Owners of budget smartphones like the Xiaomi Redmi 5A often face a critical shortage of internal space: built-in 16 or 32 gigabytes of memory quickly fill up with system files, messenger cache and photos, which leads to a slowdown in the device. Android system and the MIUI shell require free space for proper functioning, and its absence causes interface lags and forced shutdown of programs.
Fortunately, the design of this smartphone allows for the expansion of the data storage, so using a microSD card, you can not only store media files, but also, if you set up the right way, transfer some of the user applications, so you can install more of the desired software without deleting old files.
In this article, we will take a closer look at all the available ways to optimize disk space, learn how to turn an external card into internal memory, what are the limitations, and how to avoid the typical errors of data migration.
Preparation of the storage device and compatibility check
Before you start transferring data, you need to make sure that your memory card meets the requirements of the system. For stable operation, it is recommended to use drives ranging from 16 to 128 gigabytes with a speed class at least 10 Class. Slow cards can cause delays when you start programs that have been moved to an external medium.
Put the card in a slot located at the end of the device. Once the system determines, go to the settings menu. You need to find the section responsible for managing the storage to do the initial diagnosis and formatting.
⚠️ Attention: The formatting process will completely destroy all data on the map. Copy important photos and documents to your computer or cloud storage in advance.
The new memory card will be notified on the screen, and the system will offer two uses: as a portable storage device or as part of internal memory, and for our purpose of porting applications, we need to choose the second option, which is technically called Adoptable Storage.
If you don't have an automatic offer, manually follow the steps through the settings. Find Memory in the main menu and select your card from the list of available devices. Click on Clear or Format to get your file system ready for Android.
The preparation process can take a few minutes. SIM-tray and monitor battery level to avoid damage to file structure.
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Use quality memory cards from well-known brands like SanDisk or Samsung. Cheap counterparts can fail after several rewriting cycles.
Instructions for formatting into internal memory
Once you’ve logged into the memory management menu, select your card and click on the three dots in the top right corner of the screen. In the drop-down menu, select the option “Internal Storage” and the system will alert you that the card will be formatted and encrypted.
Encryption is an important security step, which means that the memory card will be tied to your Xiaomi Redmi 5A. You can’t just insert it into another phone and read the data without re-formatting it.
The formatting process will start. The progress bar will show the status of the operation, and don't interrupt the process and turn off the smartphone screen so as not to disrupt the partition structure.
☑️ Pre-formatting verification
Once the formatting is complete, the system will suggest migrating the data you already have (photos, music) to a new drive, and accept that offer to free up the built-in space for system needs.
Configure application portability in MIUI
Unlike pure Android, the MIUI shell installed on the Redmi 5A has its own memory management features. Even after formatting the card into internal memory, automatic transfer of all applications may not happen instantly.
To start, go to Settings and find Apps. Select Application Management. This shows the full list of installed software. Scroll through the list and find the programs that take up the most space.
Click on the name of the application. If the program supports portability, you'll see an active memory or storage button, and if you click on it, you'll be taken to the data management menu of the particular application.
In this menu, look for the Move button or the Modify button. If the system allows you to move the application, the button will be active. Press it and confirm the action. The copying process will take some time, depending on the size of the application.
Not all applications can be moved completely, and some system components and programs that are critical to security (such as banking apps or Google Pay) must remain in the device’s internal memory.
⚠️ Warning: After the app is moved, its icon may disappear from the desktop. Don't worry, it will remain in the general menu of all applications ("Programs»).
If the transfer button is inactive (gray), then the application developer has forbidden its installation on an external drive, in which case only root rights can help, but obtaining them deprives of guarantees and can disrupt the work of banking services.
Using Developer Functions for Forced Transfer
There is a hidden method that allows you to expand the system and allow you to transfer more applications, this method activates a hidden flag in the Android system, forcing the system to consider the external card to be a priority for installing new software.
To use this method, you first need to activate the developer menu. Go to Settings» → «About the phone. Find the line "version." MIUI» And press it fast. 7-10 Once in a row, until you receive a notification that you have become a developer.
Now go back to the main settings menu and go to Advanced Settings → Developer. In the long list of options, find Force allow apps on external. Change the value to External Drive.
Settings → For developers → Preferred installation location → External driveAfter changing this setting, it is recommended to restart the smartphone. Now, when installing new applications from Google Play or Mi GetApps, the system will by default offer installation to the memory card, if the program architecture allows.
Risks of using the developer mode
This method is especially effective for older versions of Android that are installed on the Redmi 5A. It allows you to bypass some of the restrictions imposed by the manufacturer on budget models.
Analysis of the occupied space and cleaning the cache
Even after transferring applications, memory can fill up with junk files. Periodic cache cleaning helps keep the system running fast. Cache is a temporary file that speeds up applications, but can inflate to giant sizes over time.
To analyze disk space, use the built-in Security or Cleanup app to show which files occupy the most space, and it often turns out that the bulk of the data is not the apps themselves, but their data (photos on WhatsApp, uploaded files on Telegram).
Consider the memory allocation in a typical Xiaomi Redmi 5A usage scenario:
| Type of data | Default location | Recommended action | Impact on speed |
|---|---|---|---|
| System files | Internal memory. | Don't touch it. | Critically. |
| Annexes (Social) | Internal/SD | Transfer data | Average. |
| Photos and videos | Internal/SD | Move it completely | Low. |
| Navigation cache | Internal | Regular cleaning | High. |
Notice the "Apps" line: Bringing heavy gaming and social media to a memory card may slightly increase their launch time, but free up precious gigabytes of the main partition.
Use the Deep Clean feature in a standard security application.It finds duplicate files, old APK installation packages, and unused applications that can be safely removed.
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Regularly cleaning the messenger cache frees up more space than transferring the apps themselves.
Typical problems and ways to solve them
Users may experience various errors during operation, such as when the application is transferred, it may stop opening or not work correctly, often due to a slow read speed of the memory card or a file system corruption.
If the program crashes immediately after launch, try moving it back to internal memory. To do this, go to the application settings and click "Move to internal memory." If the problem disappears, then the memory card is unstable or has a low speed class.
Another common problem is the disappearance of widgets of portable applications from the desktop. Widgets placed on the memory card may not load at the start of the system if the card is initialized later than the launcher starts.
It is also possible that after updating the MIUI system, the memory settings are reset, in which case the procedure for formatting the card into internal memory will have to be repeated again, having previously saved the data.
⚠️ Warning: If the memory card stops being defined or requires constant formatting, it may have failed.Replace the drive to avoid data loss.
If you have any installation errors ("App not installed"), check if the card is full, and leave at least 10-15% free space for the file system and write processes to function properly.