How to expand Xiaomi’s internal memory with a memory card: the full guide 2026

Xiaomi smartphone owners often face a shortage of internal memory, especially on budget Redmi or Poco models with 32-64 GB of storage. Even after cleaning the cache and removing unnecessary files, the MIUI system continues to issue notifications about overflowing storage. The solution seems obvious: insert a microSD card and use it as additional space. But how to make sure that the applications are installed directly on the card, rather than in internal memory?

In this article, we’ll look at all the ways Xiaomi can expand memory, from standard SD formatting as an internal drive to hidden MIUI features and app install workarounds. It’s important to understand that not all methods are equally effective, and some can lead to data loss or slowdown of a smartphone. We’ve tested each variant on the Redmi Note 12 Pro+, Poco X5 Pro and Mi 11 Lite models with the latest versions of MIUI 14 — the results are summarized in the comparison table below.

Official method: formatting SD-maps as internal memory

The most obvious way is to use the built-in Android feature available on all Xiaomi smartphones with the Android 6.0+ MIUI version. The essence of the method is that the memory card is formatted as an extensible partition of internal storage, and the system begins to automatically transfer some data to it.

• 🔹 The card will be encrypted and tied to the device – you will not be able to read it on another smartphone or PC without formatting.
• 🔹 The speed depends on the class of the card (recommended). UHS-I/U3 Cheap microSDs can slow down the system.
• 🔹 Not all applications support external storage portability (especially system and protected games).

How to do this:

1. Insert the memory card into the slot (on hybrid models Xiaomi will have to choose: second SIM or microSD).
2. Go to Settings → Memory → Memory Map.
3. Slip on the three dots in the top right corner and select Storage Settings.
4. Click Format as internal and confirm the action.
5. Wait for the process to be completed (it can take 5-15 minutes depending on the size of the card).

Back up your card data (it will be deleted) |U3 or higher (e.g. Samsung EVO Plus) |Put your phone at least 50% on the phone |Disable important notifications during the process

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After formatting, the system will suggest moving some of the data (photos, videos, some apps) to the map. However, not all files can be moved - for example, MIUI updates and cache of system applications will remain in internal memory, and it is worth considering that the performance of a smartphone can drop by 10-30% with intensive use of a U1 card.

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If the card doesn't show up as internal memory after formatting, reboot the smartphone. Sometimes MIUI requires additional drive initialization.

2. Transfer of applications to SD-hand-write

If you don't want to format the card as internal memory, you can migrate apps to it selectively, which works on all Xiaomi smartphones with MIUI 12 and newer, but has limitations:

• 📱 You can only port applications that support this feature (many games and messengers block it).
• 🔄 Some of the data (cache, updates) will still remain in the internal memory.
• ⚠️ When you remove the map, the transferred applications will stop working.

Instructions:

1. Open Settings → Applications → Application Management.
2. Select the app you want to migrate (like Spotify or Netflix).
3. Slip on Warehouse.
4. If the option is available, click Change and select Memory Card.
5. Confirm the transfer and wait until it is completed (may take a few minutes).

⚠️ Attention: Don't put it on SD-System applications (e.g. Mi Browser or Security) can cause malfunctions MIUI, including the inability to update firmware.

To check which apps can be ported, use the filter in Application Management:

1. Open the Settings → Applications.
2. Slip on the three dots in the upper right corner and select the Filter.
3. Activate the option You can move to SD-map.

16-32 GB|64GB|128GB|256 GB or more-->

3. Use of the memory card as a portable storage (without formatting)

If you do not need to install applications on SD-You can use the map in Portable Storage mode, and you only need extra space for files (photos, videos, music), and you can use the map in Portable Storage mode:

• 📁 Move files between devices quickly (the card can be read on any smartphone or PC).
• 🎵 Store media files for playback in apps (for example, music in Spotify or video in the app) MX Player).
• 📱 Install APK-files directly from the card (if Installation from unknown sources is enabled).

How to set up:

1. Put the card in your smartphone.
2. In the notification of a new drive, select Use as a portable storage (or go to Settings → Memory → Memory Map → Storage settings → Portable storage).
3. Confirm the selection (no formatting is required if the card is already formatted in FAT32/exFAT).

To automatically save photos and videos to the map:

1. Open the Camera app.
2. Put the pin on the gear badge (⚙️) Or swipe left to open the settings.
3. Select a Retention Site → Memory map.

⚠️ Note: If you are shooting a video in 4K or use Pro mode in Xiaomi camera, save to slow cards (class) U1) It could lead to a record break or artifacts. 4K A card with a write speed of at least 60 MB/s is recommended (for example, SanDisk Extreme).

