How to turn off the microphone on the smartphone Xiaomi: privacy protection

In today’s digital world, privacy is a particularly pressing issue, and owners of Xiaomi, Redmi or POCO devices are no exception.The smartphone is constantly surrounded by a variety of sensors, and the microphone remains one of the most vulnerable places to potential data collection. Many users are wondering how to completely or partially restrict access to this module to avoid listening or accidentally activating voice assistants.

Fortunately, the MIUI shell and the new HyperOS offer advanced permission management tools. You don't need to be a cybersecurity expert to set up your system as you see fit. In this article, we'll take a look at all the ways you can lock, from simple menu settings to the use of hidden engineering modes to help you regain control of your personal space.

Now, you know, software can't completely shut down the microphone without the risk of disruption, but software isolation works, and we're going to look at how to stop specific applications from using audio input, how to turn off constant wiretapping for the OK Google team, and what indicators are signaling that the microphone is working, and this is something that everyone who values their digital hygiene needs to know.

Global Access Rights Management in MIUI and HyperOS

The first and most appropriate step is to use a built-in security center that provides granular control over each application. Unlike pure Android, Xiaomi’s shell allows you to manage rights en masse or individually for each software installed. This is a basic level of protection that must be configured first.

To start, you need to go to Settings → Privacy Protection → Permissions Management. This is a list of all the possible accesses that the program can request. Find the Microphone item in the category list. You will see a list of all the applications that have ever requested access to an audio recording. The switch next to the application name allows you to instantly deny or allow access.

Note that some system processes, like Google Assistant or voice recorder, may have priority rights. If you turn off access to a microphone for a messenger like Telegram or WhatsApp, you simply can't send voice messages, but calls over the cellular network will remain available, because they use a separate communication channel.

• 🔒 Open the settings and find the section "Privacy Protection".
• 📱 Select "Permissions Management" and tap "Microphone".
• 🚫 Consistently disable access to all suspicious or unnecessary applications.
• ✅ Leave access only for verified communication programs and voice recorder.

It can also offer a "Only during use" mode, which is the middle ground for many services, so if an application tries to record sound in the background, the system will block that request and notify you of it, and this approach allows you to use the functionality without sacrificing privacy in the background of the device.

Disabling Google’s voice assistant and constant listening

One of the main reasons the microphone can be active all the time is because it's a voice assistant, and OK, Google requires constant listening to the environment to identify the keyword, which is convenient for many users, but from a security perspective, it creates a constant channel for potential audio leakage.

To disable this feature, open the Google app on your Xiaomi smartphone. Go to the assistant settings, usually via tap on the profile avatar in the corner of the screen and select Settings. Next, select Google Assistant → Ok Google and Voice Match.

⚠️ Note: After disabling this function, activation of the assistant with voice will become impossible. You will have to run it manually through the power button or swipe from the corner of the screen if such an option is configured in the system.

Also, check your voice activity history, and in the same Google settings menu, look for "My Google activity" or "Voice activity history," where you can delete all stored records or set up automatic deletion of data over three months, which reduces the digital footprint that your conversations leave on the corporate servers.

If you are using the Chinese version of firmware or global with Google Assistant installed, make sure that the Music Recognition (Shazam or similar) feature is disabled if it is built into the lock screen. It also uses a microphone in the background to identify tracks.

Use of the privacy indicator and monitoring

Starting with Android 12 and the current versions of MIUI 12.5/13/14, there is an important visual element in the system, the privacy indicator: a small green dot that lights up in the upper right corner of the screen (near network or battery status) whenever an application accesses the microphone, and you can not ignore this signal, because it is a direct indication of the active audio module.

If you see a green light but you haven't run a voice recorder or video, pull the notification curtain down immediately, the system will show you which app is currently using the microphone, and if you click on it, you can instantly go to settings and revoke permission, which is an effective tool for detecting spyware or malfunctioning programs.

Newer versions of the HyperOS shell have expanded the functionality: when you click on the indicator or in the special section "Privacy", you can see the access timeline, it shows how many times in the last 24 hours the application has accessed the sensor, if the messenger text to the microphone 50 times a day, this is an excuse to delete or deep check.

• 🟢 A green dot in the corner of the screen signals the microphone.
• 📉 The orange dot usually indicates the use of a camera (sometimes combined).
• 🕒 Control panel shows the history of appeals over the past day.
• 🛑 Clicking on the indicator allows you to quickly block access.

It is recommended to check the access log periodically, especially after installing new applications, which helps to keep the digital hygiene of the device under control, and some users install additional widgets on the desktop for quick access to the permission log, which speeds up the monitoring process.

Hiding location and other protection functions

While the topic of this article is about the microphone, Xiaomi often has these settings alongside other security tools. The same Privacy Protection section also includes the Hiding Location (or Giving Approximate Location) feature. While this does not disable the microphone, it does not allow apps to build an accurate audio-geographic profile of the user.

Also worth noting is the Camera and Microphone feature in the Special Options or Security section, where in some regions and firmware versions, you'll find a Camera and Microphone Lock switch that software blocks access to all applications except system calls, which is the equivalent of "flight mode" only for media content.

Don't forget Safe Mode or Second Space. By creating a separate profile without suspicious apps installed, you can use your phone for important conversations, knowing that there are no programs in this isolated environment that can intercept audio. This is a radical but effective method.

Engineering menu and hidden commands (CIT Mode)

For advanced users, it is possible to check the status of the microphone through the CIT (Customer Integration Test) menu, which does not completely turn off the microphone at the kernel level without root rights, but helps to diagnose whether the device is in recording mode, access to this menu is through a set of code in the phone book.

Dial the code ##6484## or ##4636## (code may vary depending on the Redmi or POCO model). In the menu that opens, select the item associated with the microphone test (Main Mic, Sub Mic). If the idle test shows an active noise level or recording without your participation, this may indicate third-party intervention.

It is important to understand that the engineering menu is for service centers. Changing the settings in other sections of this menu (for example, in Phone Info) can lead to loss of network signal or unstable operation of the radio module.

⚠️ Note: Do not try to change the values in the engineering menu unless you know exactly what a particular parameter is responsible for).

If you find that the microphone fails the test or does not work correctly after installing an application, this is a sure sign of the need to clean the system or contact the service.

Alternative methods and applications-blockers

If standard MIUI is not enough, you can use specialized software from Google Play. There are controller apps like Access Dots or Bouncer that extend permission management functionality, and they can automatically turn off the microphone immediately after the application is closed without waiting for manual intervention.

Bouncer, for example, runs in the background and only temporarily allows you to use the microphone while the app is on the screen. Once you turn down the messenger or game, access to the audio input is instantly blocked, which creates a dynamic barrier to data collection.

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Use Auto-Cancel Permissions on Android 11 and higher. Go to Settings → Apps → Select App → Permissions. If you turn on the option “Remove Permissions If App is Not in Use,” the system will turn off the microphone for long-abandoned programs.

However, when installing third-party blockers, you should trust their developers, as they get broad rights to manage your system (Accessibility Service).Always check the reputation of the developer and reviews before installing such utilities on your Xiaomi.

Frequently Asked Questions (FAQ)

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The main conclusion: Complete microphone isolation is achieved by a combination of disabling voice assistants, strict control of permissions for each application, and regular monitoring of the privacy indicator.