Why Xiaomi is clogged memory: hidden reasons and ways to clean

You notice that your Xiaomi is suddenly slowing down, and the space on your internal drive is melting away — even though you haven't downloaded anything? — This is a typical problem of the brand's smartphone owners, and it's rarely related to the actual amount of your data, because it's about system cache, background debris and features of MIUI firmware that are actively consuming memory even without you.

In this article, we will not just list the standard tips like “clean the cache”, but will analyze the hidden mechanisms. MIUI, This is a way to get your memory clogged even on new 256GB devices, learn about what processes are at fault 80% of the time, find and delete unnecessary files without harming the system, and what settings will help prevent re-clogging, POCO X5 Xiaomi 13 – their firmware most aggressively reserve memory for their needs.

1. App cache: why it takes gigabytes and can it be removed

The main memory eater on Xiaomi is the app cache, which MIUI does not automatically clean. Unlike iOS or pure Android, the cache is not limited to strict limits and can grow to 10-15 GB on a actively used smartphone, and not only social networks or messengers, but also system services like miui.analytics or com.xiaomi.market are to blame.

The biggest mistake users make is manually clearing the cache through Settings → Applications. This gives a temporary effect, but after 2-3 days the memory is clogged again. The fact is that MIUI restores the cache to “optimize work”, and some applications (for example, Google Play Services) can create up to 1-2 GB of cache per week.

• 📱 Social media: Facebook, Instagram and TikTok store thumbnails of videos, stories and banner ads. 3-5 GB per month.
• 🎮 Even after deleting a game, its cache often remains in the folder /Android/obb (For example, Genshin Impact leaves it there. 10+ GB).
• 🔍 System services: com.miui.systemAdSolution and com.xiaomi.mipicks cache data even if you don’t use it.

⚠️ Warning: Do not clear the cache for com.android.phone and com.android.providers.media applications.This can cause calls and gallery to crash.

How to clean the cache correctly:

1. Use the built-in Cleanup tool (Broom icon in Settings → Memory) that removes the cache selectively without affecting critical data.
2. For deep cleaning, install SD Maid (root rights required) or Files by Google – they find the cache that MIUI hides.
3. Turn off auto-update apps in Google Play → Settings and clear Play Market cache once a week.

MIUI Garbage Files: Where They Hide and How to Delete Them

Firmware MIUI It creates hidden folders of garbage that you can't see through a standard conductor. /MIUI/debug_log weigh 500 MB–1 GB and contain the error logs of the last six months. /MIUI/sss Stores temporary files for updates – even if you haven’t updated your smartphone in a while.

Another source of garbage is duplicate media files. MIUI automatically creates thumbnails for photos and videos in the /DCIM/.thumbnails folder, which can take up to 2-3 GB. The originals are often duplicated in /Pictures/Screenshots and /Download without your knowledge.

To find hidden files without root rights:

1. Install FX File Explorer or Solid Explorer.
2. In the Explorer settings, enable the display of hidden files (Settings → Show hidden files).
3. Go to the root directory (/) and manually check the MIUI, Android, and DCIM folders.

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If the memory is not free after deleting the garbage files, restart the smartphone. MIUI updates the free space data only after the reboot.

3 Automatic Updates and Backups: How They Steal Memory

MIUI aggressively reserves space for system updates and backups, even if you have disabled these features. For example, before updating the firmware, the smartphone downloads the full package (2-4 GB) to the /cache folder, and after installation, it does not always delete it. If the update is interrupted, these files remain dead weight.

Even worse, backups. Local Backup in Settings → About Phone → The default backup creates copies every month.

• 📁 Each copy weighs 1-3 GB (depending on the number of applications).
• 🔄 MIUI Keeps up to the last 5 copies without asking permission to remove the old ones.
• 📍 Copy files are hiding in /MIUI/backup/AllBackup and are not displayed in a standard conductor.

How to disable unnecessary backups:

1. Go to Settings → About Phone → Backup.
2. Turn off automatic reservations.
3. Remove old copies manually via FX File Explorer (path: /MIUI/backup/AllBackup).
4. For complete cleaning, delete the /MIUI/backup folder in its entirety (it will be restored at the next reservation).

