Transfer applications to memory card on Xiaomi Redmi 9A

Owners of budget smartphones like the Xiaomi Redmi 9A often face a critical shortage of built-in storage: In basic versions of the device, only 32 or 64 gigabytes are available, of which the system occupies a significant part. Internal memory is filled instantly after installing a pair of social networks and a navigator, which leads to a slowdown of the gadget and the inability to take new pictures.

The only sensible way to do this is to use an external drive, a microSD card that can hold hundreds of gigabytes of data, unloading the main partition, but just inserting a flash drive is not enough, you need to configure the MIUI system correctly so that the applications and media files are stored there.

In this guide, we will take a look at all available storage optimization methods, learn how to force installed programs to move, change the default save path, and what are the hidden risks when working with external shell drives from Xiaomi.

Preparation of memory card and compatibility check

Before you start transferring data, you need to make sure the quality and compatibility of the drive used. Xiaomi Redmi 9A supports microSDHC and microSDXC cards up to 512 GB (officially), although in practice, often work and 1 TB. Write speed directly affects the performance of applications, so save on the class speed is not worth it.

It is recommended to choose cards marked Class 10, UHS-I or higher. Slow drives can cause "freeze" interface and long loads of heavy programs. Before installing in the slot of the phone, it is advisable to format the card on a computer in the FAT32 or exFAT file system, although Android will offer to do this automatically.

⚠️ Note: Formatting a memory card completely destroys all data on it. Be sure to back up important files to your computer before starting the procedure.

Once the SIM card and the drive are physically installed in the tray, the system will notify you of the discovery of a new device. At this stage, it is important to choose the correct mode of operation. For maximum user convenience, MIUI suggests using the card as a portable storage, but additional actions will be required to transfer applications.

Basic setting SD-card MIUI

The standard Android algorithm on Xiaomi smartphones involves splitting data streams. Photos and music can be easily redirected, but the system applications by default remain in the internal buffer. The first step is to activate the map through the settings menu.

You need to go to Settings → About Phone → Storage, and you'll see a list of connected drives, and if the card is new, the system will prompt you to format it, and this process creates the necessary file structure to work properly with media files and documents.

• 📱 Insert the card into the phone turned off or through the extract menu.
• ⚙️ Wait for notification and go to the storage settings.
• 💾 Select the option of formatting (cleaning) the drive.
• ✅ Confirm the action and wait for the process to be completed.

Once formatted, a new partition will appear in the File Manager, and you can now manually transfer files, but to automate the process, consider the deeper integration methods available in Android 10/11, on which Redmi 9A is based.

Method of transfer through application settings

The safest way to do this, without root rights or debugging, is to use the standard portability functions, which, unfortunately, MIUI developers often hide the move button if the application doesn't officially support it, but it's the first thing to check if it does.

Go to Settings. → Annexes → All applications. Select the desired program from the list (for example, a heavy game or social network). If the developer has made this option, the Change or Move button will be active in the storage management menu. SD.

If the button is inactive or absent, it means that the application is rigidly tied to the system partition. Attempts to circumvent this restriction by standard means are impossible, but there are workarounds through changing the developer's settings or using the system partition. ADB-The teams that will be discussed below.

Use of Adoptable Storage

Adoptable Storage technology allows the system to perceive the external card as part of the internal drive, which solves the problem of space shortage dramatically: the phone “thinks it has one large disk. On the Xiaomi Redmi 9A, this feature is often hidden by the manufacturer, but it can be activated.

It requires a computer and minimal command line knowledge, and the method is to send a dedicated command via USB debugging, which forces Android to format the card into a secure format, encrypting data and making the card unreadable on other devices without unlocking it.

adb shell sm partition public:169478,32 mixed 50

Once you do that, the phone will reboot, and you'll have a single memory storage space, and all new apps will be installed on the card by default, unless you say otherwise, which is the most efficient method for low-storage models.

⚠️ Note: After activating Adoptable Storage, it will be impossible to remove the card without losing data and resetting the phone settings.

Changing the save path in the camera and browser

Even if apps stay inside, media files take up the lion's share of the space. Xiaomi Redmi 9A allows you to flexibly configure save paths for most embedded and third-party utilities. This frees up precious gigabytes for the operating system to run.

In a standard camera, the settings are in the settings menu (cogs). SD-The card must be activated. Similar actions are required in browsers (Chrome, Yandex), instant messengers (Telegram, WhatsApp) and voice recorder.

• 📸 Camera: Settings → Save it on. SD-map (On).
• 🌐 Browser: Settings → Downloaded files → The way to preserve.
• 💬 Telegram: Settings → Data and memory → The path to files.
• 🎵 Settings: Settings → Conservation → Memory map.

Regularly checking these parameters ensures that new photos and uploaded documents do not clog the system partition, especially for messengers who tend to cache a huge number of media files.

Table of comparison of methods of memory optimization

To make it easier to find a way to solve the space shortage problem, we have systematized the basic methods in a table, each with its own advantages and disadvantages, depending on your goals and technical skills.

As you can see from the comparison, Adoptable Storage is the best, but it requires caution. Manual file management is the safest, but time-consuming option. For most Redmi 9A users, a combined approach would be the best.

Typical errors and troubleshooting

In the process of optimization, users often experience read errors or sudden disappearance of files. A common reason is the use of poor-quality memory cards or a violation of contact in the slot. Redmi 9A is sensitive to connection quality, so cheap Chinese cards can work unstable.

Another problem is desynchronizing the media database, and after transferring large amounts of data, the gallery can be updated for a long time or show empty previews, whether it is solved by restarting the device or cleaning the Media scanner app cache in the settings.

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Use only memory cards from well-known brands (Samsung, SanDisk, Kingston). Cheap counterparts often have real capacity 10 times less than claimed, which leads to data loss.

If your phone stopped seeing the card after trying to port the apps, try formatting it again through the Settings → Storage menu. In rare cases, you need to completely reset your phone’s settings (Wipe Data), but this is a last resort.

⚠️ Note: Do not remove the memory card while writing data or running applications.This can cause file system damage and loss of information without the possibility of recovery.

Frequently Asked Questions (FAQ)

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The best strategy for Redmi 9A is to transfer all media files (photos, videos, music) and documents to the map, leaving only active applications in the internal memory for maximum speed.