio files meet the requirements of the system. Xiaomi Poco X3 is great at playing different formats, however, for system ringtones, the MP3 format is the most optimal and stable. Using less common codecs can lead to the fact that the track simply does not appear in the list of available tunes or will be played with errors.

Sound quality matters, too, but it's important not to overdo it. Too heavy WAV or (lossless) files can put a lot of pressure on the call, although the current Snapdragon processors installed in Poco X3 can handle this easily. The main requirement is that the file must be stored in the device's memory, not just in the cloud, because without the Internet, the system will not be able to download the track for playback.

Special attention should be paid to the duration of the track. System restrictions often recommend using segments up to 30-40 seconds. If you install a long composition, it can be cropped or reproduced incorrectly when repeated calls.

• 🎵 Optimal file format for ringtones — MP3 bitrate 128-320 quid.
• ⏱️ The recommended duration of the track should not exceed 40 seconds for stable operation.
• 📂 The file should be stored in the phone’s local memory, not on a remote server.

Standard method of setting up through the contact menu

The easiest and most commonly used way to set different tunes is to use the built-in Contacts or Phone app, which allows you to attach a specific sound not only to the SIM card, but also to a specific subscriber, but we will focus on the overall setting for each SIM card. In the MIUI, the setting logic can be different from pure Android, which often confuses new users.

To start, open the Settings app and find the Sounds and Vibrations section, where you'll see the main volume sliders and the choice of ringtone. MIUI 14 may be present switch between SIM-If there's no switch, the default system is to change the melody for the main SIM card, and the second one has to use a different approach.

Often users forget that the audio settings can be duplicated in the Phone app. By clicking on three dots in the corner of the dial screen and selecting Settings, you can find Inbound Call, which sometimes hides the ability to select the sound source for each SIM card separately, especially if both cards are activated on the phone.

💡

If there is no SIM separation in the general audio settings, try changing the tune right in the incoming call. When the phone rings, a button to adjust the sound for the current call often appears on the screen.

It is important to understand that standard themes downloaded from Themes store can block the ability to change system sounds. If menu items are gray or inactive, check if a third-party theme with strict restrictions is applied.

Configure via the “Sounds” application and File Manager

The most flexible audio management tool in Xiaomi smartphones is the Sound app (or Mi Sound in some regions), which is where you can customize in detail which track will play for SIM 1, and which for SIM 2. This method is considered the most reliable, since it works directly with system sound profiles, avoiding possible bugs of the settings interface.

Open the Sounds app and go to the Call Melody tab. At the top of the screen, you'll see a switch or tabs denoting SIM 1 and SIM 2. Once you select the right SIM card, you can listen to standard tracks or click the + (or "Select from Files") button to download your audio file.

If a standard application doesn't open up files, the built-in Explorer comes to the rescue. Find the downloaded track, click on it and select Set as the ringtone. In the menu that appears, the system will ask which SIM card to assign that sound to. This method is good for its directness: you work with a specific file and immediately assign the addressee to it.

Use of third-party applications for ringtones

When MIUI is not built in or it doesn’t work properly, Google Play apps come to the rescue. Programs like Zedge or SuperRingtones offer huge sound bases and, more importantly, have their own melodies assigning mechanisms that often bypass system limitations, especially for older versions of Android, where dual-SIM card management was weak.

The way these applications work is simple: you pick a track inside the program, you click "Install," and the application asks permission to change the system settings of the sound. Once you grant permission to Change system settings, the program itself prescribes the path to the file in the corresponding SIM profile, which saves the user from manually searching for files deep in the folders.

However, be careful with permissions. Many ringtone applications require excessive access to contacts and geolocation. To set a melody, you need permission to access Files and Media and System Settings. Avoid installation if the program requires access to SMS or camera without an explicit need.

• 📱 Popular apps: Zedge, Ringtone Maker, Music Cutter.
• 🔐 Key resolution: "Change system settings" (not to be confused with device administrator).
• ⚙️ Mechanism of operation: the application acts as an intermediary between the file and the sound registry system.

⚠️ Note: When using third-party apps to install ringtones, after updating the Android operating system or shell MIUI, This is due to changes in security policies that restrict third-party programs from accessing system audio profiles.

Problem Solving: Why the Melody Doesn't Change

Despite its apparent simplicity, Poco X3 users often face a situation where the set melody is not played or replaced by a standard one. One of the most common reasons is the aggressive battery optimization characteristic of the MIUI shell. The system can "kill" the background processes responsible for the playback of user ringtones, considering them as extra load.

To avoid this, you need to go to the battery settings, find the application through which you set the sound (or the system application "Sounds"), and set the Unlimited mode, and check whether the "Do Not Disturb" or "Silent Mode" mode is enabled, which may take precedence over the user's audio settings for certain contacts or SIM cards.

Another problem is the file paths, and once you update your Android security, the paths to the folders can change, and the system simply stops seeing the file at the old address, in which case renaming the file (avoid special characters and Cyrillic characters in the title) and moving it to the Ringtones root folder manually through the explorer will help.

It is also worth checking the formatting itself. SD-If the card was formatted as "internal memory" in one phone and then transferred to another (or after reset), access rights may be lost.

Fine tuning of vibrations and profiles

Set different melodies is only half the success. To fully differentiate incoming calls on the Xiaomi Poco X3, it is recommended to adjust the vibration patterns. In the Sounds and Vibrations menu, you can choose not only the vibration force, but also its rhythm. You can create your own rhythm by tapping on the screen and assign it, for example, only to the second SIM card.

Sound profiles (General, Silent, Vibration) also have their own nuances. Make sure that when switching profiles, the settings for the second SIM card are not reset. In some versions of MIUI, the In-Car profile can force the speakerphone to turn on and change the melody to a louder one, ignoring your personal settings for the SIM 2.

Smart Scenarios (if supported by a region) are available for advanced users, allowing you to automatically change the ringtone depending on the time of day or location, for example, in the evening, only a quiet signal can come to the second SIM card (working), and in the afternoon, a loud and ringing signal.

💡

Comprehensive configuration includes not only file selection, but also application access rights, power saving settings, and synchronization of sound profiles for both SIM cards.

Frequently Asked Questions (FAQ)

⚠️ Note: When you reset your phone to a factory setting, all user tunes will be deleted along with the memory cleanup. Be sure to back up your Ringtones folder before drastically taking action with the system.