Hidden recording of a conversation on Xiaomi: how to turn on a voice recorder without notifying the interlocutor

Recording phone conversations on Xiaomi smartphones (including Redmi and POCO models) is a topic that has raised questions among users. On the one hand, the voice recorder feature is built into MIUI firmware and allows you to record calls in one click. On the other, most countries strictly regulate audio recording without the consent of the interlocutor. In this article, we will analyze the technical methods of recording (including hidden ones), analyze the legal consequences and offer alternative solutions for the legal use of the feature.

It is important to understand that even if your Xiaomi supports recording calls, automatic notification of the interlocutor about recording (required by the laws of many countries) is often manually disabled. The manufacturer is not responsible for the misuse of the feature - the user takes over the entire legal burden. Below you will find detailed instructions for different versions of MIUI, comparing the built-in voice recorder with third-party applications, and a list of countries where hidden recording of conversations can lead to criminal liability.

Legal risks: where is recording without consent prohibited?

Before you activate a recording of conversations on Xiaomi, check the laws of your country. In most European countries, the United States and Canada, bilateral consent to the recording is mandatory, which means that you must notify the interlocutor of the recording of the conversation before it begins, otherwise the recording will not have legal force and you can be prosecuted.

In Russia, the situation is twofold: according to Art. 138 of the Criminal Code, recording a conversation without consent is allowed if you are a participant in it. However, using such a recording in court or distributing it without the permission of the interlocutor can be qualified as a violation of the right to privacy of correspondence (Article 137 of the Criminal Code of the Russian Federation).

• 🇷🇺 Russia: Recording for personal use allowed, but distribution without consent prohibited.
• 🇺🇦 Ukraine: At least one of the interlocutors must agree (your participation in the conversation is sufficient).
• 🇰🇿 Kazakhstan: Recording without consent punishable if used for blackmail or distribution.
• 🇪🇺 EU (Germany, France, etc.): Bilateral consent is mandatory, otherwise a fine of up to 20,000 €.
• 🇺🇸 Laws vary by state (California requires consent of all participants).

⚠️ Note: Even if the recording is permitted in your country, its use in litigation can be blocked if the interlocutor proves that he was not notified. Xiaomi has automatically enabled voice notification of the recording by default – its deactivation can be considered a deliberate concealment.

Built-in voice recorder in MIUI: how to turn on call recording

Xiaomi smartphones based on MIUI 12-14 have built-in call recording, but its settings depend on the model and the firmware region. On some devices (for example, Redmi Note 12 Pro+ or POCO F5), the option is available by default, on others it is hidden.

1. Open the Phone app.
2. Go to Settings. → Recording of conversations.
3. Turn on the Automatic Record switch or select Record manually.
4. In the Notice of Record section, mark Disable Voice Alert (if hidden recording is required).

On the European firmware (MIUI EU), the recording option may be blocked due to local laws, in which case changing the device region to India or Russia through Settings → Additional → Region will help.

Check out the MIUI version (should be 12+)

Make sure there is a "Records" tab on the phone

Turn off automatic notification (if you need to hide the record)

Check the space available (records take ~1 MB/minute)

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If your firmware doesn't have a recording function, you can unlock it through a hidden menu of engineering settings.

1. Open the Phone app.
2. Enter the code: ##6484## (for MediaTek) or ##4636## (for Snapdragon).
3. Go to Audio → Call Record and turn on the option.

⚠️ Warning: Engineering menus can damage firmware if you have incorrect settings. Create a backup before changing via Settings → Memory. → Backup.

