What is in Xiaomi memory: hidden partitions, system files and user data

Xiaomi’s internal memory isn’t just storage for your photos and apps. Under the device’s hood lies the complex structure of partitions, system files and temporary data that keep MIUI and Android running smoothly. Many users face a lack of space without understanding where gigabytes of memory go, although there are few installed programs. In this article, we’ll take a closer look at what’s in Xiaomi’s memory, which files can be safely deleted, and which ones are strongly discouraged.

Xiaomi devices feature customized shell MIUI, which adds its own system files that duplicate the functions of standard Android. For example, here you will find two launchers (com.miui.home and com.android.launcher3), two browsers (Mi Browser and Google Chrome), and optimization utilities that themselves take up to 3-5 GB of memory. In addition, Xiaomi actively caches data to speed up the interface, which over time leads to the accumulation of garbage in the /data and /cache folders.

If you’ve ever wondered why Xiaomi is running 20GB of system on a clean firmware? or if you can delete the MIUI folder without consequences?, this article will help you understand. We’ll not only list all the key memory components, but also show you how to analyze them using built-in tools and third-party utilities, and give you tips for cleaning without risking damage to the system.

Xiaomi Memory Structure: The Main Sections and Their Purpose

The internal memory of Xiaomi smartphones is divided into several logical sections, each of which performs a different role. USB-You can't just "wipe everything" here, because deleting files from some partitions will cause the device to fail. Below is the basic structure that is relevant for most models on the computer. MIUI 12-14 and HyperOS.

The main sections of memory:

• 📁 /system — system partition with Android firmware and MIUI. Borrows from 3 before 6 GB, depending on the version. It stores the OS kernel, drivers, standard applications and libraries. Deleting or modifying files in this section requires root rights and can bring a "brick" to the device.
• 📁 /vendor — a section with proprietary drivers and firmware for iron (camera, modem, sensors). 1–2 GB. Without these files, the smartphone will not be able to work correctly with hardware components.
• 📁 /data — The user section, where you store your installed applications, their data, settings and cache, is the heaviest partition, and you can do it all the way up to the top. 50–100 GB on top models. It's the one that most often needs to be cleaned.
• 📁 /cache — Temporary files to speed up the system and applications. 200–500 MB, but can grow to several gigabytes with active use.
• 📁 /recovery — partition (MI recovery TWRP, if caste is set. 50–100 MB.
• 📁 /boot and /dtbo — Boot partitions with the kernel and device configuration, critical for system start-up.

It is important to understand that the user only has access to partition /data (folder /data/media/0, aka "Internal Memory" in Explorer). The rest of the partitions are hidden and protected from changes without special rights. For example, even if you see in the settings that "System takes 15 GB", you can not delete these files by standard means.

2. MIUI system files: what takes place out of the box

MIUI is known for being heavyweight, with even a newly installed system taking up significantly more space than Android’s naked, due to pre-installed apps, backup services and optimization utilities, and the main components that take up space immediately after you buy a smartphone.

Key system files and MIUI folders:

• 📱 Pre-installed apps: Mi Browser, Mi Video, Mi Music, GetApps, Mi Pay, Mi Home, and others, many of which cannot be removed without root rights, but you can disable in settings (Settings) → Annexes → Application management).
• 🔄 Duplicate services: For example, in MIUI There is a download manager (com.android.providers.downloads.ui) and a separate Mi Download Manager (com.xiaomi.midrop).

One of the most voracious elements is the /MIUI/Extra folder, which contains backups of the rollback firmware (update.zip), temporary update files and data for recovery. On some models (for example, Xiaomi 12T or Redmi Note 11 Pro+), this folder can take up to 3-4 GB, although the user never sees it in the explorer.

⚠️ Note: Do not attempt to manually delete files from folders /MIUI or /data/app It's rootless. It can cause disruption. MIUI, For example, to the disappearance of design topics or errors during the update.

3. User data: where are stored photos, videos and application files

Most of the internal memory is the data that the user creates: photos, videos, music, documents, and cache and application files. Unlike system partitions, this data can be managed without risking device stability. But even here there are nuances, for example, some applications store data in hidden folders that are not visible in a standard Explorer.

Main folders with user data:

• 📸 DCIM — Photos and video from the camera (DCIM/Screenshots) and recorded screens (DCIM/ScreenRecords). On modern smartphones (for example, Xiaomi) 13 Ultra one video in 4K weigh 500–800 MB.
• 🎵 Music, Movies, Downloads — media files and downloads. Often duplicate files are accumulated here, especially if you use multiple browsers or messengers.
• 📁 Android/data and Android/obb — For example, games like Genshin Impact or Call of Duty Mobile can take up to here. 10–15 GB.
• 📧 WhatsApp/Media, Telegram/Telegram Images are media files from messengers. Even if you delete a photo in a chat, it can stay in this folder.
• 🔍.thumbnails is a hidden folder with thumbnails for a gallery. It can weigh 100-500 MB, although the user does not need these files.

Special attention should be paid to the folder Android/data. Many applications (e.g. TikTok, Instagram, Google Maps) store not only cache, but also downloaded data (story, offline cards, temporary files), and the standard cache cleaning in the application settings often does not affect these files. 1–2 GB, and TikTok - accumulate to 500 MB cache for a month of active use.

