How to completely disable wiretapping on the Xiaomi Redmi phone: 7 working ways

Xiaomi Redmi smartphone owners often wonder if they can 100% eliminate the risk of wiretapping through an embedded microphone. In the face of growing cyber threats and data leak scandals, this topic has become especially relevant. It is important to understand that modern Android devices (including the Redmi Note 12, Redmi 10 or POCO X5) have several channels of potential audio capture — from system services to third-party applications. In this article, we will analyze all possible vectors of audio leakage and offer proven methods for blocking them, including hidden MIUI settings, hardware solutions and software tools.

Note: full warranty of protection against wiretapping is possible only when the microphone is physically disabled (dismount or hardware switch), since software methods are vulnerable to exploits with superuser rights. This article is relevant for devices on MIUI 14/15 (Android 12-14) and adapted to the features of Xiaomi firmware for the Russian market.

1. Verification of microphone permissions for applications

The first step is to audit applications that have access to the microphone. Even legitimate programs (like Google Assistant or Mi AI) can record sound in the background. In MIUI, this control is implemented through the Settings menu → Applications → Permissions → Microphone.

Open the list and pay attention to:

• 🔍 Permanently accessed apps (like WeChat or TikTok) are known for collecting audio data for targeted advertising).
• 🚫 Unknown programs with Chinese characters in the title (often these are Xiaomi system services, but some may be malicious).
• 🔄 Applications that request microphones “to improve functionality” (e.g. games or flashlights).

Turn off all suspicious applications. If a program stops working after that, it's a direct sign that it's misused the microphone. For system services (e.g. Mi Voice), it's best to use background activity restriction through Settings → Battery → Background Restriction.

💡

If you see the com.miui.voiceassist app in the permission list, it's Xiaomi's voice assistant. It can be completely disabled via Settings → Additional → Special Features → Voice Assistant if you don't use voice control.

2. Disconnection of system services of wiretapping

MIUI contains several built-in mechanisms that can theoretically be used for audio recording:

Pay special attention to Mi AI, which sends data to Xiaomi servers to “improve the user experience.” In 2023, researchers at Kaspersky discovered that Mi AI can activate the microphone even when the screen is turned off if the Voice Awaken option is turned on. Turn it off in the Settings → Voice Control menu.

3. Locking the microphone at the hardware level

If you want an absolute guarantee that the microphone cannot be activated by any software (including root-access viruses), consider hardware methods:

• 🔧 Physical microphone shutdown: Most Redmi models (like the Redmi Note 11) have a flexible loop on the motherboard, which can be neatly disconnected at the service center, and minus the ability to call and record audio videos.
• 🔇 Use plug: Insert a dense material (such as a silicone plug) into the microphone connector (usually next to the speaker) that will block the acoustic signal, but will not shut down the electrical circuit.
• 📱 Hardware switch phone: Some models (like Fairphone or Librem 5) have physical switches to turn off the microphone/camera. Xiaomi doesn’t have this solution, but you can use a lock-enabled protective case.

For users who are ready to take radical measures, there is a modification of the "De-Mic Mod" - flashing the microphone chip at the level of the computer. EDL-This method requires soldering and is only suitable for experienced users. 4PDA In the topics dedicated to specific Redmi models.

💡

Hardware shutting down the microphone is the only way to protect against wiretapping through root exploits or firmware vulnerabilities.

4. Alternative firmware without backdoors

MIUI stock firmware contains closed components from Xiaomi that could potentially be used to collect data. Alternatively, installing custom firmware based on AOSP (e.g. LineageOS or Pixel Experience).

• 🛡️ No pre-installed Chinese services (Mi Cloud, Mi) AI etc.).
• 🔄 Regular security updates from the community.
• 🔧 Full permission control via AppOps.

Installation process:

1. Unlock the bootloader via fastboot oem unlock (requires a wait of 7-14 days for new devices).
2. Install TWRP Recovery for your model.
3. Sweep LineageOS or other firmware through adb sideload.

Cons: loss of warranty, possible camera or sensor bugs (especially on new Redmi models), lack of official support for Widevine L1 (no HD on Netflix).

5.Spyware and backdoor checks

Even if you've disabled all permissions, you can have spyware installed on your phone that exploits vulnerabilities to covertly activate the microphone.

• 🔋 Unusual battery consumption (microphone consumption) ~0.1-0.3 Wh active).
• 📶 Increased traffic in the background (checked through Settings) → SIM-maps and mobile networks → Traffic).
• 🎤 Extraneous noises during calls (clicks, echoes).

Use:

• 🛡️ Malwarebytes (free version checks spyware modules).
• 🔍 NetGuard (monitoring network activity of applications).
• 📊 Battery Historian (Analyzes Energy Consumption with a Microphone).

If suspicious software is detected, remove it and reset it to factory settings via Settings → About Phone → Reset. Use the fastboot command for deep cleaning:

fastboot erase userdata


fastboot erase cache

💡

After reset, don't restore data from Mi Cloud or Google Drive backups - they may contain malicious files.

6. Additional security measures

In addition to locking the microphone, we recommend:

• 🔒 Disable Mi Cloud: Xiaomi sync service can transmit metadata about microphone usage. disable it in Settings → Accounts. → Mi Cloud.
• 🌐 Use it. VPN: Some apps only activate the microphone when connected to certain devices. IP (For example, Chinese servers). VPN The US/Europe will help prevent this.
• 📵 Aircraft mode in sensitive locations: Physically disables all communication modules, including potential audio data transmission.
• 🔊 Check for "ultrasonic beacons": Some applications use high-frequency signals to track.Install Ultrasonic Detector from F-Droid.

For Redmi models with IR-With a blaster (e.g., Redmi Note 10 Pro), there is a risk of using an infrared port to transmit data. → Connections → IR-blaster, if you do not use the remote for technology.

7. Legal aspects and myths about wiretapping

In Russia and the EAEU countries, wiretapping without court sanction is prohibited (Article 138 of the Criminal Code of the Russian Federation), however:

• ⚖️ The manufacturer (in this case, Xiaomi) has the right to collect anonymized data about the use of the device, if this is prescribed in the user agreement.
• 🕵️ Security services can access the microphone through a communications operator (by court order) even if the phone is turned off (fake shutdown technology").
• 📱 The myth of “wiretapping through the speaker”: The speaker can not be used as a microphone on modern smartphones due to the lack of feedback in the circuit.

If you suspect targeted wiretapping (e.g. corporate espionage), contact a mobile forensics expert who can analyze a memory dump for spyware (e.g., Pegasus or XAgent), which costs from 15,000 rubles in Moscow.

💡

None of these measures protect against targeted government attacks, and if you want absolute privacy, use a separate device without a microphone (like Bittium Tough Mobile) or specialized communication tools.

FAQ: Frequent questions about wiretapping on Xiaomi Redmi