How to transfer data from internal memory to SD-map 4X: 5 Proven Methods

Xiaomi Redmi 4X With its modest 16 or 32GB of internal memory, it often faces space shortages — especially if you’re actively shooting videos, installing games, or storing large collections of music. SD-The map seems to be an obvious solution, but in MIUI This process has nuances: from the limitations of Android 6.0 to the features of the file system. F2FS, Unlike the new Adoptable Storage smartphones, it requires manual tuning or workarounds.

In this article, 5 working methods for data portability (including applications), comparing the speed of memory cards of classes A1 and UHS-I on Redmi 4X, as well as solving common errors like “No space” when trying to move. All instructions are tested on MIUI 8-11 and are relevant for devices with an unlocked or locked bootloader. If you have already tried to transfer files and received the message “Application portability disabled by the administrator of the device”, here you will find an explanation and a workaround.

Preparation: which SD-map to choose for Redmi 4X

Not every microSD is good for a stable Redmi 4X. Not only is it volume (maximum 256 GB), but it's also speed class. The smartphone supports UHS-I (Ultra High Speed) cards, but the actual read/write speed depends on the device's memory controller. For example, a SanDisk Ultra A1 card will perform better than a cheap Class 10 without the A1 marking.

It is important to consider:

• 🔹 Minimum class: Class 10 or UHS-I (U1). Class Cards 4/6 They will stop when recording video. 1080p.
• 🔹 Marking A1/A2: Optimized for applications. On Redmi. 4X difference A1 and A2 Minimal due to Snapdragon processor limitations 435.
• 🔹 File system: Maps up to 32 GB are formatted in FAT32, And then you go to exFAT, and the last one supports the files. >4 GB (relevant for video).
• 🔹 Brands: Preference give to SanDisk, Samsung EVO Kingston Canvas – they are less likely to be faked.

⚠️ Note: If you plan to transfer applications to SD-Avoid cards with controllers SM3275 or INNAND — They often cause "App is not responding" errors due to the slow rate of random recording (4K IOPS).

2. Method 1: Transfer files (photos, videos, music) through the "Conductor"

The easiest method is manually moving through the standard MIUI Explorer, which requires no root rights and works even on a locked bootloader, but it has a limitation: you can not transfer system files (for example, an Android folder with application data).

Step-by-step:

1. Open the Files app** (the folder icon on the desktop).
2. Go to the Device tab → Internal memory.
3. Select files/folders (long press) → To select all photos in the folder DCIM press ⋮ → Highlight everything.
4. Tap Move (arrow icon) → choose SD-map → destination folder (e.g. Pictures).
5. Confirm the transfer. The speed depends on the card class: for 10 GB of photo, the process will take 5-15 minutes.

SD-The card is formatted in exFAT (for files). >4GB)|

Battery charge >50% (Termination can damage files)|

There's plenty of free space on the map.|

Files are not used by other applications (for example, music is not played)

-->

If the error “failed to move” appears during the transfer, the reasons may be as follows:

• 🚫 The file is open in another application (for example, the video is played in the gallery).
• 🚫 Write protection is on the map (check the switch on the adapter).
• 🚫 Destination folder for SD-The card has inadmissible symbols (for example, # or?).

💡

To speed up the transfer, connect your smartphone to charging – MIUI limits the performance of the processor at low battery charge (<30%).

Method 2: Automatic transfer of photos and videos through the "Gallery"

Annex Gallery** to the MIUI It has a built-in function to save new photos/videos directly to the SD-This does not carry existing files, but prevents the internal memory from being filled in the future).

How to set up:

1. Open the Gallery»** → slip ⋮ → Settings.

⚠️ Note: If after changing the save location, new photos are still stored in internal memory, check the permissions for the Gallery application: Go to Settings → Annexes → Application management → gallery → Permissions, activate the Warehouse and the Camera, without these permissions. MIUI Ignore the conservation settings.

This method is not suitable for transferring existing photos, for which you can use Method 1 or specialized applications like Files by Google, which can sort media files by date and type.

Method 3: Transfer applications to SD-map (required) MIUI 9+)

Unlike pure Android, MIUI restricts the transfer of applications to SD-Redmi. 4X With Android 6.0, this feature only works for a part of the applications and requires pre-configuration, the main limitation is that you can not port system applications (for example, Settings or Phone) and those that use Google Play services.