⚠️ Note: If you are using Xiaomi Cloud, check your sync settings in Settings → Xiaomi account → Mi Cloud. By default, all photos and videos in original quality are uploaded there, which can eat up to 5-10 GB per month.

4.Pre-installed Apps: Why They Cannot Be Deleted and What to Do

Xiaomi smartphones are packed with pre-installed apps that cannot be removed by standard means. For example, the Redmi Note 12 Pro+ has 20+ system applications out of the box, of which only 5-6 are really needed. The rest take up space and work in the background, consuming memory:

• 🎵 Mi Music and Mi Video: Cache album covers and video previews, even if you don't use them.
• 🛒 GetApps and Mi Pay: Updated via Google Play and store cache of banner ads.
• 📊 Security and Cleaner: scan the system in the background and create logs in the background /MIUI/debug_log.
• 🎮 Game Turbo and Joyose: Installing additional services for games that weigh 300-500 MB.

How to get rid of unnecessary applications:

1. Disconnection (without root rights):
2. Removal via ADB (PC required):
3. Use of patches (for advanced): Install Universal Android Debloater (requires an unlocked bootloader).

Disable Auto Update for GetApps and Mi Pay|Cleaning Security and Cleaner cache|Remove Joyose through ADB|Turn off Game Turbo in the settings-->

If you don’t want to mess with ADB, just freeze unwanted apps through App Freezer (from Google Play).This will stop their background activity and prevent cache creation.

5.Background debris: processes you can't see but they eat memory

MIUI runs dozens of background processes that users don’t even know about. For example, com.xiaomi.xmsf (Xiaomi Mobile Services Framework) constantly syncs data with Xiaomi servers, creating temporary files in /data/data/com.xiaomi.xmsf/cache. com.miui.analytics collects usage statistics and can take up to 1 GB of logs.

Another hidden eater is preloading content. MIUI defaults to download it in advance:

• 📰 News in Mi Browser (cache stored in the /Android/data/com.android.browser).
• 🎵 Music Recommendations in Mi Music (Daddy) /MIUI/music/preview).
• 📹 Video preview in Mi Video (can weigh up to 500MB).

How to turn off background activity:

1. Go to Settings → Permissions → Autostart and turn off autostart for unnecessary applications.
2. Settings → Battery → Power saving mode, select High – this will limit background activity.
3. Install Greenify (root required) to force the background processes to freeze.

File system errors: when memory "disappears" for no reason

Sometimes Xiaomi memory is clogged due to file system errors that MIUI can't fix automatically.

• 🔄 Fragmentation: After multiple write/delete files, the read speed drops and the system miscalculates the free space.
• 🗃️ Lost clusters: Files deleted but no space vacated (typical for file system) F2FS, which is used by Xiaomi).
• 🔗 Symbolic references: MIUI creates links to files that have already been deleted, which is why the conductor shows the wrong amount of memory.

How to check and correct errors:

1. Connect your smartphone to your PC and start chkdsk (for Windows):
2. Use SD Maid (CorseFinder) to search for dead files.
3. Make a cache reset via recovery:

⚠️ Note: If the memory is not released after the cache is reset, check the smartphone for viruses using Malwarebytes. Some Trojans (for example, Android.Triada) disguise themselves as system processes and create hidden files in the computer. /system.

7.How to prevent future memory clogging

To prevent memory from getting clogged again on Xiaomi, set up the firmware on this checklist:

Disable automatic reservations in MIUI|Set cache restriction for Google Play Services (in Titanium Backup)|Ban background activity for unnecessary applications|Disable content preloading in Mi Browser|Set up cleaning of the cache on schedule (in Security) → Cleaner)-->

Additional measures:

• 📁 Use MicroSD (if supported) to move applications through Settings → Annexes → Move it to SD.
• 🔄 Check the folder regularly /Download — MIUI Download updates and temporary files.
• 🚫 Turn off Mi Cloud sync for unnecessary data (photos, notes, calls).

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The most effective measure is to turn off analytics collection and limit background processes, which reduces memory clogging by 40-60% without loss of functionality.

FAQ: Frequent questions about memory on Xiaomi