Owners of budget smartphones such as Xiaomi Redmi 7A often face a lack of built-in storage, especially in versions with 16 or 32 GB of memory. MIUI operating system installed on the device takes up a significant part of the space, leaving the user with very little space to install new applications and save multimedia files. Overflow of internal memory leads to slowdown of the gadget, inability to update programs and even system failures.
Fortunately, the 7A features a hybrid slot that allows you to install an additional microSD card up to 256 GB. This solution radically changes the experience of using a smartphone, turning it from a device with minimal capabilities into a full-fledged multimedia center. However, just inserting a drive, you will not free up internal memory automatically – you need to properly configure the system and transfer data manually or programmatically.
In this article, we will discuss in detail all available methods of optimizing disk space. You will learn how to transfer photos and videos from the gallery, how to change the camera settings to save files immediately to an external medium, and what are the nuances when moving installed applications. Proper file system management will prolong the life of your smartphone and ensure its performance.
Before you start manipulating files, you need to make sure that the memory card is serviceable and compatible. Using poor-quality drives can lead to data loss or damage to the file system of the smartphone. It is recommended to use cards of Class 10 or higher speed from trusted manufacturers such as SanDisk, Samsung or Kingston.
Preparation of a memory card and installation in a slot
The first step is to physically install the drive and set it up in an Android environment. The SIM slot and memory card in Xiaomi Redmi 7A are located on the bottom end of the case. Use a special paper clip included in the delivery box or a thin needle to extract the tray. It is important not to confuse the orientation card, since it has a bevelled angle.
Once installed and turned on, the system will automatically detect a new drive. Unlike older versions of Android, modern MIUI shells require formatting the card before being used as internal or portable storage, a process that will destroy all data that may have been on the USB drive before, so back up important files on your computer.
⚠️ Note: When formatting a card as "Internal Storage", it is encrypted and will no longer be read on other devices without re-formatting. Use this mode only if the card is on the phone constantly.
To get started, go to the settings menu and find the memory management section, and the system will offer two uses: as a portable storage (for photos and music) or as part of internal memory. The first option is more versatile, the second one allows you to install heavy applications on a map, but binds them to a specific phone.
What is the difference between FAT32 and exFAT?
Configure the MIUI system to work with an external drive
Once formatted, you need to set recording priorities for system applications. The MIUI shell has a feature that allows you to save new files by default to an external medium, which eliminates the need for constant manual transfer, which is especially true for users who actively take photos or shoot videos.
Open the standard file manager, which is called Explorer in Xiaomi. In the Explorer settings (usually available through the menu in the upper corner), you can find the Memory settings or similar. SD-This will affect browser downloads, messenger files and new images.
It’s also worth checking system update settings. Sometimes MIUI may suggest using external memory for the update cache, which frees up valuable internal space. Make sure that in Settings → About Phone → The MIUI version is not worth the Wi-Fi-only download limit if you plan to use mobile internet, although this is more about traffic than memory.
It is important to understand that not all system processes can be redirected to an external drive, system service cache, temporary interface files, and some application databases will still take up space in the internal partition, so completely ignoring the cleaning of internal storage will not work.
Transferring photos and videos through a standard gallery
The most voluminous content that takes up space in a smartphone is media files. The Xiaomi 7A camera takes photos in good resolution, and 1080p video quickly eats up gigabytes. The built-in Gallery app is the most convenient way to transfer existing images.
Open the app and go to Album View Mode. Select the photos you want or entire folders (e.g. Camera, WhatsApp Images, Screenshot) and click on More or a three-dot menu, then select Move. The system will suggest selecting the target folder - indicate the path to your SD-map.
- 📸 Select all photos in a month to make room quickly.
- 🎥 Video files are better to transfer in one or small groups, so as not to overload the clipboard.
- 📂 Create a separate folder on the memory card to avoid mixing old and new pictures.
- 🔄 After the transfer, check that the files have opened in a new location before deleting the originals.
The process of moving can take time depending on the amount of data and the speed of the memory card. At this time, it is not recommended to run heavy games or other resource-intensive applications, so as not to cause the interface to freeze.
☑️ Safe transfer rules
If you use cloud services like Google Photos or Mi Cloud, it’s worth checking sync after transferring files to a map. Sometimes the cloud may not immediately see changes in the file structure and you’ll need to re-index or manually check backup status.
