Modern Xiaomi and Redmi smartphones have impressive specs, but internal memory is often not enough for the growing volume of media. Users are regularly faced with a notification that the storage is overcrowded, which slows down the system and prevents the installation of new programs.
Moving files to an external medium not only frees up precious internal space, but also keeps your data safe when resetting. The process of transferring information on devices with a MIUI shell or HyperOS has its own features, which are important to consider for the correct operation of applications. Next, we will discuss detailed algorithms for actions for different types of content.
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Use UHS-I or higher memory cards to avoid delays when recording 4K video and running heavy applications.
Preparation of memory card and smartphone for work
Before you start transferring data, you need to physically install the memory card into the device if the slot is still free. In most Xiaomi models, the tray is combined, so you need to remove it with a special clip and correctly position the microSD according to the circuit on the holder. Once turned on, the phone automatically recognizes the new media and offers options for its use.
The system may request formatting of the drive, as the card file system may not be compatible with Android requirements. It is usually recommended to choose formatting as a portable storage, which will allow you to use the card for photos, videos and music, and transfer it between devices without losing data.
- 📱 Insert the card into the phone turned off or through the notification menu after turning on.
- 💾 Select the option “Use as a portable storage” in the window that appears.
- ⚙️ Wait for the error check and indexing of files to be completed by the system.
- 📂 Make sure that a new section with your card name appears in the File Manager.
It is important to understand that formatting will completely destroy all data already on the map, so copy important documents to the computer beforehand, if they were there. If the system does not see the drive, try restarting the device or checking the integrity of the contacts on the memory card itself.
Transferring photos and videos through a standard conductor
The easiest and safest way to free up space is to move media content that takes up the lion's share of gigabytes, and to do so, the MIUI has a powerful file manager in its shell that allows you to copy and move without third-party software, and you first need to open the Explorer or Files app on the home screen.
In the manager interface, go to the internal storage and find the DCIM folders (where photos and videos from the camera are stored) and Pictures (screenshots and images from messengers), selecting the desired files or entire folders, the user must select the “Move” or “Copy” function in the lower action menu.
☑️ Algorithm of photo transfer
Once you have selected the action, the system will suggest you specify the target directory, and you need to go to the memory card section and create a new folder with a clear name, for example, Archive_Photo, So we don't want to get confused in the future, and the final step is to confirm the operation, and then the files disappear from the internal memory and appear on the external media.
⚠️ Note: Do not interrupt the process of moving large amounts of data, otherwise files may become corrupted or unreadable.
If you move high-resolution video, the process can take a few minutes depending on the speed of the card recording, during which time it is better not to run heavy games or applications that require active disk I/O, so as not to create resource conflicts.
Configure saving photos and videos immediately on SD-map
To avoid manually transferring files every time, you can set up your smartphone camera so that new images are automatically saved to an external drive, especially for mobile photography enthusiasts who take hundreds of frames a day and quickly fill in the built-in buffer.
To activate this feature, you need to launch the Camera application, click on the menu icon (three bars) in the upper right corner and go to Settings. SD-map" and activate the appropriate switch.
| Parameter | Internal memory. | SD-map | Recommendation |
|---|---|---|---|
| Recording speed | High (UFS) | Depends on the class of the card. | 4K 60fps requires a U3 card |
| Reliability | Tall. | Medium | Backup regularly. |
| Reading speed | Instant. | Possible delays | Use it in the gallery. |
It’s worth noting that when shooting video at maximum resolution (like 8K or 4K at 60 frames per second), the phone may ignore this setting and write the file into internal memory.This is because the data stream is too large for standard memory cards, and Xiaomi’s built-in drive provides write stability.
Why the camera writes «SD-card too slow»?
Moving installed applications to an external medium
Unlike media files, porting apps to Android is limited for the sake of security and stability, not all programs support movement, and Xiaomi and Google system services are not portable at all, but for some games and utilities, this is possible.
To check for the option, go to Settings, then select Apps and All Apps. Find the program you want in the list, click on it, and select Memory. If the Change button is active, the system will allow you to move the application to the memory card.
- 📲 Open the settings of a particular application through the general list of programs.
- 💾 Click the "Change" button in the Memory Use section.
- 🔄 Choose «SD-map and confirm the action in the pop-up window.
- ⏳ Wait for the application data migration process to be completed.
It should be remembered that after transfer, the application may run slower, especially if the memory card has a low read speed of random blocks.
⚠️ Note: Transfer of messengers (WhatsApp, Telegram) to SD-The card can cause you to lose your correspondence history if you crash, as databases require quick access.
Using a memory card as an internal storage
There is a more radical method to combine card and phone memory into a single space, a feature known as Adoptable Storage that makes an external drive part of the system partition, encrypting it for use only on that particular device.
To activate the mode, you need to go to the storage settings, select your SD-Click Format, and in the menu that appears, select "Use as internal storage" and the system will warn you that all data will be deleted and the card will only work with this phone.
Once the procedure is complete, the phone may need to restart, from which point on, the system will automatically install new apps and store their data on the card if the internal memory is full, an effective way to turn a budget smartphone with 32 GB into a device with a large margin of space.
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Internal storage mode requires a high reliability card, as a drive failure can cause the entire phone to fail.
But there's a downside to this method: you can't just take out a card and paste it into a computer or other phone without fully formatting it, and the data will be encrypted with a specific Xiaomi device key, making it unavailable elsewhere.
Typical problems and ways to fix them
Despite the simplicity of the procedure, users sometimes experience errors when working with external drives; the phone may not see the card, write data slowly or suddenly turn off the media; most often, the cause lies in file system incompatibility or physical damage to contacts.
If the device says that the card is damaged, try connecting it to the computer through an adapter and check for errors with standard Windows or macOS. Also helps re-formatting directly in the smartphone menu in FAT32 or exFAT format.
In cases where the transferred files are displayed twice in the gallery (copies in internal memory and on the map), you must manually delete the originals from the internal storage.