Owners of budget smartphones such as Xiaomi Redmi 7A often face a critical shortage of internal memory. Android operating system and preinstalled services occupy a significant part of the drive, leaving the user with minimal space to install new programs. When free space runs out, the device starts to run slower, and notifications of memory shortages appear more often, interfering with normal operation of the gadget.
Fortunately, the Redmi 7A supports microSD card installation, which allows you to expand storage to 256 GB. However, standard system tools often hide the possibility of full data transfer, forcing the user to look for workarounds. In this article, we will discuss proven methods of freeing up space and moving files that will help extend the life of your smartphone.
Optimizing disk space is not just about removing old photos, but also managing app cache properly. Many users don't know that even without root rights, you can significantly relieve the load on the system partition. Below are detailed steps that you need to follow to achieve the desired result.
Preparation of memory card and smartphone for work
Before you start transferring data, you need to properly prepare the external drive. Using a poor-quality or damaged card can lead to loss of information and system freeze. Make sure that your microSD card has a speed class of at least 10, as this directly affects the speed of the applications installed on it.
Insert the card in the slot located in the tray for SIM-If you turn on your smartphone, the system must automatically identify the new media. If that doesn't happen, go to the settings menu and find the partition responsible for managing the storage.
The system will suggest formatting the map, and it's important to choose the right formatting type, so you can use the card as a portable storage device or as part of internal memory, and for our purposes, understanding the difference between these modes is the most important thing.
⚠️ Note: Formatting a memory card will completely delete all the data that was on it. Pre-copy important photos and documents to your computer or cloud storage to avoid their irretrievable loss.
The formatting process can take a few minutes, so don't pull the card out or turn off the phone, and when you're done, the system will notify you that the drive is ready to go, and then you can move on to setting up storage options.
Setting up SD-maps as internal storage
One of the most effective features of Android is the ability to combine an external card with internal memory, a process called adaptive storage. By enabling this option, you will allow the system to automatically install new applications on the device. SD-map, bypassing the limitations of the built-in drive.
To activate the mode, go to Settings → Memory. Click on your memory card name and select Memory Settings. The menu that opens will prompt you to select the type of use. Select Use as internal storage.
The system will warn you that the card will be encrypted and cannot be read on other devices without re-authorizing, a security measure that protects your data from theft, and once confirmed, the data migration process will begin, which can take a long time.
☑️ Pre-formatting verification
Once the migration is complete, some of the system files and application cache will move to a new medium, which will free up precious megabytes in the system partition, but it is worth remembering that the card’s speed may be lower than the speed of the embedded flash memory.
⚠️ Note: Not all applications support porting to an external drive even in internal storage mode. Banking programs and system services often remain on the main drive for security and stability.
Manual transfer of installed applications
If you don't automatically move or you're using the card in portable storage mode, you can try to manually migrate applications, which isn't available for all programs, but makes room for the heaviest games and instant messengers.
Open the Settings menu → Applications → Application Management. In the list, find the program you want to move. Click on it to open the app's details.
In the menu that opens, look for the memory button. If the app supports portability, the "Change" or "Move to" button will be active. SD-Press it and wait until the process is complete. If the button is missing or inactive, the developer has banned the movement.
Why is the transfer button grey?
It is worth noting that the porting of an application moves only its installation files (APKs). User data, such as game saves, messenger cache and downloaded files, often remain in internal memory.
Check the installed program list regularly. Over time, the number of applications that can be moved may change after system updates. Watch for updates to MIUI firmware, as new versions of the memory algorithms can be improved.
Cleaning cache and junk files
Even after the application is transferred, internal memory can quickly fill up with temporary files. Application cache is data that is stored to speed up the program, but over time it grows to gigabytes, taking up useful space.
The built-in Cleanup tool in the MIUI shell allows you to quickly delete temporary files. Launch the Security app and select Cleanup. The system will analyze the storage and suggest removing debris, remnants of deleted applications and large files.
To clean it up, you can use manual memory management. Go to Settings → Memory → Memory of the device. Here you will see detailed statistics: how much space is occupied by apps, images, videos, etc. Click on the category "Apps" to sort them by size.
Pay special attention to messengers like Telegram or WhatsApp, which store all received media files in the memory of the phone, and in the settings of these applications, you can change the way you save files on the phone. SD-map, which will save a lot of space.
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Use the Deep Clean feature in the Security app once a week.It finds duplicate photos, old screenshots and unused ones. APK-Installation files that often forget to delete.
Use of Third-Party File Managers
The standard file explorer doesn’t always have enough functionality for deep storage analysis. Third-party file managers like Total Commander or FX File Explorer provide advanced data management capabilities on the Xiaomi Redmi 7A.
These tools can manually move data folders, such as the DCIM/Camera folder with photos, you can transfer to a map, leave a symbolic link in the internal memory (root rights are required), or simply change the way you save in the camera settings.
File managers also allow you to find “hidden” large files that are not displayed in the standard gallery, which can be offline maps of navigators, downloaded series in streaming services or backups of the system.
When working with system folders, be extremely careful. Deleting or moving important system files can lead to unstable device operation. Always check what exactly you are moving, especially if the file has a.xml extension or is located at the root of the system.
Possible problems and ways to solve them
Users may experience a variety of errors during data transfer, most often the system reports that the application cannot be moved or the memory card is damaged, and understanding the causes of these errors will help to quickly eliminate them.
If the memory card is identified as corrupt, try formatting it on your computer in the FAT32 or exFAT file system. Then insert it back into your phone and repeat the formatting procedure through the smartphone menu.
In some cases, applications stop launching or crashing after the transfer, which may indicate a slow card read speed, so it’s better to leave heavy apps on the internal memory, and only transfer photos, videos and music to the map.
| Type of problem | Possible cause | Decision |
|---|---|---|
| Application not portable | Developer ban | Use the "Internal Storage" mode |
| Map not determined | Poor contact or format | Wipe contacts, reformat |
| The speed of work has decreased. | Low speed class SD | Replace the card with Class 10/U3 |
| Errors in starting games | Cache file damage | Reinstall the application again |
Remember that the Xiaomi Redmi 7A is an entry-level device, and its processor may not be able to quickly encrypt data on slow memory cards. The best solution is balance: the system and heavy applications are inside, media files are outside.
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The most reliable way to avoid memory problems is to regularly clean the messenger cache and store photos / videos in the cloud services, not on the device.