MIUI Daemon on Xiaomi Redmi: hidden features and system security

If you’ve ever looked into your Xiaomi Redmi Task Manager or analyzed active processes through ADB, you’ve probably noticed the mysterious MIUI Daemon service, a background process that often raises questions among users about whether it’s critical to the firmware, or whether it’s just another “junk” component that eats up battery power. In this article, we’ll take a closer look at what MIUI Daemon is, how it relates to the MIUI architecture, and why it shouldn’t be removed even by advanced users.

We'll mark it right away: MIUI Daemon is not a virus or an ad module, but a system demon (background service) that is responsible for performing mission-critical tasks in Xiaomi firmware. MIUI, such miui_optimization However, its behavior may vary depending on the firmware version, smartphone model (for example, Redmi Note). 10 Pro vs Redmi 9A) and even regional assembly (Global, China, EEA).

The main problem is that Xiaomi doesn't document the process for ordinary users, and it creates myths, some of which believe that MIUI Daemon spy on users, others that it is responsible for automatically updating the firmware. In fact, its functions are much broader and narrower at the same time. Next, we'll figure out what it does, how to check its activity, and what happens if you try to turn it off.

What is MIUI Daemon and why is it necessary?

MIUI Daemon (sometimes referred to as Daemon) miui_daemon com.xiaomi.miui.daemon is a system service that acts as an intermediary between the user interface. MIUI And the low-level components of Android:

• 🔄 Background Process Management: Optimizes Applications by Closing Unnecessary Tasks and Freeing Up Xiaomi Algorithms.
• 🔒 Security control: Interacts with SecurityCenter by blocking suspicious activity (e.g. unauthorized access to system files).
• ⚡ Performance optimization: adjusts processor frequency and power consumption depending on the use case (games, video viewing, background work).
• 📱 Integration with Xiaomi services: provides the work of branded features such as Second Space, App Lock or Game Turbo.

It is important to understand that MIUI Daemon is not a single application, but a set of several subprocesses that are triggered automatically when you turn on your smartphone. miui_daemon_watchdog (tracks the hangings) or miui_daemon_cleaner (It cleans the cache. These components are closely related to the kernel. MIUI, and their forced termination may lead to unstable operation of the system.

On some Redmi models (e.g. Redmi) K40 Or the Redmi Note 11 Pro.+) This demon is also responsible for processing. OTA-If you've ever seen a "Prepare to Update" notification before you install a new firmware, that's the job. MIUI Daemon, which checks file integrity and backs up system partitions.

How to check the activity of MIUI Daemon on your Redmi

If you want to make sure that MIUI Daemon works on your device, there are a few ways to check it out, and the easiest way to do that is to use a built-in Task Manager:

1. Open Settings → Applications → Task Manager.
2. Click on the three dots in the upper right corner and select Show System Processes.
3. In the list, find MIUI Daemon or com.xiaomi.miui.daemon.

A more advanced method is the analysis using ADB (Android Debug Bridge).

adb shell ps -A | grep miui_daemon

This command will display all the active processes associated with the demon. On Redmi with MIUI 14 firmware and later, you can also use the hidden test menu:

#4636## → Information about the battery →

The list of system processes will be displayed here. MIUI Daemon with charge consumption and activity time. Note: on some devices (e.g. Redmi) 10C) This process may be disguised under other names, such as miui_optimization_service.

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If you see in Task Manager that MIUI Daemon is using more than 5% charge per hour, that's a sign of a failure. Try restarting your phone or resetting to factory settings.

The Impact of MIUI Daemon on Performance and Battery

One of the most common questions is, does MIUI Daemon consume battery power? The answer is ambiguous: In normal conditions, this process consumes minimal energy (usually less than 1% per day), because it is only activated when needed.

• 🔄 After a firmware update: The demon checks the integrity of system files and optimizes them.
• 📱 When you first launch a new application: analyzes its behavior for further optimization.
• 🔒 When scanning for viruses (if Security Scan is enabled).
• ⚡ In game mode (when activating Game Turbo).

If you notice that MIUI Daemon is constantly loading the processor or draining the battery, this may be due to:

Critical information: On devices with a MediaTek processor (e.g. Redmi) 9T Redmi Note 11) Compulsory termination MIUI Daemon can lead to a “brick” due to the nature of the interaction with the kernel, which is due to the fact that MediaTek uses its own drivers to manage power consumption, which are closely integrated with demons. MIUI.

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MIUI Daemon is not a virus, but its high activity may indicate firmware problems or conflict with custom modifications.

Can I disable or remove MIUI Daemon?

