How to record a phone conversation on Xiaomi Redmi Note 9

Xiaomi’s Redmi Note 9 lineup is well-deservedly popular due to its excellent balance between price and functionality. However, owners of these devices often face the need to maintain an important dialogue with the subscriber for later analysis or as evidence. The MIUI’s standard shell offers built-in tools for this, but their work may depend on the firmware region and the operating system version.

In this article, we will discuss all the current methods of recording the audio stream at time, we will consider the regular features of the system, which are often hidden from the user’s eyes, and also discuss the installation of specialized software if the standard functionality does not meet your needs. It is important to understand that with the release of new versions of Android security policies are tightened, which directly affects the availability of certain features.

In most cases, recording your own conversation for personal use is permitted, but publishing or using such recordings in court may require notice to the second party.So before proceeding to a technical implementation, make sure that your actions comply with the law.

Use of the built-in MIUI dictaphone

The first and most logical step is to check the capabilities already embedded in the software of your Xiaomi Redmi Note 9. The MIUI shell is famous for its functionality, and the standard Phone app often already has the right tool. To begin, open the standard “caller” and go to the settings by clicking on three dots or a gear in the corner of the screen.

If you have one, you're lucky enough to activate automatic recording of all incoming and outgoing calls, or you can set up recordings for certain contacts only, the most stable method that doesn't require additional software.

⚠️ Note: Global versions of firmware (Global) ROM) In Europe, the embedded record feature is often blocked due to strict privacy laws. GDPR. If you haven’t found the appropriate settings, chances are your region doesn’t support this option natively.

If you have the settings, you can flexibly manage the process, such as enabling voice or beep notifications, and ignoring that can have legal consequences, because it is an offence to covertly record a conversation in a number of jurisdictions.

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Check your firmware version in the About Phone section. If you have a Global ROM and you need a recording feature, consider reflashing to the Chinese version (CN ROM) with subsequent Russian installation, but this does not guarantee.

Set up automatic recording of conversations

For those who have managed to find hidden settings or whose version of the software allows you to control the recording, it is extremely important to configure the parameters correctly. Automating the process eliminates the need to manually turn on the recorder every time you talk, which is especially convenient in stressful situations or in a hurry.

The recording settings menu usually has the following options:

• 📞 Recording all calls – activates the fixation of each incoming and outgoing call without exception.
• 📇 Recording selected numbers – allows you to create a white list of contacts, conversations with which will be recorded automatically.
• 🔊 Audible Warning – An option that adds a voice message “Conversation is being recorded” at the beginning of the dialogue.

Special attention should be paid to the choice of storage formats, files can take up a significant amount of memory, especially during long conversations in high quality, it is recommended to periodically check the folder with records and transfer important files to the cloud storage or to the computer.

It’s also worth noting that when automatic recording is enabled, the system can work slightly less stable on older versions of Android, consuming more CPU resources. If you notice that the smartphone has started to slow down during a conversation, try turning off the recording of unknown numbers.

Third-party applications for recording calls

When Xiaomi’s regular tools don’t provide the functionality needed, third-party solutions come to the rescue, but since Android 10 and up, Google has significantly limited third-party apps’ access to the microphone and audio stream during a security call.

However, some applications have learned to bypass these limitations or use alternative recording methods (such as through speakerphone).

• 📱 Automatic Call Recorder is one of the oldest applications that is frequently updated for compatibility with new OS versions.
• 📼 Cube ACR — powerful tool that supports recording not only ordinary calls, but also conversations in messengers (WhatsApp, Viber, Telegram).
• 🎙️ TapeACall is a popular solution that sometimes requires a conference connection to mix sound.

⚠️ Note: When installing third-party applications from unknown sources, the system MIUI You'll be giving multiple security alerts, and you'll have to consistently confirm the installation, ignoring the waiting timers.

To work properly on Xiaomi smartphones, you need to provide them with advanced permissions, often need to enable access to contacts, microphone, phone, and also turn off battery savings for a particular application so that the system does not “kill” the recording process in the background.

Solving Silence Problems in Android 11-13 Recordings

Redmi Note 9 owners who upgrade to Android 11, 12 or 13 often face a problem when recording is happening, but the audio is missing, due to a change in the operating system API that prohibits direct access to the audio stream.

The first method is to use special scripts or patches if you have Root rights. However, obtaining super-user rights is difficult for a beginner and can lead to a loss of warranty. A safer, but less reliable way is to turn on the speakerphone while you're talking, in which case the microphone will record the voice of the interlocutor through the speaker, although the sound quality may be lower due to echoes and environmental noises.

Some applications, such as Cube ACR, offer the installation of a special ancillary application (App Connector) through ADB (Android Debug Bridge), which allows you to bypass the standard system restrictions without obtaining root rights.

adb shell pm grant com.cubeacr.call_recorder_addon android.permission.READ_LOGS

You have to understand that fighting Google's restrictions is a constant arms race, and what worked yesterday, after another MIUI or Android security update, may not work, so always keep 2-3 proven apps on hand.

Where records are stored and how to manage them

Understanding the structure of Xiaomi’s file system will help you quickly find and sort saved dialogs. By default, all audio recordings made by the standard tool are stored in internal storage in a folder. MIUI/sound_recorder/call_rec. These files can be accessed through the standard Files Explorer».

For third-party applications, the paths may be different: they usually create their own directory in the root of internal memory or in the Android/data folder. In recent versions of Android, access to the data folder is limited, so applications often offer their own interface to listen to files inside the application itself.

Below is a table that helps you navigate the file types and their location:

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Regularly copy important records to your computer or the cloud. The internal memory of your smartphone is not the most reliable place to store critical information in case your device breaks down.

Record management involves not only listening, but also renaming files for easy search. Xiaomi's regular player allows you to add tags and, for serious work, it is better to use third-party audio managers who are able to recognize a phone number from a file name.

Frequent questions and technical nuances

Users often face the same problems during the setup process, such as recordings can be interrupted if an incoming notification from another high-priority application comes during a conversation, and sound quality is directly dependent on the quality of cellular communication (VoLTE can affect the capture of the audio stream).

Another important nuance is Do Not Disturb. Some MIUI power saving settings can block the microphone from running for background apps if the smartphone screen is turned off. Add a recording app to the battery exclusion list (“No restrictions”). Also check if the recorder conflicts with other apps that have access to the microphone, such as the Google Assistant voice assistant.

⚠️ Note: When using a Bluetooth headset, the voice of the interlocutor can be recorded from only one channel or not at all, depending on the profile of the headset and the Bluetooth version.

If you plan to use the records as evidence, make sure that the file stores metadata (date, time, number). the Xiaomi regular app usually embeds this information in the file name, which makes it easier to identify. For third-party programs, this option must be activated in the settings separately.

Finally, remember to charge the battery: Constantly recording conversations, especially in high quality and with a screen running, consumes energy faster. If you're waiting for an important call to be recorded, make sure you have enough charge or a connected charger.