Instructions for transfer:

1. Go to Settings → Applications → Application Management.
2. Select an app (like Facebook or Spotify).
3. Tap Storage → Change (if the button is inactive, see the Problem Solving section below).
4. Choose. SD-map and confirm the transfer. The process will take 1-5 minutes depending on the size of the application.

If the button is inactive, change:

• 🔧 Make sure that SD-The card is formatted as an internal memory (see Method 5).
• 🔧 Check if the application is installed in /system/app (This is seen in the appendix information).
• 🔧 Update. MIUI Up to the latest version – in the old builds (MIUI (8) application portability is often blocked.

Method 4: Formatting SD-The card is an internal memory (adoptable storage)

Adoptable Storage feature, which appeared in Android 6.0, allows you to combine» SD-I have a card with internal memory on Redmi. 4X This method works, but it has a critical limitation: once formatted, you can't retrieve the map without losing data.

Advantages of the method:

• 🔹 Applications are installed on the card automatically (if selected in the settings).
• 🔹 No portability restrictions (except for system applications).
• 🔹 Application data (such as game cache) is also stored on SD-map.

How to set up:

1. Put it in. SD-smartphone-card.
2. When the notice “New” appears SD-map" tap "set up the setup → Used as an internal memory.
3. If the notification does not appear, go to Settings → Warehouse → SD-map → ⋮ → Storage settings → Formatting as an internal.
4. Confirm the formatting (all data on the map will be deleted!).
5. After the reboot, select Move Data Now (optional) or set up the transfer manually.

⚠️ Note: After formatting as internal memory: the card cannot be used in other devices without completely erasing. application speeds will decrease by 10-30% (depending on class) SD-When removing the card without safely turning off (Settings) → Warehouse → Shut down. SD-map) data may be damaged.

💡

Formatting SD-Cards as internal memory are the only way to transfer all supported applications (including games) to Redmi. 4X However, this method is irreversible and reduces card performance by 15-25% due to encryption.

Method 5: Transfer data over PC (for large volumes)

If you need to move tens of gigabytes (like a movie collection or backup), it’s easier to use a computer, which is also useful if your smartphone slows down when you’re working with large files through MIUI Explorer.

Instructions for Windows:

1. Get Redmi on board. 4X PC-only USB-cable (file transfer mode (MTP)).
2. Open This Computer → Find the Redmi 4X device.
3. Copy files from Internal Storage folders (for example, DCIM, Download) in the folder SD-map.
4. To speed up, use programs like TeraCopy (supports resumption after a cliff).

If the PC can't see SD-map:

• 🔌 Check what's in the settings. USB (Settings → Additionally. → Regime. USB) chosen MTP, Not Charging.
• 🔌 Update Xiaomi drivers via the official website (Support section»).
• 🔌 Try another one. USB-cables – cheap cables often do not support data transmission.

💡

To avoid duplicate files, sort them by date of change before transfer. In Windows Explorer, click View → Sort → Modified and select the oldest files to transfer.

7. Solving Typical Errors in Data Transfer

Even after you set it up correctly, Redmi 4X users are still experiencing bugs, and here are the most common ways to fix them:

If, after transferring the applications to SD-The map is not updated through Google Play:

1. Go to Settings → Applications → Google Play Store → Storage.
2. Click Clear the cache and Clear the data.
3. Reboot your smartphone and repeat the update.

8.Alternative methods: Root and third-party applications

If standard methods fail, radical measures remain, such as obtaining root rights or using specialized utilities, which are risky (Anti-Rollback can work on a locked bootloader), but give full control of the storage.

Root methods:

• 🔧 FolderMount – reassigns application folders to SD-map.
• 🔧 Link2SD — Create symbolic links for applications (requires a separate section) ext2/ext4 on SD-map).
• 🔧 App2SD — automatically transfers cache and application data.

How to get root on Redmi 4X:

1. Unlock the bootloader through the Mi Unlock Tool (requires an account binding Mi).
2. Install a custom TWRP recavator for santoni (codename Redmi 4X).
3. Sweep Magisk through TWRP to get root without the Anti-Rollback trigger.

⚠️ Attention: On Redmi 4X s MIUI 10+ Using SuperSU instead of Magisk leads to a blink due to conflict with dm-verity.Always check that Magisk modules are compatible with your version. MIUI forum XDA.

FAQ: Frequent questions about data transfer to Redmi 4X