Xiaomi’s “Not Enough Memory”: How to Free Up Space When You Have Nothing to Delete

You see the words “Not enough memory” on the Xiaomi screen, but the gallery is empty, apps take up crumbs and cache has been cleaned a dozen times? This problem is familiar to many owners of smartphones of the brand — from budget Redmi to flagship Mi or POCO. The fact that the MIUI system (even in the latest versions) has features of storage management that are not always obvious to the user.

In this article, we're not going to tell you to "delete unnecessary files" -- you've done it anyway. Instead, we're going to look at 12 hidden reasons why memory ends on its own, and what to do about it. From system logs to /data partition markup errors, we're going to cover everything that's not on the surface, and we're going to figure out why, after MIUI 14/15 update, the problem can get worse, and how to fix it without resetting to factory settings.

Why Xiaomi is showing “not enough memory” when there are no files

The first thing to understand: free space on Android ≠ The operating system reserves some of the memory for its needs, and MIUI And then there's a few more "chips" to it:

• 📁 System logs and dumps: MIUI actively writing debugging information in /data/log, Especially if there are problems with the modules (for example, NFC or IR-These files can take up to 3–5 GB and not displayed in standard storage.
• 🔄 Residual update files: After installation OTA-Over-the-air packages in the folder /cache There are temporary files that the system forgets to delete. 64 GB of memory can eat up to 1–2 GB.
• 🤖 System application cache: Apps like Mi Video, Mi Music or GetApps cache data more aggressively than third-party programs. → Warehouse.
• 🗃️ Fragmentation of the section /data: Over time, the file system f2fs (Xiaomi’s use degrades, and free memory blocks become “unsuitable” for writing new data.

Another common cause is partition mounting error, for example, if you plug your phone into your PC in MTP mode and interrupt file transfer, the system may lose some of the memory, showing it as busy, which is not critical to work, but it interferes with the installation of applications.

⚠️ Warning: If after cleaning the cache and deleting files, the free space instantly returns to its previous value (for example, it was 1 GB, became 3 GB, and after an hour again 1 GB) – the background process of the mediaserver is to blame. Solution – Reboot or forced shutdown of the process through ADB.

How to Check Real Memory Use on Xiaomi

The standard Settings section → MIUI Storage doesn't show everything. To see the full picture, use these methods:

1. Built-in MIUI Analyzer: Go to Settings → About Phone → Memory (some models may have different paths) and display system data that is not visible in the main storage. Pay attention to Others and System Cache – if it takes more than 5-7 GB, it’s time to clean.
2. Files by Google: Google’s utility shows hidden files, including app cache and residual data. Go to Clean Up → Unused Files – it often contains dead data from long-deleted programs.

12 Ways to Free Memory on Xiaomi If You Have Nothing to Delete

Now, let's get to the practice. Below are the step-by-step instructions, from the simplest to the most advanced, start at the first point and go down if the problem is not solved.

1. Cleaning the cache of system applications

Many MIUI applications (e.g. Mi Video, Mi Music, GetApps) accumulate cache that is not cleared through the standard menu.

1. Go to Settings → Applications → Application Management.
2. Sort the list by size (click on the three dots in the upper right corner).
3. Select a system application (such as Downloads or Gallery) → Storage → Clear cache.
4. For a complete cleanup, click Clear Data (Warning: This will reset the app settings!).

Removal of system logs and dumps

MIUI writes debugging information to /data/log, which can take gigabytes to clean up:

• Use Files by Google: Go to Cleanup → Log Files.
• Or through ADB (PC required):

adb shell


su




rm -rf /data/log/*




rm -rf /data/tombstones/*




rm -rf /data/anr/*




exit




exit

Note: You need root rights or unlocked bootloaders to execute commands. On some models (Redmi Note 10 Pro, POCO X3 Pro), this can result in a Widevine L1 reset (loss of Netflix HD support).

3. Cleaning the /cache folder

Temporary update files and a recovery cache are stored in /cache, which can be cleaned in two ways:

• Through Recovery Mode: Turn off your phone. Press Power + Volume up to log in to Recovery. Select Wipe & Reset → Wipe Cache.

ADB

adb shell


su




rm -rf /cache/*




exit

4. Removal of duplicates in the gallery

The Gallery app in MIUI often creates hidden duplicates of photos (e.g. editing or optimizing) to find them:

• Install Gallery Doctor (available in GetApps)
• Run scans for duplicates and junk files (e.g. sketches of.thumb).
• Remove unnecessary copies manually.

8. Defragmentation of the file system

Over time, the f2fs file system (used by Xiaomi) becomes fragmented, and the free blocks become "invisible" to the system.

• Install SD Maid (root required).
• Run SystemCleaner → FileSearch and find fragmented files.
• Or do it through ADB: