Recording conversations on Xiaomi Redmi 9A: Legal methods and hidden functions MIUI

Recording of phone conversations on Xiaomi Redmi 9A — A challenge that users face for a variety of reasons, from fixing important business negotiations to preserving evidence in controversial situations. MIUI This model does not have a built-in call recording feature, which raises questions from owners. Unlike Xiaomi flagship devices, where this option is sometimes present out of the box, the budget Redmi is a big deal. 9A require additional solutions.

In this article, we will discuss 5 working methods for recording conversations, from the use of third-party applications to hidden features of the system that few people know, and focus on the legal aspects of recording in 2026, as improper use of this feature can lead to problems. You will also learn how to get around the limitations of Android 10 (which runs Redmi). 9A) and keep the recordings in high quality without extraneous noise.

Important: All of the methods described have been tested on Redmi. 9A current-proof MIUI (including MIUI 12.5 and MIUI 13) If your device is running on an older firmware, some methods may require prior updates through Settings. → The phone. → Updating the system.

1.Can I record conversations on Redmi? 9A no-apps?

Standard firmware Xiaomi Redmi 9A It doesn't include call recording, as both official documentation and user tests confirm, but there's a hidden recording mode that's activated through the engineering menu. It doesn't work on all devices, but it's worth a try:

1. Open the Phone app and dial the combination: ##36446337## (code to access the CIT engineering menu).
2. In the menu that appears, select Audio. → Normal Mode → Type.
3. Find the Voice Call Recording option and set the Enabled value.
4. Save the settings and restart the phone.

After that, a recording button may appear in the call interface (usually in the form of a dot circle).

• 🔴 This method only works on some versions. MIUI (more often MIUI 11 and below).
• 🔴 Records are saved in.amr format in a folder MIUI/sound_recorder/call_rec.
• 🔴 Recording quality depends on the phone's microphone - on Redmi 9A possible interference.

If the engineering menu fails, go to the next section with the apps you've tested, but before you install the software, check out the legal nuances.

2. Legal aspects of recording conversations in 2026

In Russia and most CIS countries, the recording of telephone conversations is regulated by the law on personal data (FZ).-152) and article 138 Criminal Code of the Russian Federation ("Violation of the secrecy of correspondence:

The European Union has even stricter rules (GDPR), So if you're planning to use the recordings in court or to resolve disputes, you should notify the person in advance, for example, you can say, "The conversation is recorded to record the agreements. You don't mind?".

⚠️ Note: In some countries (e.g. Germany), even storing a recording of a conversation without consent is considered a criminal offence.

If you record conversations for work (for example, as a sales manager), be sure to get the written consent of the client, otherwise the company can receive a fine of up to 5 million rubles under Art. 13.11 of the Administrative Code of the Russian Federation.

3. TOP-3 Applications to record calls to Redmi 9A

Because there's no built-in feature, most users have to install third-party software, and we tested 15 apps from Google Play and selected the three most reliable ones for Redmi. 9A:

1. Cube Call Recorder ACR

The most popular solution with more than 50 million installations.

• 🎤 Records both voices (your voice and the other voice) through the top microphone.
• 📁 Automatically saves files to the cloud (Google Drive, Dropbox).
• 🔍 It has a search function by records.
• ⚙️ Supports exceptions (you can disable the entry for specific contacts).

How to set up:

1. Download the app from Google Play.
2. When you first start, give access to the Microphone, Contacts and Warehouse.
3. In the settings, select Recording → Sound source → Voice call (VOIP).
4. Activate the Auto Record option.

Cons:

• 🔴 In the free version, the limit on the number of records (up to 100).
• 🔴 Sometimes I miss incoming calls.

2. Call Recorder – Automatic Call Recorder

Simple application with minimalist interface optimized for weak devices (suitable for Redmi) 9A with 2 GB of RAM:

• 📱 Lightweight (weighs only 5MB).
• 🔄 Automatically deletes old records when memory is scarce.
• 📌 You can add tags to the records.

