Modern Xiaomi smartphones offer huge multimedia and work opportunities, but internal memory is often filled faster than expected. Users are faced with a message of space shortage, which leads to a slowdown and inability to install new applications. The solution is to use a microSD memory card, which allows you to significantly expand the available storage volume.
But just inserting a drive is not enough. To automatically store photos, music and some application files there, you need to configure the system correctly. There are nuances in the MIUI operating shell that differ from pure Android. The correct configuration will avoid confusion between internal memory and external storage.
In this article, we will look at all the stages of preparing, formatting and transferring data, you will learn how to make a flash drive the main storage for multimedia and where to move applications if standard methods do not work.
Preparation of memory card and compatibility check
The first step is to choose the right storage device. Not all memory cards are equally effective when working with smartphones. For modern devices Xiaomi recommends using Class 10 or higher cards such as UHS-I or UHS-II. Low read and write speeds will lead to the camera retaining pictures for a long time, and video can be interrupted when recording.
Note the maximum supported volume. Although many models support cards up to 256 GB or even 512 GB, older devices may not work properly with large storage. Before buying it, you should check the specifications of your model on the manufacturer's official website. Using cards larger than 128 GB on older Redmi Note models may require forced formatting in the exFAT file system, which not all controllers read consistently.
The physical setup also requires precision. SIM-The cards and the memory are usually on the end of the case. Use a special paper clip that comes in to remove the tray. Make sure the contacts of the card are downwards and the rounded angle matches the shape of the tray. After installation, the device will determine a new drive, but will not use it by default.
Formatting the drive as an internal storage
Once you have the physical installation, the system will suggest you configure the map. This is a critical point, because it depends on your choice whether you can read files on other devices. When you first connect in the notification curtain or in the Settings menu → Phone → Storage, you will notice the corresponding one. The system will offer two use cases: as a portable storage or as internal memory.
Selecting the "Adoptable Storage" mode encrypts the card and binds it to a particular phone, and you can't read data from that flash drive on a computer or other smartphone without formatting, which is ideal if you want to completely free up the built-in memory module and move the system and applications there.
If you choose Portable Storage, the map will remain readable on PC, but applications will be installed on it with restrictions. For most users who want to solve the problem of space shortage, formatting is optimal for internal use, despite the loss of versatility of the medium.
☑️ Pre-formatting verification
The formatting process takes time. During the operation, the system creates the necessary partitions and checks sectors for errors. Interrupting this process can damage the file table. Once completed, the phone can restart, and information about the new total amount of available memory will appear in the storage menu.
Setup to save camera data and downloads
Even after formatting, some applications continue to store data in internal memory by inertia, and to change this behavior, you need to manually change the settings in each key application, especially the camera, since photos and videos take up the most space.
Open the Camera app and go to the settings menu (usually a three-bar icon in the corner). SD-Now all new images and videos will be automatically sent to an external drive, the same action must be repeated for the recorder and screenshots, if such settings are available in your version. MIUI.
⚠️ Attention: When the memory card is overflowing, the camera may stop taking pictures or start recording videos of artifacts. Watch out for free space, as the system does not always warn of a critical level of filling of the external drive as aggressively as the internal one.
The same is true for the browser: files downloaded from the Internet are defaulted to the Download folder of internal memory. Go to your browser settings (Chrome, Mi Browser) and in the Downloads section, specify the save path to the browser. SD-This will save large files, documents and installation packages. APK system-partitioning.
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Periodically (once a month) check the folder.thumbnails on the memory card, which can accumulate cache miniatures of the gallery, occupying gigabytes of space.
Transfer of installed applications to a flash card
The most desirable, but often the most difficult, step is to migrate existing applications. In modern versions of Android and MIUI, Google has limited the ability to fully migrate programs to external media for security and stability reasons.
To perform the operation, go to Settings → Annexes → All applications. Select the desired program from the list. If the application supports portability, the "Change" or "Move to" button. SD-The map will be active. You click on it, you initiate the data process. Once you complete the main part of the application body will remain in internal memory, and the resource-intensive data and cache will move to the flash drive.
It is worth noting that system applications and many Google services cannot be ported, and games with high cache volume (for example, PUBG, Genshin Impact) can work unstable when running from an external card, especially if its read speed is not high enough, in such cases it is better to leave the game in internal memory, and transfer media files and documents to the map.
| Type of data | Possibility of transfer | Impact on speed | Recommendation |
|---|---|---|---|
| Photos and videos | Complete. | Minimum | Must be moved |
| Music and Films | Complete. | Absent. | Recommended |
| Social media | Partial | Average. | If necessary, |
| Hard games | Partial/No | High (brake) | Leave it inside. |
Why is the application transfer button grey?
Using a conductor to manage files
For manual file management, Xiaomi has a standard conductor preinstalled, which allows you to see the separation between internal memory and the memory. SD-In the top menu of the conductor, you can switch between storages or select the mode to display all folders at once.
When copying files through a conductor, it is important not to confuse the root directories. Internal memory is often labeled as Internal Storage or simply the model name, and the memory card is designated as SD Card. When moving large amounts of data (for example, folders with music in several gigabytes), use the function "Copy", not "cut" so that in case of a power failure, you do not lose files.
If a standard Explorer seems inconvenient, you can install third-party file managers such as Total Commander or FX File Explorer, which provide a more flexible interface for bulk transfer of data and allow you to hide system folders, which reduces the risk of accidental deletion of important configuration files.
⚠️ Warning: Never delete folders with Android names, DCIM (If you don't want to lose your photo), MIUI Or the System manually, which can cause applications to malfunction or crash in the operating system boot.
Problem Solving and Frequent Errors
During operation, users may encounter a situation where the phone stops seeing the memory card or reports a read error, most often due to incorrect extraction. Before physically removing the card, always use the software shutdown via the Settings menu. → Warehouse → SD-map → Extract.
Another common problem is low write speed, and if the phone is slowing down when you open the gallery, it's possible that the card speed class doesn't meet the system requirements, and if you're going to replace the drive with a more efficient one, you'll also need to check the card for errors by plugging it into your computer and running the standard disk check procedure.
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Stability of the smartphone with SD-The card is directly dependent on the quality of the drive itself. Cheap cards of unknown brands often fail after a few months of active recording.
If the system constantly offers to format the card, although it has data, the file system may be corrupted. In this case, the data on the PC and re-formatting by the phone itself (not the computer) often solves the problem.