Ownership of Xiaomi's modern smartphone, whether it's a budget Redmi or a flagship Mi, is often overshadowed by a lack of built-in storage.High-quality photos captured on camera at 108MP resolution, and heavy-duty ones. 4K-Videos quickly fill the available space, the system starts to run slower, and installing new applications becomes impossible without removing old ones, and in this situation, the only rational solution is to use a microSD memory card.
The process of transferring data in the MIUI shells and the new HyperOS has its own features that must be considered to preserve the integrity of files. The internal memory of the device and the external drive work on different protocols, and simply dragging files does not always solve the problem of lack of space for system processes.
In this article, we will take a closer look at all the steps of external storage, learn how to format a map so that it works as an extension of the system, and avoid common mistakes that lead to loss of information.
Preparation of memory card and smartphone for work
Before you start any manipulation, you need to make sure that your memory card is compatible with your smartphone. Most modern Xiaomi models support cards up to 512 GB, and some flagships - up to 1 TB. However, the speed depends on the class of the card. To record high-resolution video and install applications, it is recommended to use cards labeled Class 10, U3 or V30.
Insert the card into the corresponding slot, which is often combined with the slot for the second. SIM-Use a special paper clip from the delivery kit to remove the tray. Pay attention to the correct orientation of the contacts: the card should be tight, without distortion. Once the phone is turned on, the system automatically detects a new drive.
☑️ Pre-work checks
The first step is formatting. It's a mandatory procedure that creates a new file system that Android understands. Without this step, the phone may not see the files or work with them extremely slowly. During the formatting process, all the data on the map will be deleted, so if there is important information on it, copy it to the computer in advance.
Configuring a memory card as an internal storage
One of the most useful Android features available on Xiaomi devices is the ability to use the app. SD-This allows you to install applications directly to an external drive, which is critical for devices with a small amount of internal storage. However, it is worth considering that after such formatting, the card will become unreadable on other devices without a special reset.
To activate this feature, go to the settings menu. The path may vary slightly depending on the shell version, but the logic remains the same. Find the storage section and select your card. The system will offer two uses: as portable storage or as internal. Choose the second option for maximum expansion.
- 📱 Open Settings and go to About Phone section.
- 💾 Select the item Storage or Memory.
- 💿 Click on your name. SD-maps.
- ⚙️ Select the option to Format and confirm the action.
- 🔄 In the window that appears, select Use as internal storage.
⚠️ Note: After formatting the card as internal memory, removing it without first unmounting in the settings can lead to a malfunction of applications whose data was transferred.
The system will suggest moving existing data immediately or later. It is recommended to choose to migrate now to make room in the main partition. The process can take from a few minutes to an hour depending on the amount of information, and the write speed at this point will be lower than usual, as there is active work with the file system.
Why does the card slow down after formatting?
Transfer of photos and videos through the Explorer
The most common scenario for using an external card is storing media files. The cameras of modern Xiaomi smartphones create large files, and they are automatically saved on the Internet. SD-The map is the best solution for users, and you can configure it in the standard Camera app as well as in third-party editors.
To transfer your existing images, use the built-in file manager. In the MIUI shell, it is called Explorer, and in pure Android or some builds of HyperOS it can be called Files. Open the application and find the DCIM folder where the photos and videos from the camera are stored by default.
Select the files you want or entire folders with a long press. In the bottom menu that appears, select the option “Move” or “Copy.” The difference between them is significant: copy creates a duplicate by taking up space in both places, and move physically changes the file address in the system, freeing up internal memory.
- 📂 Open the Explorer and go to the folder DCIM or Pictures.
- ✋ Press and hold your finger on the files to highlight.
- 📤 Press the More button (three dots) and select Move.
- 📀 As a target, indicate your SD-map and create a new folder.
Once you have completed the operation, check the result by opening the gallery. Images should be displayed correctly. If you are using cloud services such as Google Photos or Xiaomi Cloud, make sure that sync does not start again for all files, which may require additional traffic.
Moving applications and cache to SD-map
Unlike photo porting, app migration is more complex and limited. Since Android 6.0, Google has introduced Adoptable Storage, but many vendors, including Xiaomi, often limit or hide it for ordinary users, and this is done to ensure system stability, since the speed of the applications depends on the speed of the map.
However, you can migrate some applications through standard settings, go to the application management section, select the program you want, and see if the Change button is active in Storage, and if it's gray or not, the app developer has banned installation on the external drive.
For advanced users, it is possible to use USB debugging and ADB commands to force any application to be ported, but this requires a computer connection and special commands, a method that is not recommended for beginners, as it can lead to unstable system operation.
adb shell pm setInstallLocation 2This command changes the default location of the installation, 0 returns the system's automatic selection, 1 installs internal memory, and 2 prefers external storage, but even then, not all applications will be able to move completely - some of their data will always remain in the internal partition.
⚠️ Note: When transferring banking applications and instant messengers to a memory card, biometric protection or notifications may be disrupted.
Automatically save new data to the map
To avoid manually transferring files every time, it’s more convenient to set up automatic saves, not just for the camera, but for other services, such as Telegram messenger or Chrome browser, which can save downloaded files directly to an external drive if you give them the appropriate path.
In the Xiaomi Camera app, the settings are in the top corner of the screen. Click on the menu icon (three bars) and find the item that is responsible for saving priority «SD-From now on, all the new images and videos will be recorded there.
The same can be done with a voice recorder and some video editors. Xiaomi system settings often have a global setting called “Default Storage”; if you change it, the system will try to save all new downloads from the Internet and files from applications to external media.
- 🎥 Open the Camera app and click the settings menu.
- 💾 Find the item Save on SD-map and activate it.
- 🌐 In the browser settings, specify the path of loading to an external drive.
- 📱 Check the settings of messengers (WhatsApp, Telegram) in the section "Data and storage».
💡
Automating data retention is the key to order. SD-maps in system applications, you will forget about the problem of space shortage for years.
Comparison of data storage methods
The choice between internal memory and memory card often depends on the type of data, and the table below will help you navigate which files and applications are best stored for maximum performance and security.
| Type of data | Recommended seat | Reason for choosing |
|---|---|---|
| System applications | Internal memory. | Maximum launch speed and stability |
| Photo and Video (archive) | SD-map | Saving expensive interior space |
| Heavy-graphics games | Internal memory. | Avoiding braking when loading textures |
| Music and podcasts | SD-map | Low requirements for reading speed |
| Navigator cache (Offline maps) | SD-map | Maps take up a lot of space, but do not require high speed. |
Using a memory card for archival data is a great strategy: you can store years of correspondence, old projects and a family photo archive without fear that the phone will stop accepting updates due to overflow, and the main thing is to regularly back up the card itself, since flash memory tends to fail without warning.
Frequent problems and their solution
Despite the simplicity of the procedure, users can encounter errors «SD-The card is corrupted" or "failed to format. "In most cases, this is solved by re-formatting through the computer using the utility. SD Formatter, which creates clean markup without errors.
Another common problem is the slow operation of the gallery. If you are running through the photo delays, it is possible that the card has a slow reading speed of random blocks, in which case you should consider buying a more powerful drive specifically designed for mobile devices (mobile series or Application Performance Class).
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If the phone stopped seeing the card after the system upgrade, try removing it, erasing the contacts with a pin and inserting it again, and contact oxidation is a common cause of failure.
Also worth mentioning is file system compatibility. Android prefers exFAT for large-volume (over 64 GB) cards and FAT32 for smaller ones. If your card is formatted in NTFS (Windows standard), the phone will only be able to read files, not write new ones. Use exFAT for full compatibility.