Owners of Xiaomi, Redmi and POCO smartphones often face a lack of built-in storage, especially when installing modern heavy games with high-quality graphics. Built-in memory fills up instantly, and the system begins to warn of a shortage of space, which can lead to unstable device operation. One of the most effective solutions to this problem is using a microSD memory card to store game files and cache.
However, with modern versions of the MIUI and HyperOS shell, data portability has become more difficult due to Android security constraints. You can’t just move an application to the settings menu, but there are proven methods to get around these limitations and get the system to use the external drive to the maximum.
In this guide, we will look at all the current ways, from standard settings to advanced methods using a computer, you will learn how to properly prepare a map, which files can be transferred without losing functionality and why some games still have to be left in internal memory.
Preparation of memory card and file system
Before trying to download or transfer games, you need to make sure that your drive is ready to work.Modern Xiaomi smartphones require the memory card to have a certain speed of writing and reading, otherwise the games will take a long time to load or fly out. UHS-I or UHS-II from trusted manufacturers such as SanDisk or Samsung.
Formatting is an important step. Android is the most stable with the exFAT or FAT32 file system. If your card has been used in other devices before, it is better to format it directly in your smartphone. Go to the Settings menu → About Phone → Storage and select the card you want.
⚠️ Note: Formatting completely removes all data from the card. be sure to back up photos and documents before starting the procedure so as not to lose important information.
Once formatted, the system will suggest using the card as a portable storage or as part of internal memory. For games and applications, the latter option is preferable, but it is not available on all models due to manufacturer policies. If the "Use as internal storage" option is missing, don't worry, we'll look at alternative solutions below.
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Buy memory cards with a volume on 20-30% The file system and the service files take up some space, and the full storage drive runs slower.
Standard method of transfer through Android settings
The easiest way to do this, which works on some Redmi models and older versions of MIUI, is to use an integrated application manager.This method does not require a computer connection or third-party software installation, but the functionality is limited by the wishes of the firmware developers.
To begin, open the Settings section. → Annexes → All applications. Find the game you want to move in the list and click on it. If the system allows for portability, you'll see an active button Move to. SD-Otherwise, the button will be inactive or not.
It’s worth noting that even if you successfully transfer some of the game’s files, they will still remain in internal memory, a technical feature of Android that stores the main executable files in a secure partition, and transfers resources (graphics, sounds) to an external medium.
- 📱 Open the smartphone settings and go to the application section.
- 💾 Select the game from the established list.
- 🔄 Press the movement button if it is active.
- ⏳ Wait until the process is complete without closing the menu.
If the move button is inactive, it means that the game developer has banned the installation on external media, in which case the standard methods are powerless, and you have to resort to more complex manipulation of the file system or access rights.
Use of Adoptable Storage
Adoptable Storage allows Android to perceive the memory card as an extension of the built-in storage, which means that new games and applications will be installed by default on the device. SD-This feature is often hidden at Xiaomi, but it can be activated.
Activation requires access to a hidden engineering test menu or use of special commands via a computer. Some models are helped by entering code ##6484## in the dialer, but on global firmware this path is often closed. USB.
Risks of using Adoptable Storage
Once activated successfully, the card will be formatted in a closed format, and you won't be able to read it on your computer without formatting it again, which is the price of being able to fully use the external drive to install the software.
| Parameter | Portable storage | Internal storage (Adoptable) |
|---|---|---|
| Access to PC | Direct access to files | Formatting required |
| Installation of games | Only manually. | Automatically. |
| Security | Data available to other devices | Encryption tied to a smartphone |
| Speed of operation | Depends on the card. | Optimized by the system |
Using this method turns your card into a system partition. Be careful when extracting: always use the "Safe Retrieval" command in the settings menu to avoid damaging the application database.
Transferring games with ADB and computer
The most versatile and reliable way to work on almost all Xiaomi smartphones without root rights is to use the Android debugging bridge (ADB), which allows you to force the default mount point change for all new applications.
To start, you need to activate the developer mode. Go to Settings → About Phone and quickly click 7 times on the MIUI Version or OS Version. After the notification appears, go to Additional → For Developers and turn on Debugging over USB.
☑️ Preparation for work with ADB
Next, download the Platform Tools package to your computer. Connect your smartphone with a cable and open the command line in the folder with ADB. Enter the adb device command to make sure that the device is visible. If a permission window appears on the phone screen, click "Always Allow".
adb shell pm set-install-location 2This command tells the system that by default all new applications should be installed on an external drive (value 2). A value of 0 returns the installation to internal memory, and 1 leaves the system to choose. After completing the command, all games downloaded from Google Play or other sources will try to fit into the game. SD-map.
⚠️ Warning: Command is valid until the first device restarts or the card is turned off. To fix the result on some firmware, you need to repeat the command after each phone turn on.
Solving Cache and Obb Data Problems
Even with a successful body transfer, heavy game resources often remain deadweight in the internal memory in the Android/obb folder. This is especially true for giants such as Genshin Impact, PUBG Mobile or Call of Duty.
To make room, you can try moving obb and data folders manually, and to do this, create a folder structure on the memory card that is identical to the internal one: Android/obb/com.name.game. Then move the contents of the corresponding folders from the internal memory to the map.
However, the current versions of Android (11, 12, 13 and later) strictly restrict access to these directories. The standard file manager may not see the contents of the Android folder, in which case you will need a third-party file manager with extended rights, such as Total Commander or MT Manager.
- 📂 Create a copy of the obb folder on the memory card.
- 🗑️ Remove the original from internal memory (pre-backup).
- 🔗 Use the “Create a Link” function or mount the folder again.
- 🎮 Start the game and check the resource loading.
If a post-transfer game requires you to download data again, then the direct file transfer method in your version of the system has not worked, due to changes in the Scoped Storage access policy.
Features of working with heavy games on SD
Using a memory card for gaming has its technical limitations: the speed of randomly reading small files on microSD cards is much lower than that of built-in UFS 2.1/3.1 memory. This can lead to increased load times for levels and micro-freezes in dynamic scenes.
This is especially true in open worlds where textures are loaded on the fly. If you're an avid gamer playing competitive shooters, critical to reaction speed, it's best to leave these games on the internal drive and move single projects or less demanding titles to the map.
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The Best Strategy: Keep It 2-3 Main competitive games on internal memory, and the rest of the game archive and heavy RPG keep SD-map.
Heat is also important, and if you're working with a memory card, especially if it's located next to the processor, the temperature of the case can rise, and a good heat sink and a good case will help mitigate this effect.
Remember to check the status of the card periodically. Flash file systems tend to fragment, and once every couple of months it is recommended to defragment (if the file manager supports) or simply back up the data and format the card again.