Comparison of built-in voice recorder and third-party applications

Xiaomi’s built-in voice recorder has limitations: it is recorded in.amr format with a low bitrate (16 kbit / s), which worsens voice quality. Third-party applications (such as Cube Call Recorder or ACR) offer advanced features:

To install third-party voice recorders, you may need permission to access calls, which is blocked on new versions of Android. ADB:

adb shell pm grant com.android.callrecorder android.permission.RECORD_AUDIO


adb shell pm grant com.android.callrecorder android.permission.READ_CALL_LOG




adb shell pm grant com.android.callrecorder android.permission.WRITE_CALL_LOG

Built-in dictaphone Xiaomi

Cube Call Recorder

ACR (Another Call Recorder)

Other appendix

I don't record conversations.-->

How to hide the recording of a conversation from the interlocutor: technical nuances

Even if you have disabled the voice notification in the settings of Xiaomi, the interlocutor may suspect the recording by indirect signs:

• 🔊 Noise artifacts: An embedded voice recorder sometimes gives off a slight echo or background noise due to audio compression.
• 📶 Falling Communication Quality: Simultaneous recording and voice transmission over the network can reduce connection bitrate.
• 🔋 Fast battery drain: Continuous recording increases the CPU load (especially on Redmi budget models).
• 📁 Notification in status bar: On some firmwares, a microphone icon appears, which can be hidden through Settings → Notifications → Systemic icons.

To minimize the risk of detection:

1. Use an external voice recorder (e.g. Sony ICD-UX570) connected via Bluetooth, which eliminates software artifacts.
2. Configure the recording of only incoming audio (your voice is not fixed, which reduces the load).
3. Turn off battery optimization for the recorder app to avoid interrupting the recording.

Alternative recording methods: without using a voice recorder

If the built-in recording feature is blocked or you want to completely hide the fact of recording a conversation, consider alternative methods:

1. Second second SIM-Card: Use a second phone (e.g. Xiaomi Redmi) A2) in hands-free mode and record sound through an external voice recorder.
2. Google Voice: The service allows you to record incoming calls after pressing key 4 (only works for US/Canada numbers).
3. Conference: Connect a third number (such as via Zoom or Skype) and record the conversation on it.
4. Hardware: Devices like the Olympus TP-8 connect to a phone line and record audio without software.

The most reliable way is to record through a computer.

1. Connect Xiaomi to your PC via USB (in File Transfer mode).
2. Install scrcpy (to display the screen) or Audacity (to record audio).
3. Turn on speakerphone on your phone and record sound through your PC microphone.

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If you're recording a conversation for judicial purposes, save the original file without editing. Any changes (short-up, amplification) could be considered falsification of evidence.

What to do if the record is not saved or disappears?

The problems with retaining records on Xiaomi are often related to:

• 🗑️ Memory Lack: Records take up ~1 MB/minute. Clear the cache through Settings → Memory. → Cleanup.
• 🔄 Phone app crash: Reinstall the update through the Play Store → My apps. → Phone. → Remove updates.
• 🔒 The Limitations of Android 12+: On the new OS, applications are not allowed to access calls. ADB (guide).
• 📡 Network problems: If the signal is bad, the recording may be interrupted.

If records disappear after a reboot, check the save path:

1. Open the files. → Internal memory. → MIUI → sound_recorder.
2. If the folder is empty, change the save path in the voice recorder settings to SD-map.

⚠️ Note: Some Xiaomi models (such as the Mi 11 Ultra) encrypt records and don’t play on other devices. MIUI File Explorer with Developer Mode enabled.

How to protect your conversations from recording?

If you fear that your conversations may be recorded without consent, use the following measures:

• 🔇 Turn off speakerphone: Recording through the phone microphone is less high quality than through the speaker.
• 📵 Use messengers with E2E-Encryption: In Signal or WhatsApp (with encryption enabled), recording a call is technically impossible without hacking your device.
• 🔄 Check active processes regularly: Apps like Task Manager show which programs are using the microphone.
• 📡 Block suspicious numbers: C Settings → Blocking numbers can add contacts, calls from which will not be recorded.

For complete certainty, use disposable numbers (services like Burner or TextNow) or hardware scramblers (like KryptAll) that distort your voice and make the recording useless.

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Recording a conversation without consent can be used against you in court, even if you were originally a party to the conflict, and always notify the person about the recording if you plan to use it for legal purposes.

FAQ: Frequent questions about recording conversations on Xiaomi