How to completely clean up system memory on Xiaomi Redmi: from cache to garbage MIUI

The smartphone slows down, apps fly out, and the system writes "Not enough memory"? On Xiaomi Redmi, this problem occurs more often than on other Android devices - this is due to aggressive optimization of MIUI and a tendency to accumulate system debris. Even if you regularly delete photos and videos, internal storage can be clogged with invisible files: app cache, system logs, update residues and duplicates of MIUI.

In this article, we have 7 proven ways to clean up memory, including hidden firmware features and tools for power users: we will discuss how to safely delete unnecessary data without risking damage to the system, which files can be touched and which are better left, and we will focus on the typical errors that cause memory to be eaten away again in a week.

⚠️ Important: Not all methods are suitable for models with MIUI 14+ — In newer versions, you've changed access to some of your system folders. 13/14, Check the compatibility of the method before use.

1. Standard cleaning through "Safety" (for beginners)

The easiest way is to use the built-in MIUI tool, which removes application cache, temporary files and debris from the system, but does not affect deep system data.

How to start:

1. Open the Security app (the shield icon).
2. Go to Cleanup (or Accelerate in older versions).
3. Click Scan and wait for analysis.
4. Check all items (except Downloads if there are important files) and click Clear.

⚠️ If the memory is less than 1 GB free after cleaning, the problem lies deeper in system logs or duplicates. MIUI. Move to the following methods.

What removes this tool:

• 🗑️ App cache (including Google Play Services) and MIUI System)
• 📁 Temporary files APK (leftovers after application installation)
• 📊 Error Logs (but not kernel system logs!)
• 🖼️ Image sketches (miniatures from the gallery)

2. Manual cleaning of app cache (for advanced)

Some apps (especially Facebook, TikTok and others) MIUI-services) can accumulate cache sizes up to 5-10 GB. Standard cleaning through "Safety" does not always cope with them. Manual method is more effective, but requires caution.

Instructions:

1. Go to Settings → Applications → Application Management.
2. Sort the list by size (click on the three dots in the top right corner → Sort → by size).
3. Select an app with a large cache (like Google or Mi Video).
4. Press Warehouse. → Clear the cache.

🔍 Which apps to clean first:

• 📱 Google Play Services (can take up to 2GB)
• 🎵 Mi Music or Spotify (album cover cache)
• 📺 Mi Video (miniatures and video buffer)
• 🗺️ Google Maps (offline maps and route cache)

⚠️ Note: Do not clear the cache for settings, MIUI System or Android System – this can cause interface failures. Also avoid clearing the cache of banking applications (such as SberBank Online), as they may require re-authorization.

3. Delete system logs and dumps (hidden files)

Xiaomi Redmi actively writes system logs, especially if you use features like Game Turbo or Second Space. These files can take up to 3-5 GB, but do not appear in the standard file manager.

How to find and remove them:

1. Connect your phone to your PC and enable USB Debugging (Settings → About Phone → MIUI Version → 7 times press the version → go back to Additional Settings → For Developers).
2. Use an ADB (Android Debug Bridge) or a root file manager (such as Root Explorer).
3. Go to the folders: /data/log/ /data/anr/ /data/tombstones/ /sdcard/MIUI/debug_log/
4. Delete all files with extensions.log,.txt,.dmp.

📌 PC-free alternative: Use Files by Google (available on Play Market) which shows hidden system files and suggests clearing them.

⚠️ Note: Removing files from /data/ If you're not sure, use Files by Google or consult the method. №4.

4. Cleanup of MIUI duplicates (a unique issue of Xiaomi)

MIUI creates duplicate media files in hidden folders even if you have already deleted them, for example, photos from Gallery can stay in /MIUI/Gallery/cloud/ or /Pictures/.thumbnails/. This applies to both screenshots and screen recordings.

