How to transfer data from the phone memory to SD-Map in Xiaomi: 5 proven ways

Xiaomi’s internal memory is clogged faster than it seems: high-resolution photos, app cache, uploaded files all take up precious gigabytes. Fortunately, most Redmi, POCO and Mi models support microSD card expansion. But how do you migrate data so you don’t lose files and slow down your phone?

This article will help to understand the nuances of data transfer to SD-map in Xiaomi devices under control MIUI We will look at official methods (including configuring the card as an internal drive), application workarounds, and typical errors that can lead to a failure. POCO X3 Pro, where SD-card SIM.

Before you start, check two key points: the file system format of your card (should be FAT32 or exFAT) and its speed class (recommended UHS-I U1/U3 or Class 10 for 4K video). If the card is new, it may need to be formatted directly on the phone - read about this in the section on training.

1. Preparation SD-maps: formatting and compatibility check

Not every microSD card is good for Xiaomi, and the manufacturer recommends using cards up to 2TB (for modern models) with an exFAT or FAT32 file system. The phone doesn't recognize NTFS cards. If you insert a card and the phone doesn't see it, it's probably a problem in the format.

To format the card directly in the smartphone:

1. Insert the card into the slot (if a hybrid slot is used, remove the second SIM).
2. Go to Settings. → Memory. → SD-map.
3. Click Format and select exFAT (optimum for >4GB files).
4. Confirm the action – all data on the map will be deleted!

⚠️ Note: If you format the card as internal memory (Use as internal storage option), it cannot be retrieved without data loss.This mode is only suitable for permanent memory expansion, but can reduce the speed of the phone.

2. transfer files (photos, videos, music) through the built-in file manager

The easiest way to free up memory is to transfer multimedia files, and MIUI has a built-in Files by Google or the standard Mi File Explorer app.

1. Open the Files app (folder icon).
2. Go to the Category tab and select Images, Videos or Audio.
3. Press and hold the file to select, then mark the rest (or click Select All).
4. Then, click the button “More (three points)” → Move.
5. In the list of locations, select SD-map and specify the destination folder (for example, DCIM/Camera photo).

💡 Tip: In order not to transfer files manually, set up automatic photo / video saving to the computer. SD-map in the Camera appendix:

• 📷 Open the chamber. → press on ⚙️ Settings → Memory. → choose SD-map.
• 🎥 Video may require a speed class card U3 or V30 (Otherwise, the recording will be interrupted).

3. Transfer of applications to SD-map: restrictions and workarounds

Unlike files, the application is transferred to SD-Xiaomi maps are not that easy. MIUI 12, function Transfer to SD App settings are often missing or blocked, due to Google’s policies and Android 10 restrictions.+, where applications are installed by default in internal memory.

However, there are two working methods:

Method 1: Through Application Settings (if available)

1. Open Settings → Applications → Application Management.
2. Select the app you want (like Facebook or Spotify).
3. Press Warehouse. → Change. → SD-Card (if the option is active).

Method 2: Using ADB (for advanced users)

If the port option is blocked, you can use Android Debug Bridge (ADB), which requires a PC and enabled debugging over USB.

adb shell pm set-install-location 2

This command will force the system to install new applications on the SD-The default card. To get it back, use it:

adb shell pm set-install-location 0

⚠️ Attention: Transfer of applications to SD-The card can cause them to slow down or crash, especially if the card is Class 4 or lower.Do not tolerate system applications (such as Mi Home or Security) - this can disrupt the work MIUI.

4.Tune in. SD-The card is an internal memory (adoptable storage)

Adoptable Storage (Use of the Service) SD-The card as an internal storage device, which allows you to combine the memory of the phone and the card into a single unit, is useful if the internal memory is critically lacking, but has serious shortcomings:

• 🔒 The card cannot be removed without resetting the phone to the factory settings.
• ⚡ System speed may drop if the card is slow.
• 📉 Not all applications will work with this type of memory correctly.

To activate this mode:

1. Put it in. SD-map and wait for it to be discovered.
2. Go to Settings. → Memory. → SD-map → Set up.
3. Choose to use as an internal storage device.
4. Follow the instructions on the screen (the phone will offer to format the map and transfer some data to it).

Important: Once activated, Adoptable Storage will encrypt the card and be linked to the device, and it will not be read on another phone or PC without formatting.

5. Automatic data transfer using third-party applications

If the built-in MIUI tools seem inconvenient, you can use third-party filers.The best options for Xiaomi are:

Example of transfer via Solid Explorer:

1. Open the application and give access to the files.
2. In the left panel, select Internal Memory, in the right — SD-map.
3. Drag files or folders from one panel to another.
4. Confirm the transfer (not copying!).

💡 If you are transferring large numbers of small files (such as music), use archiving. ZIP-file in internal memory, transfer it to SD-And then unpack it, which will speed up the process and reduce the risk of error.

💡

Before mass perenosom files check SD-You can plug it into your PC, open the Properties. → Service → Check (in Windows).

Typical errors and their solutions

When transferring data to SD-Xiaomi users often face problems, and here are the most common ways to fix them:

• 🚫 "SD-Card not found": Check if the card is inserted correctly (contacts should be facing upwards). If the phone can't see it, try formatting the card on a PC in the computer. FAT32.
• 🔄 "Files are copied, but not transferred": Make sure you have enough rights. MIUI Sometimes a recording permit is required for SD-Cards (included in security settings).
• ⚠️ "Applications don’t work after transfer: Return them to internal memory or check card compatibility (you need a class) UHS-I U1 minimum).
• 📉 "Phone brakes after Adoptable Storage" setup: Return to using the card as a portable drive. reset your phone settings or format the card outside the device.

⚠️ Note: If files are not available after transfer (for example, photos do not open in the gallery), check the path to the files. Some applications (Google Photos, Xiaomi Gallery) cache thumbnails and may not update them automatically. Restart the application or manually update the media library in the settings.

7 How to choose SD-Map for Xiaomi: recommendations 2026

The choice of microSD card is not only the amount of memory available, but also the speed of the phone, and Xiaomi in 2026, the following recommendations are relevant:

• 📱 For everyday use (photos, documents): SanDisk Ultra A1 Samsung EVO Select (class) A1, read-write ~100 MB/s).
• 🎮 For games and applications: SanDisk Extreme A2 or Lexar Play (class) A2, speed ~160 MB/s).
• 🎥 For the video. 4K/8K: Samsung Pro Endurance or SanDisk Extreme Pro A2 (class V30/U3, speed ~170 MB/s).

📌 Key Conclusion: Don't Save on SD-Cheap cards without certification are often forged, and their real speed can be 5 to 10 times lower than the stated speed. SD Card Tester or A1 SD Bench.

💡

For Xiaomi models with microSD support (for example, Redmi Note 12, POCO X5), the maximum card size is 2 TB, but the optimal choice is 256 GB or 512 GB. Cards at 1 TB or more often overheat and work slower.

FAQ: Frequent questions about data transfer to SD-map