Where to look for memory on Xiaomi: hidden folders, cloud and extension via microSD

You see a "Memory Full" notification on your Xiaomi all the time, but you don't know where the gigabytes went? Or you want to move apps to a memory card, but the system doesn't? The problem of space shortage is familiar to most smartphone owners of the brand — especially budget models with 32-64 GB of internal memory. But often users do not realize that up to 30% of internal storage is occupied by hidden system files, caches and duplicates that can be safely deleted.

In this article, we will analyze exactly where memory on Xiaomi (including Redmi and the other two) is hidden. POCO), How to free it without risk to the system and what models support microSD expansion to 1 TB. And also – why even after cleaning the memory through the settings, the space is not completely freed up and what to do about it.

1.Inner memory: where to look and what takes place

The first thing you need to do is diagnose the memory allocation. → The phone. → Memory. Here you'll see a diagram of System, Applications, Multimedia, Files and Other, but this is often misleading -- for example, a System section can be as high as 15 to 20 GB, even though the really critical files weigh no more than 8 to 10 GB.

Where to look for hidden memory eaters:

• 📁 folder MIUI — It stores themes, wallpaper, system updates and launcher cache, often weighing 1-3 GB, but some files can be manually deleted.

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To see hidden folders, connect your phone to your PC via USB file transfer (MTP) and enable the display of hidden elements in Windows Explorer (the View tab» → «Hidden elements»).

Pay special attention to the “Other” section – here you can hide:

• 📄 System Logs (.log,.txt files in folder) MIUI/debug_log).
• 🗃️ Cash updates (MIUI/ota — weigh 1–2 GB after downloading firmware).
• 🎮 Save games (folder) Android/data — Some games store gigabytes of data here).

2. How to Free Memory Without Data Loss: 5 Ways to Work

If you see that the memory is 90%+, If you do not want to delete personal files, use these methods:

Method 1: Clearing cache and unnecessary files through MIUI

The safest option is to use built-in tools:

1. Go to Settings → Memory → Cleanup.
2. Click on “Scan” and wait for analysis.
3. Check the boxes "App Cache", "Unused Files" and "Dublicates".
4. Click on “Clean” (usually freed 1-3 GB).

Method 2: Delete heavy files through file manager

Use a standard Explorer (Files by Xiaomi) or a third-party Explorer (such as Solid Explorer):

• 🔍 Sort files by size (click on three dots) → «Sorting» → «By size»).
• 🗑️ Remove the old ones. APK-files (Download folder), backup copies (MIUI/Backup) and unnecessary video.
• 🎵 Check the Music folder – audio files from messengers (for example, voice messages from WhatsApp) can lie here).

Outdated. APK-file|Cash games Android/obb (if the game is deleted)|Duplicate photos in DCIM|Logs of system in MIUI/debug_log|Backup copies are older 6 months-->

Method 3: Transfer applications to memory card (if supported)

Not all Xiaomi models allow you to port applications to microSD. Check support for:

If your model supports the transfer:

1. Insert a memory card (recommended) UHS-I Class 10 for speed).
2. Go to Settings → Applications → Application Management.
3. Select the application → «Warehouse» → «Change» → «Map. SD».

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Moving apps to a memory card can slow them down, especially if the microSD class is lower. UHS-I. System applications cannot be moved.

Method 4: Using Xiaomi Cloud Cloud Storage

Xiaomi Cloud gives 5GB for free (for Mi Account accounts).

1. Open your Settings → Accounts → Mi Cloud
2. Enable synchronization for Gallery, Notes and Contacts.
3. To manually upload files, use the “Mi Cloud” app.

Once downloaded, files can be deleted from the phone, leaving only links to access.

Method 5: Reset the cache partition (for advanced)

If the phone is severely slowing down and memory is clogged with unknown things, try resetting the cache of the cache section (does not delete personal data):

1. Turn off the phone.
2. Press the Power button + Volume up to enter Recovery.
3. Select "Wipe & Reset» → «Wipe Cache».
4. Confirm the action and restart the phone.

Cleaning through MIUI|Manual deletion of files|Transfer to memory card|Cloud storage|I'm not doing anything.-->

3. Hidden folders MIUI: What can and cannot be removed

System system MIUI It creates dozens of hidden folders, many of which can be cleaned without risk, but there are also critical files that will crash if you delete them.

Safe to remove:

• 📂 MIUI/debug_log — Error logs (all files can be deleted).
• 📂 MIUI/ota — Old update files (except current firmware).
• 📂 Android/obb — cache of games (if the game is deleted).
• 📂 DCIM/.thumbnails — Miniatures (the system will automatically restore them).

Delete DANGEROUS:

• 🚫 MIUI/system — System files of theme and launcher.
• 🚫 Android/data/com.xiaomi.* — system-application data.
• 🚫 MIUI/backup — Backups of settings (unless you are sure they are not needed).

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Before you delete hidden folders, back up important data. MIUI/backup You can copy it to your PC and then remove it from your phone.

