Where did the memory on the Android Xiaomi phone go and how to get it back?

You open a gallery to take a photo, but you see a notification saying, "Not enough memory." Or you try to install an update, and the system says that Xiaomi is running out of space — although everything worked yesterday. Familiar situation? Memory on Redmi, POCO and Mi smartphones tends to "disappear" for no apparent reason. The culprits are not only your photos and videos, but also hidden processes that actively consume gigabytes.

In this article, we will discuss the 7 main reasons why memory on Xiaomi melts like snow in the spring, and show you how to find and delete unnecessary files. You will learn which applications secretly cache data, how to clean up system debris and what to do if even after deleting files memory is not freed, and also exclusive life hacks for owners of smartphones with MIUI 12/13/14, which you will not find in standard instructions.

Let me warn you right away, if you've never cleaned your cache or checked your Download folder, you can free up 3 to 15 GB after reading this article, without deleting important data. Let's start with the most obvious, but often ignored, one.

1. App cache: why it takes gigabytes and how to clean it

Cache is temporary files that apps save to make things faster, like YouTube caches videos to load faster when you re-watch them, and Instagram has thumbnails of photos. The problem is that over time, the cache grows to incredible sizes. On Xiaomi with MIUI, it can take up up to 20% of total memory if it's not cleaned for years.

How to check cache size? Go to Settings → Apps → Application Management, select any app (like TikTok or VKontakte) and look at the line “Cash.” You will be surprised to see that Telegram can have 1-2 GB of cache, and Google Play Market can have up to 500 MB.

How to clean the cache correctly?

• 🔍 Selectively: Go to each application through Settings → Apps and click "Clear Cache." It's safe -- the app will just re-download the data.
• 🧹 Mass: Use the built-in Cleanup utility (icon with broomstick). Select "Deep Cleaning" → "But beware: a mass cleanup may slow down some applications before re-caching.
• ⚙️ Autoclean: Include in Settings → Memory. → Automatic cleaning so that the system itself removes the cache when space is scarce.

⚠️ Warning: Don't confuse "Clear Cache" and "Clean Data"! The second action will delete all the app's settings (such as WhatsApp logins or game progress), the cache can be cleaned every day, and the data is only if you are ready to reconfigure the app.

2. Hidden files and folders: where Xiaomi hides your gigabytes

Even if you delete all photos and videos, memory can remain busy, because of hidden system folders that do not appear in the standard file manager.

• 📁.thumbnails – photo and video miniatures (can weigh up to 1 GB).
• 📁 Android/data — application data (here are stored downloads from games, temporary files of messengers).
• 📁 MIUI/Backup — backups of the system (sometimes taken up by the 5 GB).
• 📁 Download – here files from the browser, messengers and email are automatically saved.

How to find and delete hidden files?

1. Install a file manager with support for hidden folders, such as Solid Explorer or FX File Explorer.
2. Enable the display of hidden files in the manager settings (usually the option is called "Show hidden files").
3. Go to the root memory folder (/storage/emulated/0/) and manually check the folders from the list above.

⚠️ Attention: Do not delete folders Android/obb and Android/data completely, this will cause the installed games and applications to crash, only delete files that are obviously unnecessary (for example, old game updates or messenger cache).

Check the Download folder for old files

Clean.thumbnails (miniatures)

Remove backups to MIUI/Backup older than 3 months

Clear the cache in Android/data for-use-->

3. Invisible Apps: Who Is Secretly Eating Your Memory

Some apps continue to work in the background even if you don't use them.

• 🤖 Xiaomi Pre-installed Services: Mi Video, Mi Music, GetApps – they are updated and cache data automatically.

How to find and disable “gluttonous” applications?

1. Go to Settings → Applications → Application Management → Memory Use.
2. Sort the list by size. Apps that are over 500MB in size are worth checking out.
3. Click on the application → “Limit background activity” (if the option is available).
4. For system applications (e.g. MiuiDaemon), use the command: adb shell pm disable-user --user 0 com.xiaomi.midrop (replace com.xiaomi.midrop with the desired application package).

