How to transfer data to the SD- card in Xiaomi Redmi 7: all ways + tips for optimization

Xiaomi Redmi 7 is one of the most popular budget smartphones with the ability to expand memory through a microSD card. But many users face the problem: how to transfer data to an external drive to free up internal memory and not lose important files? In this article, we will analyze all the working methods, from standard MIUI functions to hidden features that are not written in the official instructions.

It is important to understand that transferring data to the SD- card in the Redmi 7 card has nuances: not all applications support external memory, and some files (for example, messenger cache) can be “reset” after rebooting. We tested all methods on the MIUI 10-ZXXXZ-14 firmware and identified those that are guaranteed to work without the risk of data loss.

If you just bought a SD- card or want to optimize your phone’s memory, this guide will help you do everything quickly and without errors, starting with the preparation of the drive and ending with advanced tricks for power users.

1. Preparation SD-Maps: Formatting and Selection of File System

Before transferring data, you need to properly prepare a microSD card, which depends on speed, compatibility with applications and even the life of the drive. Redmi 7 supports cards up to 256 GB, but there are restrictions on the file system:

• 📁 FAT32 is compatible with all devices, but does not support files >4 GB.
• ⚡ exFAT is the best choice for Redmi 7. Supports large files (e.g., videos in 4K) and runs faster FAT32.
• 🔒 NTFS — Not recommended for Android. May cause reading errors.

If the card is new, it should be formatted directly on the phone:

1. Insert the SD- card into the slot (under the tray for the SIM- cards).
2. Go to Settings. → Warehouse → SD-map.
3. Tap format → as internal storage (if you want to merge memory) or portable (if you want compatibility with other devices).
4. Select exFAT and confirm the action.

⚠️ Warning: Formatting removes all data from the card! If it has important files on it, copy them to your PC first.

In Redmi 7, when formatted as internal storage, the system encrypts the card and it will become unavailable on other devices without resetting the phone. If you plan to use the SD- card in both your camera and smartphone, choose portable storage.

2. Transfer files through the standard file manager MIUI

The easiest way to transfer data is to use the built-in Explorer (or Files in MIUI), which is suitable for photos, videos, music and documents.

1. Open the Files app (the folder icon on the desktop).
2. Go to the Internal Storage tab.
3. Select a folder with files (for example, DCIM for photos or Download for downloads).
4. Press and hold the file (or tap Select for multiple files).
5. In the lower menu, click Move (or Copy if you want to leave the original).
6. Return to the root directory, select the SD- card and specify the destination folder.

To speed up the process, you can use the packet mode:

• 📂 Select the entire folder (like a Camera) and move it all over.
• 🔄 If there are many files, use Date Sorting (tap on the three dots in the upper right corner) to first transfer the oldest data.

⚠️ Warning: Don't move your Android folder manually, it may disrupt your apps. Use a separate method to port apps (see section 4).

3. Automatic transfer of media files (photos, videos, music)

If you take photos or videos regularly, you can set up automatic saving of new files directly to the SD- card, which eliminates the need to manually transfer data.

For the camera:

1. Open the Camera app.
2. Tap on. ⚙️ Settings (cog in the upper right corner).
3. Select a Retention Site → SD-map.
4. Specify a folder (for example, DCIM/Camera) or create a new one.

For downloads from the browser:

1. Open Chrome or MIUI Browser.
2. Go to Settings → Downloads.
3. Specify the save path on the SD- card (e.g., /storage/XXXX-XXXX/Download).

In MIUI 12+, when selecting a SD- card as the default storage location, the system may request permission to access the storage. Allow it, otherwise the files will be stored in internal memory.

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

Unlike files, transferring applications to the SD- card to the Redmi 7 is severely limited, because Android 9 (which runs the smartphone) blocks the full transfer of APK- files to external media, but there are partial solutions:

Method of 1: Use the SD- card as internal memory

If you format the card as an internal storage (see section 1), the system will allow you to transfer some of the application data (but not the APKs themselves!).

1. Go to Settings → Applications → Application Management.
2. Select an app (like Facebook or Spotify).
3. Slip the vault. → Change. → SD-map.

