How to Clean Up Android Memory on Xiaomi if It’s Clogged with Invisible Files

Your Xiaomi constantly issues warnings about memory shortages, even though you have long since deleted all unnecessary apps and photos? The problem lies in the invisible files that accumulate in the system: app cache, remnants of deleted programs, temporary data and hidden MIUI folders. These files can take up to 10-15 GB of memory, without displaying in a standard Explorer.

Unlike visible debris, hidden files require a special approach. A typical cleaning through a smartphone setting removes only the tip of the iceberg, leaving the bulk intact. In this article, we will discuss 7 proven ways to deep-clean memory on Xiaomi, including working with system folders, ADB-teams and specialized utilities – without the risk of damaging important data.

Why Xiaomi’s memory is clogged with invisible files

MIUI (even in the latest Android 13/14) operating system, it uses hidden storage mechanisms to keep its data hidden.

• 📁 App cache — temporary files that must be deleted automatically, but often stay in the system for years, especially messengers (Telegram, WhatsApp) and social networks.
• 🔄 Remnants of remote applications – after uninstallation, programs often leave their folders in the /data/data/ and /sdcard/Android/.
• 📊 Logs and dumps are debugging files (.log,.dump) that are created when crashes or updates.
• 🔒 Hidden folders MIUI — For example,.miui,.thumbnails (image miniatures),.data with backups.
• 🤖 System Updates – Firmware files (*.zip) remain in the folder /cache even after successful installation.

Interesting fact: on Xiaomi Redmi Note 10 After a year of use, hidden files are on average 8-12 GB, and on flagships (Xiaomi) 13 Ultra - before 15-20 GB due to increased use of cache by the camera and AI-And the standard "Memory Analysis" in the settings shows only 1-2 GB "garbage".

⚠️ Note: Do not attempt to manually delete files from the folder /system or /vendor — This can lead to complete inoperability of the smartphone and require flashing through Fastboot.

Method 1: Deep cleaning through built-in MIUI tools

Start with the standard system tools — they are secure and do not require root rights. MIUI 12/13/14 has hidden cleaning features that are not visible on the first screen.

Open Settings → Memory → Clean Memory and follow the following steps:

1. Press "Deep Clean" (bottom of the screen).
2. Select the "Unnecessary Files" tab and mark all items except "Download" (there may be important documents).
3. Go to the Big Files tab and sort by size. Delete old videos, APK-file-back.
4. In the Apps section, click on the three dots in the top right corner and select "Cache size sort." Clear the cache for applications with a volume of >100 MB.

Pay special attention to the item "Residual files" - this store data from remote programs. For example, after uninstalling PUBG Mobile or Genshin Impact, up to 1-2 GB of unnecessary files can remain in /Android/obb/ and /Android/data/ folders.

Open "Deep Clean" in the memory settings

Delete unnecessary files in the "Unnecessary Files" tab

Check the "Big Files" section (>500 MB)

Clear the cache of applications with a volume of >100 MB

Remove residual files from old programs-->

Method 2: Manually remove hidden folders through a conductor

Many hidden files can be manually deleted if you know where to look. Use a root-enabled explorer (like Solid Explorer or FX File Explorer) or a standard MIUI File Manager with hidden files displayed on.

Enable the display of hidden files: File Manager → Three dots → Settings → Show hidden files.

Now go to the following folders and delete their contents (but not the folders themselves!):

⚠️ Attention: Do not delete folders /sdcard/MIUI/ and /sdcard/Android/data/ The whole thing will cause system failures. Only delete folder contents that are related to remote applications.

For convenience, use the search by file: File Manager → Search →.log,.dump, *.tmp

These extensions usually refer to unnecessary system files.

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If the Explorer doesn’t show hidden files even after you turn on the option, try alternative apps like Root Explorer or connect your smartphone to your PC via USB in file transfer mode (MTP).

Method 3: Cleaning through ADB (without root rights)

The Android Debug Bridge (ADB) tool allows you to remove system debris without obtaining root rights.

First, turn on USB debugging: Settings → About Phone → MIUI Version (click 7 times) → Back → Additional settings → Developer Settings → Debugging over USB.

