Recording telephone conversations on Xiaomi Redmi 9 is a task that users face for a variety of reasons: from saving important business negotiations before recording evidence in controversial situations. However, the standard Android experience on this device doesn't include built-in call recording, and Google Play restrictions make installing custom apps difficult. In this article we will analyze 5 proven methodsthat work on Redmi 9 MIUI 12/13 and Android 10/11, including bypassing blocking and alternative solutions.

Model features Redmi 9 (code name lancelot) is the use of the processor Mediatek Helio G80 and limited support for system modifications. This means that some universal recording methods (for example, through ADB or Xposed) may not work or require complex manipulations. We will focus on solutions without root accessthat are available to most users, and will also point out legal risksrelated to recording conversations without the interlocutor's consent in some countries.

📊 Why do you need call recording?
For work (coordination with clients)
Personal safety (recording threats)
Legal evidence
Other

1. Why doesn't Redmi 9 have built-in call recording?

Smartphones Xiaomi traditionally do not include the call recording function in the standard firmware MIUI for global versions of devices. This is due to:

  • 📜 Google Policy: since 2019, applications for recording calls are removed from Google Play for violating privacy rules (with the exception of applications for business use with notification of the interlocutor).
  • 🌍 Regional laws: in the EU, the USA and some other countries, recording conversations without the consent of both participants can be illegal.
  • 🔧 Technical restrictions: on Android 10+ access to the audio stream during a call is blocked for third-party applications without special permissions.

However, in firmware MIUI for Chinese market (for example, MIUI China) the call recording function is present by default. This confirms that the hardware capabilities Redmi 9 allow you to record conversations, but the manufacturer deliberately disables it for global versions.

⚠️ Attention: In Russia, recording telephone conversations without the consent of the interlocutor is permitted only in cases provided for in Art. 23 of the Constitution of the Russian Federation (for example, to protect one’s rights in court). Rules may vary in other countries - check local laws before use.

2. Method 1: Cube Call Recorder ACR application (without root)

Cube Call Recorder ACR is one of the few applications that bypasses Android restrictions on Redmi 9 thanks to the use of an alternative recording method via VoIP-bridge. It does not require root access, but has its own nuances:

  1. Download the APK file from the official website Cube ACR (not from Google Play!).
  2. Before installation, allow installation from unknown sources in Settings → Applications → Special rights access → Installation of unknown applications.
  3. Run the application and provide all requested permissions (microphone, contacts, phone).
  4. In the settings, select Recording via VoIP (this is the key point for Redmi 9).

The application will record conversations in the background, but the sound quality will have to be sacrificed: the interlocutor’s voice may sound quieter due to the routing features. Also, Cube ACR does not always work correctly with VoIP-routing. Also, Cube ACR does not always work correctly with dual SIM cards on Redmi 9 - in this case, the recording may be interrupted.

Install APK from an official source|

Allow access to the microphone and calls|

Select the "VoIP" mode in the settings|

Check recordings after each call (sometimes files empty)-->

Parameter Cube ACR Built-in recording (MIUI China)
Requires root ❌ No ❌ No
Quality sound 🔊 Average (distortion with a weak signal) 🔊 High (clear sound)
Working with 2 SIM ⚠️ Possible failures ✅ Stable
Notification of the interlocutor ❌ No (risk of breaking laws) ✅ Yes (in some regions)

3. Method 2: Using a second line (Google Voice or SIP)

If you need to record conversations legally (with notification of the interlocutor), you can use cloud services like Google Voice or SIP numbers. This method is suitable for business calls:

  • 📞 Google Voice: create an account, get a virtual number and enable the recording function in the settings. All conversations will be saved in the cloud with the notification "This call is being recorded." data-i="116">SIP clients
  • 🔗 SIP clients (For example, Zoiper or Linphone): connect to a SIP provider with recording function (for example, VoIP.ms) and set up call forwarding from Redmi 9.

The disadvantage of this method is the need to use a second number, which is not always convenient. However, it completely legal is suitable for business negotiations. On Redmi 9 to do this, just install the application Google Voice from Google Play and set up call forwarding to Settings → SIM cards and mobile networks → Call forwarding.

How to set up forwarding to a SIP number?

1. Install a SIP client (for example, Zoiper) and register an account with the provider (for example, VoIP.ms).

2. In settings Redmi 9 go to Settings → SIM cards and mobile networks → Forwarding calls.

3. Activate forwarding to the SIP account number (format: yourlogin@voip.ms).

4. All incoming calls will go through SIP, where they can be recorded with a notification.

4. Method 3: Recording via an external voice recorder or headphones

If software methods are not suitable, you can use hardware solutions:

  • 🎤 External voice recorder: connect the recorder to Redmi 9 via USB-C (with an OTG adapter) or place it next to the speaker Applications. like Easy Voice Recorder allow you to record sound from an external microphone.
  • 🎧 Headphones with microphone: some models (for example, Sony MDR-XB55AP) have a built-in microphone that can be used to record a conversation through the app Voice Recorder.

