Xiaomi smartphones have long established themselves as one of the most functional devices in the Android market, but privacy issues and legal regulations in different countries make their own adjustments. Owners of the Mi 9 model often face a situation where the standard call recording function is absent or does not work correctly depending on the firmware version. This is especially true for global versions of the MIUI system, where functionality can be limited compared to Chinese counterparts.
Every user has to record important agreements, instructions, or just save memorable conversations. Fortunately, Xiaomi engineers have devised several mechanisms to do this, ranging from built-in system tools to custom software installations. Understanding the features of your version of the shell will be key to successful customization.
In this article, we will take a closer look at all the available methods for activating a voice recorder during a conversation, learn how to circumvent software restrictions, what settings are hidden in the developer menu and why some applications may not work on Android 10 and higher. We will also look at the nuances of how microphones work in Xiaomi Mi 9 to ensure the recording quality is as clean as possible.
Verification of the built-in recording function
The first thing to start looking for a solution is to check the standard functionality of your device. In most cases, especially on Chinese firmware versions or older builds of global MIUI, the recording function is already built into the system call. To check, open the Phone app and pay attention to the interface during an incoming or outgoing call.
If you see a button that says "Record" or a microphone icon, you're lucky that the feature is active. However, on many global versions of the Xiaomi Mi 9, this button may not be available due to Google's regional restrictions, in which case the system blocks access to the audio stream at the kernel level, and standard methods will not be able to activate it.
It's also worth checking the settings of the call app itself, and sometimes it's hidden deep in the menu and requires manual activation before you use it, and if the menu is empty, it's a signal that you need to use alternative methods or change the region in your system settings.
It is important to understand the difference between the global (Global) and Chinese (China) versions of software. In Chinese builds, recording a conversation is a native function, whereas in global builds it is often cut out to comply with GDPR and other data protection regulations.
⚠️ Warning: Attempting to flash the Chinese version on the global or vice versa without unlocking the bootloader can lead to locking the device on the Internet. IMEI. Be careful when manipulating the region.
Activation of the record through region change
One of the most effective and safest ways to return the recording feature to the global versions of the Xiaomi Mi 9 is to temporarily change the region of the device.The MIUI system links the availability of certain features to the geographic location specified in the settings. By switching the region to a country where recording calls is allowed by law (for example, India, Singapore or Russia), you can unlock hidden opportunities.
To do this, go to the smartphone settings menu, find the "Additional" or "Extended Settings" section where the "Region" item is located. Change the current value to "India" or "Singapore", after which the system will require a reboot or simply apply changes, after which the record button may appear in the "Phone" application.
This method doesn’t require root rights or complex firmware reflashing; it works at the software level by changing configuration files that are responsible for the services available in a particular region, but it’s worth remembering that changing the region can affect some local Xiaomi services, such as themes or cloud storage.
Once activated, you can return the region back, and in some cases, the recording setting is saved even after you return to the original settings, because it is written in the configuration of the call application. If the function is lost after the region is returned, you will have to repeat the procedure before every important call or use third-party software.
☑️ Algorithm of region change
Use of third-party applications for recording
If the system constraints are too tight and the change of region doesn’t help, third-party apps come to the rescue from the Google Play store. However, since Android 9 and especially Android 10, which is installed on the Xiaomi Mi 9, Google has significantly limited third-party software access to the microphone during the call, this is done for security reasons, so that programs can not spy on users.
However, some developers have found workarounds: Applications like Call Recorder – ACR, TapeACall or Automatic Call Recorder can work, but often require complex setups, and in some cases, they require the inclusion of special features (Accessibility) or even the use of ADB commands to provide advanced permissions to work properly.
The quality of recording through third-party applications often depends on the phone model and the Android version. On the Mi 9 with its advanced noise reduction system, third-party software can only record your voice, and the interlocutor will be heard very quietly or through the speaker. To solve this problem, application settings often offer a “through the speaker” recording mode or use of hands-free communication.