How to find and remove duplicates:

1. Open any file manager (e.g., Mi File Manager or Solid Explorer).
2. Enable the hidden file displays (in the manager settings).
3. Go to /sdcard/MIUI/ /sdcard/Pictures/.thumbnails/ /sdcard/DCIM/.thumbnails/ /sdcard/Download/.com.xiaomi.midrop/
4. Delete all files older than 30 days (or all if you don’t have to lose thumbnails).

🔍 Where else to look:

• 📸 /sdcard/MIUI/Gallery/cloud/ — cloud-copy
• 🎥 /sdcard/Movies/.thumbnails/ — preview
• 📄 /sdcard/Download/.tmp/ — download-file
• 🔄 /sdcard/MIUI/Backup/ — backups

💡 Tip: To prevent duplicates from appearing again, disable automatic reservation in Settings → Xiaomi accounts → Mi Cloud. → Synchronization settings.

💡

Before mass deletion of duplicates, back up important files to your PC or cloud, sometimes storing screenshots of important information (such as confirmation codes) in those folders.

5. reset partition cache (without data loss)

If previous methods didn’t work, try resetting /cache.This doesn’t affect user data, but clears temporary system files that can take up to 1-2 GB.

Instructions:

1. Turn off the phone.
2. Press the Power button + Volume up until the Mi logo appears.
3. In the Recovery menu, select the language (English/whale).
4. Go to Wipe & Reset → Wipe Cache.
5. Confirm the action and wait for the completion.
6. Restart the phone (Reboot).

⚠️ Warning: Don't confuse Wipe Cache with Wipe Data (full reset)! The second option will delete all your files and settings.

📌 What does this method do:

• ✅ Clears the cache of system updates (if they freeze when downloading).
• ✅ Deletes temporary files MIUI, which are not visible to the user.
• ✅ Can solve the problem with the gray screen after the update.

💡

Partition cache reset is the only safe way to clean up system temporary files without root rights. Suitable for all Redmi models, including newer ones (Note 12, 13 series).

6. Memory optimization through the developer (for experienced)

Xiaomi Redmi has hidden settings to limit the background activity of applications and reduce memory load.This does not clean files, but prevents them from accumulating in the future.

How to turn on:

1. Activate Developer Mode (see Step 1 in the Method) №3).
2. Go to Settings → Additional → For developers.
3. Find and enable: Limit background processes → Maximum 2 of the process Do not save activity (remove the cache of closed applications) Disable window animation (speed up work)
4. Reboot the phone.

🔧 Additional tweaks:

• 🔄 Turn off Auto Sync for unnecessary accounts (Settings) → Accounts).
• 📴 Limit background data transfer for social networks (Settings) → Annexes → Permits → Data in the background).
• 🔋 Include Economy mode in Settings → Battery (reduces memory load).

⚠️ Note: If notifications stop coming after these changes (e.g. from WhatsApp or Telegram), return the setting Limit Background Processes to the Standard Limitation.

7.Extreme measures: reset to factory settings

If the memory is full of invisible files, and the phone slows down even after all the manipulations, it leaves a complete reset.

• 📱 Annexes and their data
• 📂 Photos, videos, music (if not saved) SD-map)
• 🔑 Wi-Fi passwords and accounts
• ⚙️ System settings (including fingerprints)

How to reset correctly:

1. Backup: Settings → About Phone → Backup and Reset → Local Backup
2. Go to Settings → About the phone → Reset settings.
3. Choose to erase all data.
4. Enter your password (if installed) and confirm.

🔄 After discharge:

• 🛠️ Don't restore backup through Mi Cloud - it can return garbage.
• 📥 Install only the necessary applications (avoid cluttering").
• 🔒 Turn off automatic photo sync in Google Photos or Mi Cloud.

⚠️ Note: On Redmi Note models 10/11/12 After the reset, you may need to re-assign your Xiaomi account to unlock the bootloader!

FAQ: Frequent questions about cleaning up memory