Connect your smartphone to your PC, install ADB Tools and execute commands in the terminal:

adb shell


pm clear com.miui.cleanmaster # Cleaning a standard cleaner




pm clear com.android.providers.media #Reset media cache




rm -rf /sdcard/Android/obb/* # Delete OBB- files (only if games are deleted!)




rm -rf /sdcard/.thumbnails/* # Cleaning up thumbnails

To remove the cache of all applications, use:

adb shell "su -c 'find /data/data -name 'cache' -exec rm -rf {} +'"

Note:

root-right

Method 4: Use of specialized utilities

For automated cleaning, applications that can work with hidden MIUI files are suitable:

• 🧹 SD Maid finds residual files, duplicates and empty folders. CorpseFinder is a feature for finding dead files from remote applications.
• 🔍 Files by Google is a simple tool with a cleanup function and analysis of unnecessary files.
• 🛠️ CCleaner clears cache, history and temporary files. The premium version has duplicate analysis.
• 📦 1Tap Cleaner – specializes in cleaning cache and APK-Can delete the Google Play Services cache, which often inflates to 1-2 GB.

Example of working with SD Maid:

1. Run the analysis in the "CorpseFinder" section.

2. Delete files marked "Orphaned" (orphan files).

3. Go to SystemCleaner and clear the MIUI and Google Services cache.

Important: after cleaning with utilities, restart the smartphone - this will allow the system to correctly update the data on free memory.

SD Maid

Files by Google

CCleaner

1Tap Cleaner

Other/not using-->

Method 5: Resetting cache via Recovery Mode

If standard methods didn't work, try resetting the cache through Recovery Mode.This won't delete your data, but will clear the system cache, which can take up to 1-3GB.

Instructions for Xiaomi:

1. Turn off the smartphone.

2. Press the Power button + Volume up until the Mi logo appears.

3. From the Recovery menu, select the language (if you have an option).

4. Go to "Wipe & Reset" → "Wipe Cache."

5. Confirm the action and wait for the completion.

6.Reboot the device ("Reboot" → "System").

This method is especially effective after MIUI updates, when old firmware files remain in memory. For example, after upgrading from MIUI 12 to MIUI 13, up to 2 GB of unnecessary data can remain in the cache.

⚠️ Warning: Do not confuse "Wipe Cache" with "Wipe Data" - the second action will result in a complete reset and deletion of all data!

Method 6: Advanced root-rights cleaning

If you're ready to get root rights, there's more cleaning options available. Use Magisk to get superuser rights, and then install:

• 🔧 Root Explorer – to access system folders /data and /system.
• 🧼 SD Maid (with root) – for deep cleaning of databases and cache.
• 🗑️ DiskUsage – Visualizes which files occupy the most space.

With root rights, you can delete:

- Google Play Services cache (/data/data/com.google.android.gms/)

- System logs (/data/log/)

- Update residues (/cache/ota/)

Unnecessary system applications (bloatware) via Titanium Backup

Example of a command to clear the cache of all user applications:

su


find /data/data -name 'cache' -type d -exec rm -rf {} \;




find /data/data -name 'log' -type f -exec rm -f {} \;

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Root rights give full control of the system, but deprive of guarantees and can disrupt the work of the system. OTA-Use them only if other methods have not helped.

Method 7: Memory re-marking (for power users)

In rare cases, the problem is not the garbage, but the wrong memory markup, which is true for smartphones with eMMC drives (for example, Redmi 9A, Poco M3), where over time, “broken” sectors appear.

For diagnosis, use ADB:

adb shell


df -h

If there is a 100% use section in the output (e.g. /cache), this indicates a problem.

Decision:

1. Make a backup copy of the data.

2. perform the reset via Fastboot:

fastboot erase cache


fastboot format:ext4 userdata

3. Flash your smartphone through the Mi Flash Tool with the "Clean All" option.

⚠️ Note: Memory markup deletes all data without recovery. Use this method only if other methods have not helped, and free memory is critically small (less than 500 MB).

FAQ: Frequent questions about Xiaomi memory cleanup