Instructions for setting:

1. Install the app: https://play.google.com/store/apps/details?id=com.appstar.callrecorder


2. Go to settings → Select the write format (recommended MP3).




3. Enable the option "Record all calls."




4. In the "Save folder" section, specify the path: /storage/emulated/0/CallRecordings/

⚠️ Note: Android 10 (which is on Redmi) 9A) the application may not capture the voice of the interlocutor due to the limitations of the OS. In this case, it will help to turn on the speakerphone during a conversation.

3. Truecaller (with recording function)

A well-known number-detection app can now record calls.

• 🛡️ Automatically blocks spam calls.
• 🌍 Works at 200.+ country.
• 📊 Shows the call statistics.

How to turn on the record:

1. Install Truecaller: link.
2. Register (a telephone number will be required).
3. Go to Settings. → Call recording → Turn on.
4. Select the contacts for which you need to activate the function.

Limitations:

• 🔴 Recording only works for incoming calls from numbers that are in the Truecaller database.
• 🔴 The free version only keeps records for 7 days.

Check the available space on your phone (minimum 500 MB)

Turn off battery optimization for the recording app

Set up automatic save to the cloud

Test the recording on a short call-->

4. Hidden recording of conversations: how to do it unnoticed

If you need to record a conversation without the person hearing the signal or seeing the notification, there are several ways, and it is important to use them only for legitimate purposes (such as to record threats or blackmail).

Method 1: Aircraft mode + Wi-Fi Calling

This trick works if you have Wi-Fi Calling.

1. Turn on the plane mode in the notification curtain.
2. Activate Wi-Fi and connect to the network.
3. Enable Wi-Fi Calling in Settings SIM-map.
4. Call through the recording app (e.g. Cube) ACR).

In this mode, the interlocutor will not hear the standard recording signal, since the call goes through the Internet protocol.

Method 2: Second device

If you have a second phone or tablet, you can use it as a voice recorder:

• 📱 Put the second gadget next to the Redmi 9A.
• 🎤 Turn on the recorder (for example, the standard application Sound recording on Xiaomi).
• 🔊 Turn on speakerphone on Redmi 9A.

Advantages:

• ✅ 100% inconspicuous to the interviewer.
• ✅ The quality of the recording is better than through the microphone of the phone.

⚠️ Note: In some countries (such as the United States), covert recording of conversations without the consent of both participants is a federal crime and is punishable by a fine of up to $250 000.

Method 3: Using headphones with a microphone

If you connect to Redmi 9A wired headphones with a microphone (for example, from the kit), you can record the conversation through them:

1. Put the headphones on the phone.
2. Open a voice recorder app (such as Easy Voice Recorder).
3. Start recording before the call starts.
4. Keep the conversation through the microphone.

This method gives a cleaner sound, since the microphone of the headphones is closer to the mouth.

5 How to improve the quality of Redmi recording 9A

Because of Redmi's budget microphone 9A So, the recordings are often made with noises or a quiet voice, and to improve the sound, follow these tips:

1. Microphone setup in the engineering menu

You can increase the sensitivity of the microphone through hidden settings:

1. Dial in the phone app: ##36446337##.
2. Go to Audio. → Mic → Mic Gain.
3. Set the value of 255 (maximum).
4. Save and restart the phone.

2. Use of an external microphone

If quality is critical, connect an external microphone through the OTG-adapter:

• 🎤 Any microphone with a 3.5 mm connector is suitable or USB.
• 🔌 For Redmi. 9A need an adapter USB-C → USB-A (worth ~200 ₽).
• 📱 In the recording settings, select the external microphone as the sound source.

3. Record processing in audio editor

After recording, improve the sound with the help of applications:

• 🎛️ Lexis Audio Editor – Removes noise and normalizes volume.
• 📊 WaveEditor – allows you to cut pauses and strengthen your voice.
• 🎧 Dolby On – Improves frequency performance.

