How to Free Memory on Xiaomi Android Smartphone: A Complete Guide

Xiaomi smartphones (including the Redmi and POCO lines) often face a lack of internal memory, even if you don’t install hundreds of apps, due to the aggressive MIUI caching policy, duplicate files from system services and hidden debris that accumulates after updates. Unlike “naked” Android, Xiaomi firmware actively reserves space for your needs, which can lead to messages like “Insufficient memory” even with 5-10 GB of free space.

This article will help you not just delete unnecessary files, but systemically optimize storage without the risk of losing important data. We will analyze both standard methods (cleaning cache, removing duplicates) and hidden MIUI functions that are not written in the official instructions. We will focus on the problems specific to Xiaomi devices: for example, why memory “disappears” after updating the firmware or how to deal with automatically downloaded themes. All methods are tested on current versions of MIUI 12-14 and work on models from Redmi Note 10 to Xiaomi 13 Ultra.

1.Diagnosis: Why memory ends so quickly

Before you clean a smartphone, you need to figure out what exactly takes up space. MIUI has a built-in storage analyzer, but it often hides system files. Here's how to get the full picture:

1. Open Settings → About Phone → Memory (or Settings → Memory in newer versions) Here you will see the distribution of memory into categories: applications, multimedia, system files, etc.
2. Click on System Data – here often hides up to 5-15 GB of garbage from updates, logs and temporary MIUI files.
3. Use third-party analyzers like Files by Google or SD Maid (requires root for deep scanning) to show files that aren't displayed in the standard manager.

Typical memory eaters on Xiaomi:

• 📁 App cache (especially Google Play Services, MIUI Gallery, Facebook - can take up to 3-8 GB.
• 🎵 Automatically downloaded themes and wallpaper from MIUI Themes (daddy) /MIUI/theme/).
• 📱 Duplicate photos after firmware updates (the system creates backup copies of media files).
• 🔄 Residual files from remote applications (folders) /Android/obb/ and /Android/data/).
• 📦 Logs and dumps (/data/log/, /cache/) — before 1-2 GB after system failures.

Important: On Xiaomi with dynamic memory (e.g. Redmi Note 11 Pro+ 5G), some of the internal storage is reserved for virtual RAM. This is normal, but can be displayed as "occupied" space in the analyzer.

2. Clear cache and temporary files without data loss

The safest way to free up 1-5GB is to remove the app cache and system temporary files. Unlike a full reset, it won't affect your data, but it can speed up your smartphone.

Method 1: Clearing the cache of all applications

1. Go to Settings → Applications → Application Management.
2. Slip on the three dots in the upper right corner and select "Sort by size."
3. Open each major app (e.g. YouTube, Telegram, MIUI Gallery) and click Clear Cache.

Method 2: Removal of system debris through "Optimization"

MIUI has a built-in cleaning tool:

1. Open the Security app (shield icon).
2. Go to the "Optimization" tab → "Deep cleaning".
3. Click Scan and wait until it's done, and the system will find residual files, cache, and unnecessary APKs.
4. Make sure there is no important data in the list and click "Clear".

Residual files of remote applications

Cash Google Play Services

Temporary file of the theme loader

System Logs (files with.log extension)

Mini-dumps (folder /data/anr/)-->

⚠️ Warning: Do not clear the cache of Google Play Apps Market and Google Play Services too often - this can lead to app update errors: 1 time 2-3 month.

Method 3: Manual cleaning of /cache/ folder (for advanced)

If you have root access or use ADB, you can delete the system cache completely:

adb shell


su




rm -rf /cache/*




rm -rf /data/log/*

This command will delete all temporary files, including memory dumps and error logs. Don't use it unnecessarily - after cleaning, the smartphone can restart.

3. Removal of duplicates and unnecessary media files

Photos and videos take up the lion’s share of memory on any smartphone, and on Xiaomi, the problem is compounded by the system automatically creating thumbnails, backups and duplicates when editing photos in a standard gallery.

How to find and remove duplicates

• 🔍 Use the built-in tool: Open the Gallery → "Albums" → "The app will automatically find the duplicate photos and prompt them to delete them.
• 📊 For deep scanning, install Files by Google or CCleaner, which will find duplicates even in hidden folders (e.g.,.thumbnails).
• 🗑️ Check the folder. DCIM/.thumbnails — It stores thumbnails of all photos that can be safely removed (they are automatically regenerated).

Optimization of photo and video storage

If you’re actively shooting 4K video or taking a lot of photos, turn on compression:

1. Open the Gallery → “Settings” → “Storage optimization”.
2. Activate the option “Compress photos” – this will reduce the size of the images without noticeable loss of quality.
3. For video, enable "Adaptive Quality" in the camera settings (Section "Video Resolution").

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If you often shoot videos, move the folder. DCIM on SD-For this, use the FolderMount app (requires root) or manually change the save path in the camera settings.