When installing such programs, carefully examine the permissions requested. The recorder should not require access to contacts unless it is claimed as a feature, or access to geolocation. Choose applications with high ratings and a large number of reviews to minimize the risk of data leakage.
Why does Google block the recording of calls?
Set up automatic recording of conversations
If you've managed to activate the built-in recording function (through a region change or initially), it's critical to set up the automation correctly. Manually turning on the recording during a conversation often causes the user to forget to press the button on time, and an important part of the dialogue is lost, and the automatic mode solves this problem.
To set up, go to the Phone app menu, click on three dots or a gear in the corner, and select Call Record. Here you will find the Automatic Call Record switch, and when you activate it, you can choose whether to record all calls or only numbers from certain lists, and it's a flexible tool to filter out unnecessary noise.
The settings menu also includes a recording format. There is usually a choice between MP3 and WAV (or M4A). WAV format provides better sound quality but takes up more space. MP3 is more compact and optimal for long conversations that do not require studio quality. Given the memory capacity of the Xiaomi Mi 9, the choice of format can be secondary, but for archiving quality is more important.
Don't forget to set up notifications. The system may offer a voice alert to the person who starts recording ("This conversation is being recorded"). In some jurisdictions, it's a legal requirement. If you're in a region where recording without warning is prohibited, ignoring that setting can have legal consequences.
| Parameter | Description | Recommendation |
|---|---|---|
| Sound source | Microphone or Audio Stream | Audio stream (best quality) |
| File format | MP3, WAV, AAC | MP3 to save space |
| Notification | Voice warning | Insert (by law) |
| Automation | Record of all or chosen | Only selected contacts |
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Use the "Write only selected numbers" function to avoid filling the memory with conversations with couriers or spam. Add important contacts to the "Favorites" list and set up the entry only for them.
Problems with sound quality and their solution
Even with successful recording activation, Xiaomi Mi 9 users may face the problem of quiet voice of the interlocutor, due to the peculiarities of noise cancellation and routing of the audio stream in Android, the system can direct the voice of the interlocutor only in the ear-piece (talk speaker), without transmitting it to the recording channel.
One solution is to turn on the speakerphone while you're talking. When the sound goes through the main speaker, the smartphone microphone captures both voices. Of course, this is not always convenient and can reduce privacy, but it ensures that the recording takes place. In some voice recorders, there's a "Write through the speaker" option in the settings, which does the same thing programmatically.
It’s also worth checking your energy saving settings. Aggressive MIUI optimization can kill the recording process in the background unless an application is added to an exception. Go to Settings → Battery and Performance → Apps and find your voice recorder or caller. Set Unlimited mode.
If you use a headset or Bluetooth headphones, the recording quality may change. Some headphone models don't transmit the audio stream back to the phone for recording, working only as an output device, and in such cases, it's recommended to conduct important negotiations using the smartphone itself or a proven wired headset.
⚠️ Note: Using Bluetooth headsets to record conversations on Xiaomi Mi 9 often results in loss of voice.
Where to find and how to manage recorded files
After the conversation is over, the file is stored in the device's memory. The standard path in the Xiaomi file system usually looks like MIUI/sound_recorder/call_rec internal Storage/MIUI/sound_recorder/call_rec. You can find these folders through the standard Files Explorer».
Inside the folder, files are usually named by date and time of the call or by phone number, if it is determined. For ease of management, you should use the built-in Dictophone or Sound app, where the records are sorted by date and have convenient tags, and you can trim, rename or send the file here.
Remember to clean the record folder regularly. High-quality audio files can take up a significant amount of memory, especially if you record long meetings. Xiaomi Mi 9 has fast UFS 2.1 memory, but overflowing storage can slow down the system as a whole.
To back up important records, it is recommended to use cloud services. You can set up automatic synchronization of the folder with records with Google Drive or Xiaomi Cloud, which will protect data from loss in the event of a smartphone breakage or reset.
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Regular cleaning of the folder with call records and setting up cloud synchronization are mandatory procedures to maintain the performance of the Xiaomi Mi 9 and the safety of important information.