Method 2: Bypass utilities (for power users only)

Applications like App2SD or Link2SD allow you to create a symbolic link to a SD- card, but that requires root access. Without it, these methods do not work on the Redmi 7.

⚠️ Warning: Transferring system applications (e.g. Google Play Services) to the SD- card may cause crashes!

If you critically lack space for apps, consider alternatives:

• 🧹 Remove unused programs through Settings → Applications → Size (sorting by volume).
• ☁️ Move some of the apps to the cloud (e.g. Google Play Games for games).
• 🔄 Use Lite versions of apps (e.g. Facebook Lite instead of the main client).

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Before transferring applications, check their compatibility with the SD- card in Google Play. Some programs (for example, WhatsApp) block work with external memory.

5: Transfer of data via computer (USB- Cable or Card Reader)

If there is little space for temporary files on the phone or if transferring over MIUI is slow, you can use a PC, which is more reliable for large amounts of data (for example, transferring movies or backups).

Option 1: via USB- Cable

1. Connect Redmi 7 to your computer via cable (original).
2. On your phone, select File Transfer (MTP) mode in the connection notification.
3. On PC, open This computer - the phone will appear as a removable disk.
4. Copy files from the Internal Storage folder to the SD Card folder.

Option 2: Through the card reader

If the phone is not detected or the copying is too slow:

1. Remove the SD- card from the Redmi 7.
2. Insert it into the card reader and connect it to the PC.
3. Copy files directly bypassing your phone.

Copy speed through the card reader is usually 2-3 times faster than USB. For maximum speed, use a USB 3.0 card reader and format the card in exFAT.

6 Advanced Methods: ADB, TWRP and Manual Mounting

For users willing to dive into technical details, there are ways to transfer data that are not covered by standard MIUI features.These methods require expertise and can result in a loss of warranty or data if misused.

Method 1: Transfer through ADB (without root)

With Android Debug Bridge, you can manually move files, including hidden ones.

1. Enable USB Debugging (see spoiler in the previous section).
2. Connect your phone to your PC and open Command Prompt (Windows) or Terminal (Mac/Linux).
3. Enter the commands: adb shell cp -r /sdcard/DCIM /storage/XXXX-XXXX/ (replace XXXX-XXXX with the real ID of your SD- card, which can be recognized by the ls /storage command).

Method 2: Using TWRP (only for hard-wired phones)

If your Redmi 7 has a custom TWRP recap, you can:

• 🔧 Create a full backup of internal memory and restore it to the SD- card.
• 📁 Mount the SD- card as /data (risky, but possible for power users).

⚠️ Warning: Misuse of ADB or TWRP can lead to a phone blink (completely inoperable).These methods are only recommended if you understand what you're doing and you have a backup of the data.

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For most users, standard methods from sections 2–3 are sufficient. Advanced methods are only relevant if you are confident in your skills and ready for risks.

7 Optimization of SD- Cards: How to Avoid Errors and Slowdowns

After transferring data to the SD- card, many people experience problems such as brakes, reading errors or the sudden disappearance of files.

• 🛠️ Check the card regularly for errors: Insert it in your PC, open Properties → Service → Check (Windows), or use the fsck command on Mac/Linux.
• 🔋 Avoid cheap cards: For Redmi 7, the best cards are UHS-I (U1/U3) or A1/A2 (e.g., SanDisk Ultra or Samsung EVO Plus).
• 📉 Don't fill out 100% of the card: Leave at least 10-15% free space for stable work.
• 🔄 Turn off caching on SD: In some application settings (e.g. Google Maps), you can prevent saving the cache to the card.

If the map starts to "glutch":

1. Copy all the data on the PC.
2. Format it in exFAT via your phone (not PC!).
3. Check for broken sectors with H2testw (Windows) or F3 (Mac/Linux).

The average life of a microSD card is 3-5 years when used actively, and if it is older, it is better to replace it, even if it is still working.

8. Frequent errors and their solutions

When you transfer data to a SD- card in a Redmi 7, users often face typical problems, and we have collected the most common and ways to fix them:

If none of these methods worked, try:

1. Test the card on another device.
2. Update Redmi 7 to the latest version of MIUI.
3. Reset your phone settings (pre-made backup!).

FAQ: Answers to popular questions