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To see the real size of folders in Android/data, use a root-access file manager (such as Solid Explorer) or connect your smartphone to your PC in MTP mode and enable the display of hidden files.

4. Hidden files and cache: what can be safely deleted

One of the main memory eaters on Xiaomi is hidden cache files, temporary data and duplicates that accumulate over time. They are not visible in standard Explorer, but they can take up to 5-10 GB on a actively used device.

Safe to delete files and folders:

• 🗑️ The.thumbnails folder is a gallery thumbnail, and it's deleted without any consequences, because the system will regenerate it the next time you open the photo.
• 🧹 Cache of applications in Android/data/*/cache. Can be cleaned manually or through settings → Memory. → Clear the cache.
• 📥 Downloads from browsers (Download, Mi) Browser/Downloads). Often unnecessary things are accumulated here. APK, PDF archives.
• 🔄 Duplicate photos and videos. MIUI There is a built-in tool for finding duplicates: Gallery → Albums. → Duplicate.
• 📦 APK-update files /data/app (For example, after updating applications through GetApps, the old ones APK may remain in memory.

For deep cleaning, you can use built-in MIUI tools:

1. Go to Settings. → Memory.
2. Click "Clean" - the system scans unnecessary files (cache, temporary data, empty folders).
3. To remove duplicate photos, use the Gallery → Smart cleaning.
4. To remove old APKs, go to Settings → Applications → Application Management → Installed Files.

⚠️ Note: Do not manually delete files from folders /data/dalvik-cache or /data/app-lib. This can lead to the crash of applications or a complete restart of the device. To clean these folders, use only specialized utilities (for example, use special utilities, SD Maid) or factory discharge.

Delete folder.thumbnails| Clear cache in Settings → Memory | Check duplicate photos in Gallery | Delete old APKs in Settings → Applications | Clear downloads in Download--> folder

5. How to analyze occupied space: tools and commands

To understand exactly what is taking up space in Xiaomi memory, it is not enough to look into a standard Explorer. The system hides many files, and some folders (for example, /data) are not available at all without root rights.

Memory analysis methods:

• 📊 Built-in utility MIUI: Go to Settings. → Memory. This shows the total amount of space occupied by category (system, applications, media, etc.) Minus -- there's no detailed information on specific files.
• 🔍 File Manager with root access: Applications like Solid Explorer or FX File Explorer will show hidden folders and their size. ADB.
• 📈 Third-party analyzers: Applications like DiskUsage or Storage Analyzer visualize occupied space in diagrams.

If you want to get the most detailed information without root rights, use a combination of ADB and file managers. For example, to see the size of the folder with WhatsApp data, do:

adb shell du -sh /data/media/0/WhatsApp

This command will show the exact weight of the folder, including hidden files.

6.Memory optimization: from cleaning the cache to transferring data to a memory card

When Xiaomi runs out of memory, many users simply delete photos or apps, unaware that it is possible to free up 5-15 GB without losing important data.

Ways to make room:

• ☁️ Use of cloud storage: - B MIUI Mi Cloud integrated (gives 5GB for free) Automatic photo upload: Gallery → Settings → Backup. - Alternatives: Google Photos (unlimited storage in compressed quality) or Yandex Drive.

On some Xiaomi models (e.g. Redmi Note) 10 pro POCO X3 Pro) folder /data/media/0 (internal memory) can be encrypted, in which case the transfer of data to SD-map or PC connection in mode MTP It may not work without entering a password.

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The most effective way to free up space is to combine cleaning the cache, removing duplicate photos, and transferring rarely used applications to the cloud or to the cloud. SD-This allows you to free up to 30% of memory without compromising functionality.

7 Frequent errors in memory and how to avoid them

Many Xiaomi users make the same mistakes when trying to free up space, resulting in data loss or device failures. Consider the most common mistakes and ways to prevent them.

Typical errors:

• ❌ Removing Android folder manually: - Consequences: crashing installed apps, losing saves in games. - Correct: clear the cache of specific apps through Settings → Annexes.
• ❌ Formatting of the section /data without backup: - Consequences: complete loss of user data (photos, contacts, messages). - Correct: before reset, make a backup through Settings → Additionally. → Backup.
• ❌ Use of “memory cleaners” from the Play Market: – Consequences: Many such applications (such as Clean Master) take up space themselves and show false warnings about “memory state critical.” MIUI or proven utility like SD Maid.
• ❌ Transfer of system applications to SD-Map: - Consequences: The smartphone may stop loading or work unstable. - Right: port only user applications (games, instant messengers).
• ❌ Deletion of files from /system without root: - Consequences: the device will not turn on (reflashing required). - Right: do not touch system partitions without knowing the consequences.

Another common mistake is ignoring firmware updates: newer versions of MIUI and HyperOS often optimize memory, add garbage cleaners, and reduce system file sizes, such as HyperOS (starting with Xiaomi 14), which compresses the app cache automatically, saving up to 20 percent of space.

⚠️ Note: If after cleaning the memory, the smartphone began to work slower, check the settings in Settings → Additionally. → For developers → Do not save actions. If this setting is on, the system does not cache frequently used applications, which leads to brakes.

FAQ: Answers to Frequent Questions About Xiaomi Memory