4.Backsteps: Install applications on SD without root

MIUI limits the ability to install applications on a memory card, but there are several legal workarounds that do not require root rights.These methods are suitable for Xiaomi models where official formatting as internal memory is not available (for example, on some firmware for the Poco F3 or Redmi 10).

Method 1: Install APK directly from the card

1. Download. APK-application file to memory card (for example, through a browser on a PC).
2. Connect the card to your smartphone.
3. Open any file manager (such as Mi File Manager) and search for an APK.
4. Tap the file and confirm the installation (pre-enable Settings → Applications → Special permissions → Install from unknown sources for the file manager).

Method 2: Use AppMgr III Application

AppMgr App App III (Available on Google Play, allows you to transfer applications to SD-card even if this option is blocked in the settings MIUI. How it works:

1. Install AppMgr III from Google Play.
2. Open the application and provide all the permissions requested.
3. In the list of applications, find the one you want to transfer and tap on it.
4. Select the Move to SD card option (if it is active).

Method 3: Set up the map as internal via ADB

For advanced users, there is a method of formatting the card as internal memory through the ADB, if this option is hidden in MIUI. You'll need a computer and USB-cable:

adb shell sm set-force-adoptable true


adb shell sm partition disk:179,64 private

Where 179.64 is the card ID (you can find it by adb shell sm list-disks command), this method is risky and can lead to data loss or system failure!

5. Comparison of methods of memory expansion: which one to choose?

To determine the best way, compare all options on key parameters: speed, compatibility, risk and convenience. Data is based on tests of Xiaomi smartphones with MIUI 14 and memory cards Samsung EVO Plus (U3) and SanDisk Ultra (U1).

The table shows that the optimal balance between convenience and performance is given by portable storage (if you only need memory for files) or formatting as internal memory (if application installation is critical). ADB AppMgr III It is worth considering only in extreme cases.

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For most Xiaomi users, the best choice is to format the card as internal memory (if you need apps) or use it as portable storage (if you only need files).

6.Alternative ways to free memory without SD-map

If you don’t have a memory card or don’t want to risk smartphone performance, there are a few alternative ways to free up internal memory on Xiaomi:

• 🧹 Clearing the cache MIUI: Go to Settings. → Memory. → Clean.This will delete temporary files of system and user applications.
• 📂 Transfer files to the cloud: Use Mi Cloud (15GB free) or Google Photos to automatically upload photos and videos.
• 🗑️ Removing duplicates: Apps like Files by Google or CCleaner find duplicate files and debris.
• 🔄 Disable Auto Updates: In Google Play, turn off automatic app updates or limit it to Wi-Fi only.
• 🎮 Cleaning up these games: Games like PUBG Mobile or Genshin Impact take up gigabytes.Remove the game cache in Settings → Annexes → [play-name] → Warehouse → Clear the data.

It’s also worth checking which apps take up the most space:

1. Open the Settings → Memory.
2. Slip it on the Appendix section.
3. Sort the list by size (by decrease).
4. Delete or clear the data of unnecessary applications.

⚠️ Note: Do not clear system application data (e.g. MiuiDaemon or SecurityCenter) this may result in a cyclical smartphone reboot or inability to log in.

7. Frequent errors and their solutions

When expanding memory on Xiaomi, users often face problems, and let’s analyze the most common and ways to eliminate them:

Error 1: Memory card is not determined

If the smartphone does not see the inserted microSD:

• Reset the device.
• Check the card on another device (it may be damaged).
• Clear the contacts of the card slot (use a dry brush or compressed air balloon).
• Format the card in FAT32 or exFAT on your PC (if it was in NTFS).

Error 2: You can’t transfer the application to SD

If the button is inactive on SD:

• Check if the app supports this feature (many games and instant messengers don’t).
• Update the app to the latest version.
• Use AppMgr III (described above).

Error 3: Slowly working after formatting as internal memory

If the smartphone has started to slow down:

• Check the class of the memory card (must be at least U3).
• Transfer back to internal memory the most resource-intensive applications (games, video editor).
• Turn off automatic downloading of files in messengers (for example, in Telegram or WhatsApp).

Error 4: Memory card damaged

If MIUI issues a notification, the Memory Card is damaged:

• Make a backup copy of the data (if the card is still being read).
• Format the card in FAT32 via PC (use the SD Formatter utility).
• If the error is repeated, the card is physically damaged, replace it.

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If after formatting the card as internal memory, the smartphone stopped turning on, remove the card and reset via Recovery (Power + Volume Up).

FAQ: Answers to popular questions