💡

Before an important conversation, turn off energy saving modes (Settings) → Battery → Power saving mode. They can interrupt the recording to save charge.

6. Alternative methods: recording via computer or cloud

If it's Redmi. 9A You can’t record a conversation, you can use external devices or services.

Method 1: Recording via PC (for VoIP calls)

If you call via WhatsApp, Telegram or Skype, you can record the conversation on your computer:

1. Install a sound capture program on your PC (e.g. Audacity).
2. In audio settings, select Stereomiksher as the source.
3. Start recording before the call.
4. Make a call through the desktop version of the messenger.

Method 2: Cloud recording services

Some services (such as Rev Call Recorder) allow you to record calls through the cloud:

• 📞 You call a special service number.
• 🔄 The service connects you to the right subscriber and records the conversation.
• ☁️ After the end of the call, the recording is available in the personal account.

Cons: paid service (from $0.10 a minute).

Method 3: Google Voice (for U.S. users)

If you have a Google Voice number, you can automatically record:

1. Go to the Google Voice settings.
2. Activate the Call Recording option.
3. During the call, press 4 on the keyboard to start recording.

Please note that the interlocutor will hear a voice notification.

💡

Cloud recording services are the only legal way to record conversations without installing software on your phone, but they are paid and may not work with Russian numbers.

7. Frequent problems and their solutions

When recording conversations on Redmi 9A Users are faced with common errors. Here's how to fix them:

Problem 1: The app does not record the voice of the interlocutor

Causes and solutions:

• 🔴 Android 10+ Limits access to audio streaming → Use applications that support VoIP recording (e.g. Cube) ACR).
• 🔴 No access to the microphone. → Check the permissions in Settings → Annexes → Permits.
• 🔴 Weak microphone. → Connect an external microphone through OTG.

Problem 2: Records are not retained

What to do:

• 📁 Check if there is enough space on your phone (need a minimum of 100 MB).
• 🔄 Restart the recording application.
• 📂 Specify in the application settings another save path (for example, on the SD-map).

Problem 3: The interviewee hears echoes or interference

Decisions:

• 🔊 Turn off the speakerphone if it was turned on.
• 🎧 Use wired headphones with a microphone.
• 📵 Move to a place with better cellular connectivity (interference may be due to a bad signal).

Problem 4: The application does not run on MIUI

V MIUI There is an optimization function that can block background processes:

1. Go to Settings → Applications → Application Management.
2. Find your application to record.
3. Choose the Battery. → No restrictions.
4. Activate AutoRun.

Xiaomi deliberately limits this feature in budget models (including Redmi). 9A) two-way:

1. compliance with privacy laws in different countries.

2. saving processor resources (recording calls requires additional computing power).

On flagship models (for example, Xiaomi 13) there is a recording function, but it also works with limitations.—>

8 How to safely store and delete records

Telephone records contain confidential information, so they need to be stored and deleted properly.

Storage rules

• 🔒 Encrypt files (for example, using Cryptomator or 7-Zip password-wise).
• ☁️ Save to the cloud with two-factor authentication (e.g. Proton Drive or Tresorit).
• 📂 Separate records by folder (for example: "Workers", "Personal", "Judicial").

How to permanently delete records

Simply removing the files from the bin is not enough, you can restore them, and you can erase the records forever.

1. Use secure removal applications (such as Secure Eraser).
2. Or manually re-write files randomly (via SD Maid).

Storage periods

Under Russian law:

• 📅 Personal records can be stored indefinitely (but not distributed).
• 📅 Work records – no longer than 3 years (unless otherwise provided in the contract).
• 📅 Records for the court - until the end of the proceedings + 1 year.

⚠️ Note: If you store records on your phone, turn off their indexing in Google Photos/Disk, otherwise they can get to the cloud and become available at the request of law enforcement agencies.

FAQ: Answers to Frequent Questions