💡 Useful tip: If you can’t uninstall a pre-installed app (like Mi Browser), turn off its updates in Google Play Market. → press three points → "Turn off auto-update".

4. System updates and duplicate files

Xiaomi regularly releases MIUI updates that weigh 1-3 GB. The problem is that after installing the update, old firmware files often remain in memory under the name update.zip or in the /cache folder. In addition, when updated via OTA (over the air), the system creates backups that are not deleted automatically.

How do I free up space after updates?

• 🔄 Remove old firmware: go to Settings → The phone. → Updating the system → Three points. → Remove the downloaded package.
• 🗑️ Clear the folder. /cache: You need to get root access or use it. ADB: adb shell su -c "rm -rf /cache/*" (Superuser rights are required).
• 📦 Check for duplicates: Use apps like Files by Google or Duplicate Files Fixer to find repetitive photos/videos.

⚠️ Note: If after the update MIUI The phone is slowing down, don't rush to reset. Try to clear the partition cache first. /cache via Recovery Mode:

1. Turn off the phone.
2. Press the Power button + Volume up until the Mi logo appears.
3. Select Wipe Cache Partition (control – volume buttons, choice – power button).

5. Multimedia: why photos and videos take up 2-3 times more space

The camera on Xiaomi saves photos in high resolution (up to 12-20 MP), and video in 4K or Full HD.

• 📸 Photo format HEIF (Newer models take up less space, but not all apps support them. JPEG camera-setting.
• 🎥 Video frequency 60 FPS Weighs almost 2 times more than 30 FPS. If you are not shooting for professional editing, reduce the frame rate.
• 🔄 Backups in Google Photos duplicate your files, see if you're storing the same photos on your phone and in the cloud.

How to reduce the weight of multimedia without losing quality?

💡 Useful tip: Enable the Automatic Deletion feature in Google Photos (settings) → "Free up space.The app will remove photos from your phone that have already been uploaded to the cloud (but only if you have enough space in Google Drive).

6 Viruses and Malware: When Memory Eats Malware

If the memory on Xiaomi disappears by itself, and you haven't installed new apps, it's probably a virus on your phone.

• 🕵️ Clickers – imitate clicks on advertising in the background, downloading unnecessary files.
• 📦 Trojans – masquerading as system processes (e.g. com.android.system) and stealing data by taking up memory with log files.
• 🔄 Miners – use the resources of the phone to mine cryptocurrency, creating temporary files.

How to check your phone for viruses?

1. Install antivirus (Malwarebytes, Dr.Web, Kaspersky) and perform a full scan.
2. Check the list of installed applications for suspicious ones (for example, with names like System Update, Flash Player).
3. Go to Settings → Battery → Battery Use and see if there are unknown processes consuming charge.

⚠️ Warning: If the antivirus finds a threat in a system application (e.g. com.xiaomi.market), do not remove it - it may disrupt the work MIUI. Instead:

1. Make a backup copy of the data.
2. Perform reset to factory settings (Settings → Additional → Resetting).
3. After reset, do not restore data from the backup – it may contain a virus.

File system errors: when memory is "reserved" for no reason

Sometimes memory on Xiaomi is busy, but no application or file takes up as much space.

• 🔧 Damage to the file system (for example, after incorrect extraction) SD-map).
• 📊 Errors in data MIUI (The system miscalculates the vacant space).
• 🔄 Unfinished operations (for example, interrupted download of a large file).

How to fix file system errors?

1. Reboot your phone – sometimes it helps to “reset” memory errors.
2. Check it out. SD-card: adb shell sm list-volumes If the card is defined as corrupted, format it (data will be lost!).
3. Reset the cache of the section (see the instructions in section 4).
4. Update MIUI to the latest version – new firmware often fixes bugs with memory in mind.

💡 If the memory still disappears after all the manipulations, try using an alternative launcher (for example, Nova Launcher). MIUI.

💡

If the memory is not released after cleaning the cache and deleting the files, the problem may be a hardware failure (for example, a malfunction of flash memory), in which case only the service center will help.

FAQ: Frequent questions about memory on Xiaomi