The short answer is no, you can't. The long answer is, technically, it's possible, but it's got serious consequences. MIUI Daemon is part of the system kernel, and deleting it is the equivalent of deleting critical Android libraries. Here's what happens if you try to turn it off:

⚠️ Note: On devices with a blocked bootloader (bootloader), any manipulation of the device MIUI Daemon activates anti-Rollback protection, which means the phone may lose its ability to receive official updates forever.

If you want to reduce your impact on the system, there are a few safe ways to do this:

Disable Automatic Optimization in Settings → Battery → Optimization

Uninstall unnecessary system applications via ADB (e.g. Mi Video or Mi Music)

Disable Security Scan in Settings → PapaSSWORD & SECURITY

Reset the settings MIUI Optimization through #4636##-->

For power users, there is a method of partial disabling via Magisk:

1. Install the Disable MIUI Optimization module in Magisk.


2. Reboot the phone.




3. Check the activity of the demon through adb shell top -n 1 | grep miui.

Even then, however, some features (like Second Space or App Lock) will stop working. On Redmi with Qualcomm Snapdragon processors (like Redmi K50), this can lead to errors in the camera or NFC module.

MIUI Daemon and Safety: Myths and Reality

There are a lot of rumors online that MIUI Daemon is spying on users or sending data to China, and let's see what's true and what's not.

Myth 1: MIUI Daemon collects personal data.

Reality: The Demon does interact with Xiaomi servers, but only to check for updates and sync your Mi Account account. It doesn't have access to your photos, messages or passwords. All the data transmitted is encrypted using HTTPS.

Myth 2: It slows down the phone specifically to make you buy a new one.

Reality: MIUI Daemon does close the background processes, but it's standard practice for all firmware (including stock Android).On Redmi with 4GB of RAM or less, it may be more noticeable, but it's not a "conspiracy" but an attempt to extend battery life.

Myth 3: It can be replaced by a Google analog.

Reality: No. MIUI Daemon is tightly integrated with the MIUI core, and replacing it with Android Runtime or Google Play Services will result in a total system failure.

If you are concerned about privacy, you can:

• 🔒 Disable synchronization with Mi Cloud in account settings.
• 📵 Use it. VPN blocking suspicious connections.
• 🛡️ Install custom firmware (like LineageOS), but this voids the warranty.

MIUI Daemon on different Redmi models: features

The MIUI Daemon behavior may vary depending on the Redmi model and firmware version, and consider the most common scenarios:

1. Redmi with Snapdragon processor (e.g. Redmi K50, Redmi Note 11 Pro+ 5G):

On these devices, the demon is more aggressive in optimizing background processes, which can lead to spontaneous closure of applications, because Qualcomm provides Xiaomi with advanced power management tools.

2. Redmi with MediaTek processor (e.g. Redmi 10C, Redmi 9A):

Here, Daemon MIUI is closely integrated with HyperEngine technology, which is responsible for gaming performance. its shutdown can lead to a drop in FPS in games and unstable Game Turbo operation.

3. Redmi on MIUI 13 and older (Redmi Note 12, Redmi K60):

In new firmware versions, the demon has additional features, such as:

• 🔄 Adaptive optimization: analyzes user habits and adjusts the system to them.
• 🛡️ Improved phishing protection: Blocks suspicious links in messages.
• ⚡ Dynamic RAM Expansion: temporarily reserves part of the ROM for RAM.

4. Redmi on custom firmware (e.g. PixelExperience, ArrowOS):

If you have installed an alternative firmware, MIUI Daemon will be disabled automatically, as it is replaced with similar services from Google or the development community, but some features (such as IR Blaster or Quick Apps) may stop working.

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On devices with MIUI 14 and later, Daemon is responsible for MIUI+ (PC integration) and will cut the connection between the phone and the laptop.

Mistakes related to MIUI Daemon and their solutions

If MIUI Daemon is starting to behave in an unstable way, it can be as follows:

• 🔄 Permanent reboots (the phone spontaneously reboots).
• 📵 Network losses (mobile internet or Wi-Fi disappears).
• ⚠️ Errors in the installation of applications (“Failure to install the package»).
• 🔋 Quickly discharge the battery (even in standby mode).

Here’s how to solve the most common problems:

⚠️ Note: If you have been manipulated by MIUI Daemon phone stopped turning on (hang on the logo) MIUI), Don't try to stitch it through. SP Flash Tool without backup NVRAM. On devices with MediaTek, this can lead to loss. IMEI.

If none of the methods worked, the last option is a complete reset:

1. Go to Settings → About the phone → Reset settings.
2. Select Delete all data.
3. Confirm the action and wait for the reboot.

After the MIUI reset, Daemon will resume operations as normal.

FAQ: Answers to popular questions about MIUI Daemon