Owners of budget and mid-budget Xiaomi smartphones often face a critical shortage of free space in internal memory. The MIUI system, taking up a significant amount of space, leaves the user only a fraction of the declared gigabytes, which are quickly filled with messengers, app cache and multimedia files. When the phone begins to slow down or issue notifications about storage overflow, the most logical decision is to use an external SD card.
However, the process of data transfer on Xiaomi devices has its own nuances, depending on the version of the HyperOS shell or MIUI. Android of the latest versions limits the direct transfer of executable application files, but work with photos, videos and documents can be optimized completely. In this article, we will discuss how to correctly configure the file system to free up precious space without losing the performance of the gadget.
Before you start any manipulations, you need to make sure that your model supports memory expansion. SIM-So you need a paper clip to extract the card, make sure the card is formatted in the file system. FAT32 or exFAT, otherwise the smartphone may not see it or work with errors.
Preparation of memory card and smartphone for work
The first step is to physically install the media and set it up in the system first. Once you have inserted the card into the smartphone that is turned off or on, the system will automatically prompt it to be configured. Select the option “Use as a portable storage” if you plan to transfer it between devices, or “Use as internal storage” to maximize the system partition (the function can be hidden in new versions of MIUI).
⚠️ Note: Formatting a memory card will completely destroy all data on it. Be sure to back up important files on your computer before starting the procedure.
Once formatted, the system will create the necessary service folders. It is important to understand that the write speed directly affects the speed of the phone. If you use a cheap low-end card (for example, Class 4), the menu interface and the launch of heavy applications can slow down. It is recommended to use cards of the UHS-I standard or higher at read speeds of 80 MB / s.
You can check the status of the card in Settings → About Phone → Storage. This shows the total volume, occupied space and remaining space. If the card is correctly identified, a new section will appear in the list of disks with the name of the card brand or “SD Card”.
- 📱 Make sure the smartphone is fully charged or connected to a power source during formatting.
- 🔄 After installing the card, it is recommended to restart the device for correct mounting of partitions.
☑️ Pre-transfer check
Setup of automatic photo and video saving
The most voluminous content that consumes memory is photos and videos. Xiaomi’s camera by default saves all the pictures in internal memory, but this option is easy to change. Open the Camera app, click on the menu (three bars or gears) in the corner of the screen and find the "Save in" switch. SD-map».
Once this option is activated, all new images and recordings will be automatically sent to an external medium, as well as serial shooting and recording video in high resolution 4K. However, it is worth remembering that old photos taken before this feature is enabled will remain dead weight in the internal storage until you move them manually.
Similar settings exist in messengers: Telegram and WhatsApp can specify the way to save the received media files. Telegram go to Settings → Data and memory → Save path and select a memory card, which will prevent duplicate files and help keep the system clean.
- 📸 Enable auto-save in the Camera app immediately after purchasing your phone.
- 💬 Configure the save paths in WhatsApp, Viber and Telegram in their internal settings.
- 📹 High-resolution videos take up more space for them. SD-map is the perfect solution.
Why the camera sometimes ignores the camera SD-map?
Transfer of applications and their data to an external drive
The issue of portability of installed applications (APK) It is the most difficult version of Android today, and Google has restricted the ability to move programs to an external drive entirely for security and stability reasons. SD-map that can be activated in the settings.
To check for portability, go to Settings → Applications → All apps. Select the program you want, find Memory or Storage. If the Move button is active (not grey), you can flip the app's body, but the cache and some system files often stay inside.
| Type of data | Possibility of transfer | Impact on speed |
|---|---|---|
| Photos and videos | Complete (100%) | Minimum |
| Documents and Music | Complete (100%) | Absent. |
| Annexes (Games) | Partial / Through ADB | Notable (depending on the map) |
| System cache | Impossible. | - |
There is an advanced method through ADB (Android Debug Bridge, which allows you to “cheat” the system, making it count SD-This requires a connection to a computer and input of the sm partition command. This method requires root rights or an unlocked bootloader in some cases and is not recommended for beginners, since when you extract the card, the applications will stop working.
Using a file manager to manually move
Xiaomi uses the standard File Manager app to manually manage files, which allows you to see the folder structure and move objects between internal memory (Internal Storage) and an external card (SD Card), and the interface is divided into tabs, which makes navigation easier.
To move files, open Explorer, go to the data folder (for example, DCIM/Camera Press and hold your finger on the file or folder to highlight. From the bottom menu, select "Move" (Cut), then go to the section. SD-maps, select the target folder and click "Insert" (Paste).
⚠️ Note: Do not move system folders with names like Android, MIUI or data manually without understanding their purpose, which can lead to malfunctioning of applications or loss of settings.
It's also useful to create a structured folder system on a memory card, such as Archive 2026, Work, Entertainment, which will help you quickly find the right documents in the future without going through thousands of files in the root directory, and regular cleaning in the internal storage will prolong the life of the smartphone.
- ✂️ Use the Cut feature to avoid creating duplicate files that take up space twice.
- 📂 Create thematic folders on SD-map.
- 🔍 Sort files by size in the explorer to quickly find heavyweights».
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Use the Cleanup feature in Xiaomi’s Security app before transferring it, and it will find temporary files and remnants of deleted apps that are also taking up space.
Compatibility issues and possible errors
Even if you follow all the instructions, users can experience read or write errors. Often the problem lies in the file system. Android works best with exFAT for cards larger than 32 GB. If your card is formatted in NTFS, the smartphone can see it, but can not write data without third-party software.
Another common mistake — «SD-This may indicate file system logic errors or physical wear and tear, try to remove the card, paste it into your computer through a card reader, and check for errors with standard Windows tools or utility. SD Formatter.
If the phone periodically loses the card or the applications installed on it, fly out, perhaps the contacts in the slot have oxidized. Carefully wipe the contacts of the card with a soft eraser or an alcohol wipe. It is also worth checking whether the card sits tightly in the tray - backlash can cause the contact to break when vibrating.
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Stability of work SD-The cheap cards often fail, taking your data with them.