This method does not depend on the Android version is suitable and works even on locked devices. However, the recording quality will be worse than with software methods, and manual control (turning recording on/off) will also be required. For Redmi 9 any voice recorder with a connector 3.5 mm or USB-C.

⚠️ Attention: When using an external voice recorder, make sure that it supports the format .mp3 or .wav —some cheap models save recordings in proprietary formats that are difficult to reproduce on a smartphone.

5. Method 4: Installing custom firmware (for advanced)

If you are ready to experiment, you can install custom firmware with a built-in call recording function. For Redmi 9 suitable for:

  • 📱 LineageOS: open firmware with support for recording calls through the module CallRecorder.
  • 🔧 PixelExperience: firmware based on pure Android with recording function (requires unlocking the bootloader).

The installation process includes:

  1. Unlocking the bootloader via Mi Unlock Tool (may take up to 7 days due to Xiaomi restrictions).
  2. Installing custom recovery TWRP for Redmi 9 (version 3.5.2+).
  3. Firmware of the selected OS and module Magisk for additional functions.

This method gives maximum recording quality and stability, but requires technical skills. Also note that unlocking the bootloader resets all data on the device and may void the warranty.

💡

Before flashing the firmware, make a backup copy of your data via Mi PC Suite or TWRP Backup. It is especially important to save the folder /sdcard/MIUI/backupwhere backup copies of system applications are stored.

6. Method 5: Recording via a second phone (emergency option)

If no other methods are available, you can use second smartphone to record the conversation:

  1. Put the second phone next to Redmi 9 i turn on voice recording on it (for example, through the standard application Dictaphone).
  2. Activate speakerphone on Redmi 9so that both voices are recorded clearly.
  3. After the call, transfer the recording to the main device via Bluetooth or cloud storage.

This solution does not require software installation works in 100% of cases, but has obvious disadvantages: low sound quality, the need for manual control and the risk of extraneous noise. To improve the sound, you can use a second phone with a directional microphone (for example, Samsung Galaxy S22 Ultra c). mode Pro Audio).

Comparison of methods: which one to choose?

The choice of recording method depends on your goals and technical capabilities:

  • 🔹 For rare recordings: external voice recorder or second phone (simple and without risks).
  • 🔹 For regular use: Cube ACR (if you are willing to put up with quality) or Google Voice (if you need a legal method).
  • 🔹 For maximum quality: custom firmware (only for experienced users).

On Redmi 9 the most balanced solution remains Cube ACR, despite its shortcomings. If you need legally clear solution, pay attention to Google Voice or SIP telephony.

💡

On Redmi 9 without root access, the best balance of convenience and quality is given by Cube ACR in VoIP mode, but for critical recordings (for example, for court) it is better to use legal methods with notification of the interlocutor.

FAQ: Frequently asked questions about recording calls on Redmi 9

Is it possible to record calls through the built-in Voice Recorder application on Redmi 9?

No, the standard application Dictaphone on Redmi 9 cannot record sound during a telephone conversation due to Android limitations. It can only record sound from the microphone when the call is made through the speakerphone, but the quality will be low.

Why does Cube ACR not record some calls on Redmi 9?

The reason is usually one of three factors:

  1. The call is in progress via a second SIM card (the application may not support dual-SIM).
  2. Weak network signal - VoIP bridge requires stable Internet.
  3. Energy saving restrictions: add Cube ACR to exceptions in Settings → Battery → Optimization batteries.

Is it legal to use call recordings in court in Russia?

Yes, but only if the recording was made one of the participants in the conversation (Article 23 of the Constitution of the Russian Federation) and does not violate the secrecy of correspondence. However, the court may not accept the recording if it was obtained illegally (for example, through wiretapping without your participation). For reliability, notify your interlocutor about the recording.

How to transfer call recordings from Redmi 9 to a computer?

Recordings are usually stored in a folder /sdcard/CubeBackups (for Cube ACR) or /sdcard/CallRecordings (for other applications). Connect your phone to your PC via USB, select mode File transfer and copy the folder to your computer. Alternatively, you can use Mi PC Suite or cloud services (Google Drive, Yandex.Disk).

Is it possible to record calls in WhatsApp or Telegram on Redmi 9?

Yes, but only using external means:

  • For WhatsApp: use a second phone to record audio (similar to regular calls).
  • For Telegram: in the settings of some versions there is a built-in recording of voice messages, but not calls.

Applications like Cube ACR do not work with VoIP calls from instant messengers.