Owners of budget smartphones like the Xiaomi Redmi 7A often face critical shortages of space. 16 or 32GB of built-in storage is catastrophically scarce for today's heavy gaming and multimedia. MIUI severely limits data portability, raising many questions for users wanting to unload the main drive.
Moving applications to an external drive is not just a convenience, but a necessity for a stable device operation. When the internal memory is 95-99% full, the phone starts to slow down and new programs simply refuse to install. In this article, we will discuss all the available ways to expand functionality without obtaining root rights, which can be dangerous for inexperienced users.
It should be noted that standard means of the system can not be transferred, Android and the shell MIUI have strict security restrictions that prohibit the movement of system components, but there are proven methods that allow you to use the microSD card as a full extension of internal memory for user content and some programs.
Preparation of memory card and smartphone for work
A poor or damaged memory card can cause data loss or freeze on a Redmi 7A. It is recommended to use Class 10 or higher cards, as read and write speeds directly affect the speed of applications.
Insert a microSD card into your device's slot. The system automatically prompts you to format the drive. You agree to format, but remember: all the data on the card will be deleted. If there are important files on the card, pre-copy them to the computer. After formatting, the system will assign the card an alphabetical designation or path in the file system.
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Use only high-quality memory cards from well-known brands (SanDisk, Samsung, Kingston). Cheap cards from marketplaces often have understated real capacity and low speed, which will lead to lags in games.
Check if the phone sees the external drive correctly. Go to the settings menu and find the storage section. If the map shows the correct volume, you can proceed to set up the system. Ignoring this step can lead to errors when you try to write data.
Default Memory setting in MIUI
The first step to optimizing space is to change the recording priorities, and Xiaomi defaults to storing all photos, videos and downloads to internal memory, which quickly overflows it, and to change the behavior of the system, you need to go to the appropriate storage settings menu.
Find Memory or Storage in your device settings, and it should be "Use by default" or "Save in." Select your memory card, and then all new files from the camera, voice recorder, and browser will automatically be saved to an external medium, freeing up precious megabytes of internal storage.
⚠️ Note: When you change the default media, the old files do not move automatically. You will have to manually transfer the already accumulated photos and videos through the file manager.
This setting doesn’t carry the applications themselves, but creates conditions where they take up less space. The cache of many programs, such as messengers and social networks, can also start writing to an external drive if the application supports system settings for the path to data, which is especially true for the Redmi 7A with its limited volume.
Use of the function "Inner memory" (Adoptable Storage)
Some versions of Android and the manufacturers’ shells have a hidden feature that allows you to combine an external card with internal storage. However, in MIUI this feature is often blocked software, you can check its availability through your computer using the ADB command, but for most users, a simpler, although less effective method through settings is available.
Try to go to the storage settings, select yours. SD-If you have a menu item called "Format as internal memory" (or "Internal Storage"), you're in luck. This action completely rewrites the structure of the map, making it an integral part of the system.
adb shell pm set-install-location 2If there is no standard menu, you can try activating the hidden developer mode. Turn on USB debugging, connect the phone to your PC and type a command through the ADB console. After you execute the command, restart the device. Now, when you install new applications, the system can suggest you choose the installation site.
| Parameter | External drive | Internal memory. |
|---|---|---|
| Reading speed | Up to 90MB/s | Up to 400+MB/s |
| Reliability | Medium | Tall. |
| Impact on the battery | Elevated. | Standard. |
| Access to PC | No restrictions. | Only through MTP |
Manual transfer of application data
Since system portability doesn’t work for all programs, it often requires manual operation, and many applications, especially games and navigators, allow you to transfer your cache files (OBB and Data folders) to a memory card, which frees up a lot of space, leaving only a lightweight executable file on the internal drive.
To do this, use the built-in Explorer or a third-party Explorer, such as Total Commander. Android/data or Android/obb Copy the folder of the desired application (for example, com.yandex.maps) into a similar directory on the SD-map.
☑️ Manual transfer algorithm
Once you move the files, run the application. It can take a long time to check the files or re-download some of the data. Make sure the program is working correctly. If you have errors, return the files back, which means that this application does not support cache on an external medium in your version of MIUI.
Using third-party utilities to move
When standard tools are not enough, specialized silhouettes come to the rescue, the App2SD app or its analogs allow you to control the movement of data more flexibly, they scan installed programs and show which ones can theoretically be moved.
Install the tool you select from Google Play and give it the permissions you need. It will show you a list of apps divided into categories: On a map, On a phone, and You can move it. By clicking on the move button, you initiate a system-wide migration process.
⚠️ Warning: Third-party programs cannot bypass Android’s system security restrictions. If the move button is inactive, the app developer has banned its installation on an external media.
Some utilities also offer a “Link2SD” feature that requires root rights.This method allows you to create symbolic links by tricking the system into thinking that the files are inside, even though they are physically located on the map. For Redmi 7A, this can be risky, since it requires unlocking the bootloader.
Risks of using third-party managers
Problems and limitations of transfer to Redmi 7A
Despite all the efforts, users face a number of limitations, the main problem is speed, the memory card, even fast, is always slower than the built-in flash memory, which leads to longer loading of games and slowing down the interface when accessing data.
The second important aspect is stability: if the memory card fails or just pops out of the connector while it is running, the application whose data is on it will cease to function, the system may produce errors "File not found" or require reinstallation of the program.
In addition, some types of content, such as desktop widgets or live wallpaper, may stop working if they are moved to the desktop. SD-WhatsApp and Telegram may also incorrectly save media files if they change standard paths without their internal consent.
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Only transfer heavy games and media files to the map, system applications and frequently used messengers are best left in internal memory for performance.