Filled app on Xiaomi: what it is, why you need it and how to work with it

If you recently upgraded your Xiaomi smartphone firmware or bought a new model, you may have noticed the mysterious name Filled on your app list. It doesn't have a desktop shortcut, doesn't show up in the All Apps menu, but it takes up space in memory and sometimes appears on the active processes list. What is it, why is it installed on your device and should you remove it? In this article, we'll go through all aspects of Filled's work, its relationship with the Xiaomi ecosystem, and give practical recommendations for managing this component.

Filled is not a virus or spyware, despite its “suspicious” behavior. It is a system service that Xiaomi has integrated into its devices since MIUI 12.5 to optimize the work with files and cache. However, its features are not always obvious to users, and the lack of documentation from the manufacturer breeds myths. Next, you will learn how Filled interacts with other Xiaomi services, what data it processes and why it can not be simply uninstalled through standard settings.

What is Filled and why did it appear on your Xiaomi?

Filled (full name com.miui.filled) is a system application that is responsible for managing cached data and optimizing file storage in MIUI firmware. It is closely related to the work of other components, such as:

• 📁 Cleaner – Filled helps identify unnecessary files for removal;
• 🔄 MIUI Optimization – Optimizes background processes to reduce processor load;
• 📊 Security App – Interacts with antivirus to check cached data.

The app appeared in MIUI 12.5 as part of Xiaomi’s initiative to improve device performance through smarter memory management, for example, if you use the same app frequently (like Instagram or Telegram), Filled keeps its cache a priority so that it opens faster the next time it runs, but there’s a downside to this mechanism: sometimes it takes up too much space or conflicts with user settings.

It’s important to understand that Filled is not a standalone application in the usual sense, but a system service that runs in the background. It can’t be run manually, but can be seen in the process list through Settings → Applications → Application Management → All applications (if you turn on the system display).

The main functions of Filled: why you need it

Filled performs several key tasks that directly affect the operation of the smartphone.

One of Filled’s most controversial features is automatic cache cleaning, which frees up space on the one hand, but can also delete data that a user would like to save (such as offline card cache in Google Maps or uploaded episodes in YouTube Premium), and Filled sometimes conflicts with manual cleaning settings, where the user manually deletes the cache and the service recovers it over time.

Filled doesn't send your data to Xiaomi or third parties, it works only locally on the device. All cache and file management operations take place inside the smartphone, without transmitting information over the network, and this is confirmed by analyzing the application's traffic using tools like NetGuard or PCAPdroid.

How to check how much space Filled takes

To understand how Filled affects your device's memory, you can check the amount of data it occupies.

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the upper right corner and select Show All Applications (or System Processes, depending on the version of MIUI).
3. In the search box, type Filled or com.miui.filled.
4. Open the app card and see the Memory section.

A typical Filled data volume ranges from 50 to 200 MB, but in some cases can reach 500 MB or more if the service has not been cleaned for a long time. For example, on devices with MIUI 13/14, after several months of use, Filled can accumulate up to 1-1.5 GB of cache, especially if social networks, messengers or streaming services are actively used.

If you see that Filled takes up too much space, you can try to clean its cache manually:

However, keep in mind that after cleaning the service will start to re-accumulate data, so the radical solution is to disable or delete Filled (we will talk about this later).

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If Filled grows back quickly after cleaning the cache, check the auto-cleaning settings in MIUI Optimizer (Settings → Special Features → System Optimization).

Can I remove Filled and how to do it?

Technically, you can remove Filled completely, but that requires superuser rights (root) or the use of ADB (Android Debug Bridge). Without root rights, you can only disable the application, which will reduce its impact on the system, but not remove it completely. Let's consider both options.

Method 1: Unplug without root (safe method)

This method is suitable for most users and does not require special knowledge:

1. Go to Settings → Applications → Application Management.
2. Find Filled (or com.miui.filled) through search.
3. Click Disable (if the button is inactive, click Stop first).
4. Confirm the action in the dialog window.

After disabling, Filled will stop working in the background, but its files will remain in the system. This is a safe way, since it does not affect critical components of MIUI.

Method 2: Removal via ADB (for advanced)

If you have experience with ADB, you can remove Filled completely.

1. Activate Developer Mode (Settings → About Phone → 7 times click on the MIUI version).
2. Enable USB debugging in the developer settings.
3. Connect your phone to your PC and execute the command: adb shell pm uninstall --user 0 com.miui.filled

⚠️ Warning: Removing system applications can lead to unstable work MIUI, especially if Filled is linked to other services (e.g. Cleaner or Security) and back up your data before deleting it!

Filled and Security: Worrying About It

One of the most common questions users ask is, is Filled spyware? No, it's an official MIUI component, and it's limited to local operations on the device.

• 🔍 File access: Filled has the rights to read and modify the cache of applications, but cannot access personal data (photos, messages, passwords).
• 📡 Network activity: The application does not transmit data over the network (this is confirmed by tests using Wireshark and NetGuard).
• 🛡️ Interaction with Security App: Filled can send cache data to Security App to scan for viruses, but it happens locally.

However, if you’re paranoid about privacy, you can limit Filled’s rights with tools like App Ops (requires ADB or root):

1. Install App Ops from the Play Market.
2. Find com.miui.filled in the list of applications.
3. Turn off storage and background activity permissions.

⚠️ Note: Restricting Filled rights may cause Cleaner and other system utilities to malfunction, such as automatic garbage cleaning will stop working and manual cleaning will be less efficient.

Filled alternatives: how to replace the system service

If you have disabled or removed Filled, but want to keep the functionality of cache and memory optimization, you can use third-party applications.

If you are concerned about cache optimization, rather than general cleaning, you can use the built-in Android tools:

• 📱 B Settings → Memory is available in detail by category (cache, multimedia, documents).
• 🔄 B Settings → Applications can manually clear cache for each application.
• ⚡ V MIUI 14 Smart Cleaning feature appears, which partially replaces Filled.

For example, SD Maid can remove cache too aggressively, which will slow down the work of commonly used programs, so it is recommended to test them for a few days before using alternatives.

Frequent Filled Problems and How to Solve Them

Despite its usefulness, Filled sometimes crashes or malfunctions, and here are the most common problems and ways to solve them:

• 📈 Filled takes up too much space: Solution: Clean the cache manually (see instructions above) or disable the application. If the problem recurs, check if Filled is in conflict with other optimizers (such as Greenify or Battery Guru).
• 🔄 Permanent Cleanup Notifications: Solution: Turn off notifications for Filled in the app settings or in the Settings menu → Notifications.
• ⚡ Device brakes after Filled: Solution: It may be that the service is in conflict with background processes. Try turning it off for a few days and watch the performance.
• 🚫 Unable to disable Filled: Solution: If the Disable button is inactive, use ADB For forced shutdown: adb shell pm disable-user --user 0 com.miui.filled

If you notice that Cleaner has stopped working correctly after disabling Filled, try resetting it:

1. Go to Settings → Applications → Cleaner.
2. Press Warehouse. → Clear the data.
3. Reset the device.

⚠️ Note: If after manipulation with Filled, the system begins to behave unstable (for example, often restarts or gives errors), return it to its original state through the use of the system. ADB:

adb shell pm enable com.miui.filled

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Disabling Filled does not result in a loss of warranty, as it is a system application, not a firmware modification, but uninstalling it via root may void the warranty if it causes a failure.

FAQ: Answers to popular questions about Filled