⚠️ Attention: Deletion of folder MIUI/extra If you lose your wallpaper or icons after cleaning, restart your phone or reset your theme settings to Settings. → Theme → My subjects. → Restore.

4. Memory cards on Xiaomi: which are suitable and how to set up

If your Xiaomi has a microSD slot, you can expand the memory to 1 TB.

Requirements for memory cards:

• 🔹 Format: microSDXC (for cards) >64GB).
• 🔹 Class speed: UHS-I Class 10 or U3 (videotape 4K).
• 🔹 Manufacturer: SanDisk Extreme, Samsung recommended EVO Plus, Kingston Canvas Go!.

How to format a card as an internal memory (Adoptable Storage):

1. Put the card in the phone.
2. Go to Settings → Memory → SD card.
3. Click on “Format as internal” (all data will be erased!).
4. Confirm the action and wait until it is completed (may take 5-10 minutes).

⚠️ Note: Once formatted as internal memory, the card cannot be used in other devices without completely erasing the data, and some applications (such as WhatsApp) may not work with the transferred data on the microSD.

What to do if your phone doesn’t see your memory card:

• 🔄 Reboot the phone.
• 🛠️ Check the card on another device (it may be damaged).
• 📱 Update the firmware (Settings) → The phone. → Updating the system).
• 🔧 Format the map in FAT32 or exFAT via PC (if the phone does not recognize it).

5. Cloud storage: an alternative to physical memory

If you don't want to spend money on a memory card, use cloud services. In addition to the Mi Cloud (5 GB for free), there are more capacious options:

How to set up autoload photos in Google Photos:

1. Install the Google Photos app from the Play Market.
2. Open it and log in to your Google account.
3. Go to Settings → Backup and Synchronization.
4. Turn on the switch and select quality ("High" - unlimited storage, "Original" - counts from a quota of 15 GB).

Once set up, all new photos and videos will automatically be uploaded to the cloud, and the old ones can be removed from your phone.

6. Memory Mistakes on Xiaomi: How to Fix

Sometimes the system shows incorrect memory data or gives out errors.

Error: “Memory is full” but few files

Reasons:

• 🔹 The system section is full of update cache.
• 🔹 The file system is damaged (for example, after incorrect removal of the microSD).
• 🔹 Virus or malware creates hidden files.

Decision:

1. Clear the update cache in Settings → Memory. → Cleanup → System cache.
2. Check your phone for viruses (for example, through Malwarebytes).
3. Reset the settings to factory (Settings → About phone → Reset settings).

Error: The memory card is not formatted as internal

Reasons:

• 🔹 The map is formatted in NTFS or exFAT (needed) FAT32 compatiblely).
• 🔹 The firmware of the phone does not support Adoptable Storage (relevant for older models on the phone). MIUI 10 and below).
• 🔹 The card is damaged or fake (check through the H2testw PC-only).

Decision:

1. Format the card in FAT32 via PC (use the SD Formatter utility).
2. Update the firmware to the latest version.
3. Try another card (preferably the original SanDisk or Samsung).

Error: Applications are not transferred to memory card

Reasons:

• 🔹 The app does not support portability (e.g. WhatsApp, Google Play Services).
• 🔹 The map is formatted as portable, not internal.
• 🔹 In the developer settings, transfer is disabled (Settings) → Additionally. → For developers → Forced to allow the transfer of applications).

Decision:

1. Check if the application supports portability (its storage settings should have the option “Change”).
2. Format the card as an internal memory.
3. Enable the developer option (if it is in your firmware).

7.Memory optimization for gaming and heavy applications

Games like Genshin Impact, Call of Duty Mobile, and PUBG It can take up to 10 to 15 GB each. How do you manage that:

Method 1: Cleaning the cache of games

Many games store temporary files that can be deleted without losing progress:

1. Go to Settings → Applications → Application Management.
2. Choose a game. → «Warehouse» → «Clear the cache».
3. To clean up your data (including save!) click “Clear Data”.

Method 2: Transfer games to a memory card (if supported)

Not all games allow portability, but some (like Asphalt 9) can be moved:

1. Set the game up.
2. Go to the game settings → «Warehouse» → «Change».
3. Select a memory card (if the option is active).

Method 3: Use of lightweight versions of games

Many popular games have "light" versions:

• 🎮 PUBG Mobile Lite (instead of mobile Lite) PUBG Mobile - weighs ~300 MB instead of 2 GB.
• 🎮 Call of Duty Mobile Lite (unofficial modifications).
• 🎮 Free Fire instead of Free Fire MAX (weight-gauge ~1GB).

Method 4: Cleaning up through Game Turbo

V MIUI There is a built-in game accelerator:

1. Open Game Turbo (the icon on the desktop or in the app menu).
2. Choose a game. → press three points → «Clear the cache».
3. For deep cleaning, use "Acceleration» → «Cleaning up memory».

FAQ: Frequent questions about memory on Xiaomi