Using a Conductor for Mass Data Movement
File Manager is a better tool for working more nuancedly with the file system and transferring disparate files, which gives you access to the entire folder structure and allows you to see hidden system directories that you can't see in the Gallery, an indispensable tool for advanced users.
In the Explorer interface, switch to the Folders tab, where you'll see the separation between internal memory (usually referred to as Internal Storage or Phone) and an external card (often SD Card), and find folders with heavy content: Telegram downloads, card cache, documents from office applications.
Select the target files with a long press. In the bottom menu, select "Copy" or "Move"; we recommend that you use copying first to verify the integrity of the data, and then delete the originals.
⚠️ Note: Do not move system folders with names like Android, MIUI It can disrupt applications that store their configuration files and databases.
Pay special attention to messenger folders. On WhatsApp and Telegram, media files can lie deep in the directory structure. For example, the path to WhatsApp video often looks like Android/media/com.whatsapp/WhatsApp/Media. By moving the contents of the Media folder, you will free up a huge amount of space.
Transfer and management of applications to SD-map
The issue of migrating the apps themselves to Xiaomi is more difficult than in the early versions of Android. Since Android 6.0, Google has limited this possibility, and Xiaomi in the shell of MIUI often hides or removes the regular feature of porting applications to the map.
The first method is through the standard settings. Go to Settings. → Annexes → All applications. Select the program you want. If the app developer has authorized the transfer, it will have a "Move to" button. SD-Unfortunately, for most of today’s heavy games and social networks, this button is inactive or absent.
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Use the regimen «SD-This will allow the system to automatically suggest the installation of new applications on a flash drive, although not for all programs.
The second method is more radical and requires the use of special utilities such as: App2SD activate hidden functions through the computer and ADB-This allows you to force the apk file and some of the data to be transferred to an external medium, but such applications can be unstable, and when you extract the card, the program will stop running.
It is worth noting that even if you successfully transfer some of the application data (called ODEX and some libraries) will still remain in internal memory. So you should not expect that transferring 10 games will completely free up the built-in drive.
Comparison of storage methods and characteristics table
To better understand what is best to save, consider a comparative table of different types of data and the optimal places to place them on the Xiaomi 7A. Understanding the difference will help to avoid errors and loss of performance.
| Type of data | Recommended seat | Reason for choosing | Risks. |
|---|---|---|---|
| Photos and videos | SD card | It takes up the most space, is rarely used by the system. | Damage to the file during extraction |
| System applications | Internal memory. | High response speed is required | Slowing down the phone |
| Cash games. | SD card (if possible) | Freeing up critical space | Long loading of levels |
| Documents/Office | SD card | Easy access from other devices | No encryption by default |
| Messengers (BD) | Internal memory. | Stability of notifications | Fast-filling memory |
As you can see from the table, the main emphasis should be on the transfer of multimedia content: photos, videos and music make up 80% of user data, system files and databases of messengers are better left on a fast internal drive to ensure the stability of the operating system.
Using a UHS-I or higher memory card minimizes the difference in read speed between internal storage and a flash drive. If you plan to store an application on a map, choosing a speed drive becomes a critical factor.
Cache cleanup and file system maintenance
Regular maintenance of memory is the key to a long life of a smartphone. Even with a memory card, internal storage can become a waste product. MIUI has a powerful cleaning tool built in, but it does not always find all temporary files.
Use the built-in Security → Cleanup app to find remnants of deleted apps, advertising debris and duplicate files, but for deep cleaning, look at the Download and Bluetooth folder, where forgotten APK installation files and accepted documents often accumulate.
⚠️ Warning: Do not use third-party accelerator apps from the Play Market with dubious reputations. They are often the source of advertising themselves and can remove the desired system caches, forcing the phone to recreate them.
It's also useful to check the.Trash or Recycle Bin folder once a month in the Gallery and Explorer. Deleted files are often stored there for another 30 days, taking up space. Cleaning the Recycle Bin is the easiest way to instantly get a few gigabytes of free space.
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Regularly cleaning the cart and download folder frees up more space than transferring system files, and is safer for the stability of the Xiaomi 7A.
If you are actively using streaming services (music, video), check your offline settings. Often apps automatically cache the content you have viewed, clog up memory, set a cache size limit or clear it through the settings of a particular application.