⚠️ Note: When removing duplicates through third-party apps, always check files manually! some programs are mistakenly labeled as duplicate photos with different resolutions (for example, the original and the edited version).

4. Clean up system files and MIUI updates

One of the most frustrating features of MIUI is its tendency to accumulate debris after updates, with each new firmware version leaving behind 500MB-2GB “residual files” that don’t get deleted automatically, and it downloads update packs in the background even if you’ve disabled auto-update.

How to delete unnecessary update files

1. Go to Settings → About the phone → System update.
2. Slip on the three dots in the top right corner and select "Delete downloaded package" to remove downloaded but uninstalled updates.
3. Through the file manager (MI File Manager or Total Commander – Go to the folder /data/ota_package/ Delete all files with the.zip extension.

Cleaning Update Cache and Temporary MIUI Files

This will require access to hidden folders:

1. Enable the display of hidden files in the file manager settings.
2. Move to the /data/miui/ and delete the folders: update_log/ — logs of updates; download/ — downloaded themes and updates; cache/ — time-file.

Reboot your smartphone.

⚠️ Note: Do not delete files from the folder /system/ — If you're not sure what the file is, it's best not to touch it.

5. Application optimization: what can be removed without harm

Many pre-installed MIUI applications cannot be removed by standard means, but they can be disabled or frozen to keep them from taking up memory and wasting resources.

• 🎵 Mi Music is a standard player that duplicates the functions of Google Play Music or Spotify.
• 📰 Mi Browser – a browser with ads that can be replaced with Chrome or Firefox.
• 🎨 MIUI Themes – if you don’t use custom themes, this service is constantly downloading updates in the background.
• 📡 Mi Remote – an application for IR port control (useless if you do not have an IR transmitter).
• 💬 Mi Community – Xiaomi forum that sends notifications and takes place cachem.

How to Disable Unnecessary Applications

1. Go to Settings → Applications → Application Management.
2. Select an unneeded app (such as Mi Browser).
3. Click "Disable" (if the button is inactive, first click "Delete Updates").
4. Confirm the action. The app will disappear from the menu and stop updating.

⚠️ Warning: Do not disable or delete the following services, even if they seem unnecessary:

• com.android.phone – responsible for mobile communications;
• com.miui.securitycenter – MIUI security center
• com.google.android.gms – Google Play Services (will cause errors in other applications).

Transfer of data to SD-map

If your internal memory is full and you don't want to delete anything, you can transfer some of your data to an external drive or to the cloud. There are several ways to do this on Xiaomi without losing functionality.

Method 1: Transfer applications to SD-map

Not all apps support portability, but for those that do, it will free up up to 1-3GB:

1. Put it in. SD-map (preferably class) UHS-I or A1 speed).
2. Go to Settings → Applications → Application Management.
3. Select an app (like Spotify or Netflix) and click Storage.
4. If the "Change" option is available, select SD-map.

Method 2: Automatic backup in Mi Cloud

Xiaomi offers 5GB of free cloud storage to enable automatic backup:

1. Go to Settings → Xiaomi Account → Mi Cloud.
2. Activate "Synchronization Gallery" and "Backup".
3. Choose which data to save (contacts, notes, photos).
4. Click "Start backup."

⚠️ Note: When transferring applications to SD-The card may be slower and some features (such as widgets) will become unavailable. Also, do not remove the memory card without first "Safe Retrieval" in the storage settings!

7.Reset to factory settings: when it really needs to

If all previous methods have failed and free memory is critically scarce (less than 1GB), it is worth considering a complete reset.This is a radical method, but it is guaranteed to clean up all unnecessary files, including hidden MIUI debris.

How to properly reset

Create a backup of contacts (export to VCF)

Save photos on PC or cloud

Write down usernames/passwords from accounts (Mi Account, Google)

Check what you know. PIN-Xiaomi account code (required after reset)

Untie the device from Google Account (Settings) → Accounts. → Google → Delete the account)-->

1. Go to Settings → About the phone → Reset settings.
2. Select "Erase all data."
3. Enter. PIN-code.
4. Confirm action. The phone will restart and start the cleaning process (it will take 5-15 minutes).

What to do after a reset

• 🔄 Do not restore data from backup MIUI — It may contain the same garbage. Better selectively copy the files you want from your PC.
• 🚫 Don't install all the apps at once. Start with the essentials and keep an eye out for the free space.
• ⚙️ Turn off automatic app updates in Google Play (Settings) → Auto-update → "Not update automatically").

Critical: On Xiaomi models with a locked bootloader (most modern devices), a reset via Recovery (Volume Up + Power buttons) can result in a device locking due to Mi Account.Always use a reset via settings!

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Factory resets are a last resort, and if memory runs out again quickly, the problem may be physical degradation of the drive (especially on Redmi’s budget eMMC models).

Frequently asked questions