How to record a phone conversation on Xiaomi Redmi Note 9 Pro: Expert guide

Xiaomi smartphone owners often face the need to keep important negotiations, but standard methods may not work properly due to the features of the operating system. On the MIUI-based Redmi Note 9 Pro, the audio capture process has its own nuances, depending on the firmware version and region. Global versions of the device often come with a Google Dialer preinstalled, which imposes restrictions on the functionality of the built-in voice recorder.

In this article, we will take a look at all the ways you can activate this feature, from customization to alternatives. You will learn how to bypass system limitations and ensure that every important call is kept in high quality. The key to a successful record is whether you have superuser rights or use specific versions of applications, since Android’s privacy policy strictly regulates access to the microphone during a call.

The standard capabilities of the MIUI voice recorder on the Redmi Note 9 Pro

The MIUI Dictophone app has advanced functionality that allows you to automatically save conversations. However, depending on the region in which your smartphone was released, the interface and availability of this feature can vary significantly. In Chinese and some European firmware, this option is built directly into the call interface without requiring additional actions.

To activate the function, you need to go to call settings. Find Call Record and activate the Auto Record switch. Here you can configure filters to save audio only from certain contacts or all subscribers. The default save format is M4A, which provides a balance between sound quality and memory occupied.

It’s worth noting that on global versions of the Redmi Note 9 Pro with Google Phone installed, the standard MIUI voice recorder may not have access to the audio stream, in which case the system may offer speaker communication or block the recording altogether. If you see a notification that recording is impossible, this means that strict Android security policies are activated.

Users often mistakenly believe that the system update will return full functionality, but the situation often gets stricter. It is important to check the version of the Phone application in the settings. If it says Google Dialer, then built-in MIUI tools will not record the conversation without third-party software.

⚠️ Note: On some global firmware MIUI Even if there is a switch in the menu, the recording can be conducted without the sound of the interlocutor due to locks at the kernel level of the system.

If the standard settings don't work, don't despair. There are several proven ways to circumvent these constraints, which we'll look at later, and the key is to correctly identify your firmware type and the default set of calling apps.

Google Dialer Problems and Their Solutions

The main reason for the lack of recording conversations on Xiaomi Redmi Note 9 Pro is the transition of Xiaomi to standard Google applications in global versions of devices. Google Dialer has built-in protection against recording, requiring mandatory voice notification of the interlocutor to start recording audio, which is often unacceptable.

To check which call you have, open the Phone app, click three dots in the corner, and select Settings. If there's a Call Record on the menu with a notification alert, you're using Google Dialer, in which case the MIUI regular recorder is powerless.

The solution may be to install an alternative version of the application “Phone” from MIUI. This requires removing updates to the standard application or use ADB-commands to deactivate it, and then the smartphone is installed. APK-The original Xiaomi call file that is free of Google restrictions.

The process of replacing system applications requires caution. Incorrect actions can lead to unstable operation of the communication module.

An alternative and safer method is to use third-party applications that use Accessibility Services to emulate taps and record sound through a microphone, bypassing system locks.

Use of third-party applications for recording

If replacing a system call seems too difficult or risky, the best solution is to install specialized software from Google Play, the leader in this niche is the Automatic Call Recorder app from Appliqato or Cube ACR.

These programs are based on the principle of interception of audio stream, when you receive or make a call, they automatically activate the recorder. To work correctly on Android 10 and above, you need to give the application a number of special permissions.

First of all, you have to allow access to the microphone, the phone, and critically, to the "Special Opportunities" -- you have to find the set recorder on the special feature menu and turn it on, so that the app can hear the sound even when the screen is off.

• 📞 Automation: The application itself determines the beginning and end of the conversation, saving the file without user intervention.
• ☁️ Sync: Automatically upload records to Google Drive or Dropbox cloud storage to keep data safe.
• 🔒 Protection: Set a password or biometric protection to access a list of recorded conversations.

Note that some versions of Android may record the sound of the interlocutor quietly. In the settings of the recorder application, there is often an option “Sound Source”. Experiment with the choice between “Microphone”, “Voice Call” and “Voice Communication” for the best result.

Configuring sound sources and formats

The quality of the recording depends on the right choice of audio source. In modern smartphones, including the Redmi Note 9 Pro, the sound architecture is complex, and the application must "get" into the right channel. If you only hear yourself, then the wrong source is chosen.

In third-party app settings, try changing the Audio Source setting. Android 10/11/12 is often the case with either Mic or Voice Communication. If the phone is on the table, the sound is good, but you can hear the cloth noise in your pocket.

It's also important to pay attention to the save format. The default format is compressed, but for legal relevance, you'd better choose a high-bitrate WAV or MP3, which will increase the file size but ensure that speech is legible.

Remember to clean the records folder regularly. Files can take up a significant amount of memory, especially if you record long conversations in high quality. Set up automatic deletion of records older than 30 days if disk space is limited.

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Use headphones with a microphone during important conversations if the recording is not working properly, which often helps to separate the channels of sound and improve the intelligibility of the interlocutor.

Working with SuperUser and TWRP (For Advanced)

For users who are not afraid of complex technical solutions, there is a method of recording through obtaining SuperUser (Root) rights, which gives full access to the file system and allows you to use system calls to record sound directly from the kernel, bypassing all the restrictions of Google and MIUI.

The process involves unlocking the bootloader, installing a custom TWRP recavator, and firmwareing superuser rights, such as through Magisk. After that, you can install a module that patches the system call or provides access to the audio stream to any application.

This method is the most reliable, as it guarantees the recording in perfect quality of both sides of the conversation, however, it cancels the warranty on the device and carries the risk of “bricking” the smartphone if errors in the process.

⚠️ Attention: Unlocking the bootloader on Xiaomi resets all data and requires waiting 168 hours (7 days) after the account is linked.Be prepared for data loss.

If you decide to take this step, be sure to back up the EFS partition and persist, as their loss can lead to the inoperability of IMEI and communication modules.

Legal aspects and data storage

When recording telephone conversations, it is important to remember the laws of your country, and in most cases, recording a conversation without warning the interlocutor may be a violation of personal data law or confidentiality of communications.

Use the records obtained solely for personal archives or as evidence in the courts where permitted, and the transfer of the records to third parties or the publication on the Internet without the consent of the participants in the conversation may entail legal liability.

Encryption is recommended for secure storage of sensitive data. Many recorders have a pin-code installation function, and you can also put files in a Hidden Folder in the MIUI file manager.

Regularly copy important records to external media or to the cloud. the internal memory of the smartphone is not reliable storage, as in the event of a device failure, the data can be lost forever.

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The most stable way to record on Redmi Note 9 Pro without root rights is to use the Cube ACR app with a properly configured Voice Communication sound source.

Frequently Asked Questions (FAQ)