Modern mobile games like Genshin Impact, Call of Duty Mobile or PUBG take up a huge amount of space on a smartphone drive. Owners of Xiaomi, Redmi and Poco devices with a small amount of internal memory often face a critical shortage of gigabytes, which leads to the inability to install new applications or system updates. Standard garbage cleaning procedure helps only temporarily, as heavy data files continue to grow.
Fortunately, the Android architecture allows for flexible file stream management, and the MIUI shell or the new HyperOS provides tools to optimize storage. Cache transfer to an external drive is not just about freeing up space, but also a way to extend the life of the main memory by reducing the number of rewrites. In this article, we will discuss in detail how to safely migrate data.
It is important to understand that not all applications support native transfer to the SD-This map is due to security restrictions imposed on modern versions of Android, but there are workarounds that involve the use of special commands and system utilities.
Preparation of the file system and memory card
Before you start manipulating game files, you need to make sure that the external drive is ready. The speed of reading and writing a map directly affects the loading times of levels and textures in games. Using a slow Class 4 or Class 6 card can lead to friezes and long loads, so it is recommended to use the UHS-I or UHS-II standard.
File system also plays a key role in compatibility. Xiaomi's Android devices work best with formatting in exFAT or FAT32. If your card is formatted in NTFS, the system may not see it or require third-party drivers. The formatting process will destroy all data, so back up important files in advance.
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Use memory cards up to 256GB for maximum compatibility. Larger ones (512GB, 1TB) can run unstable on older Redmi and Mi smartphones.
After the physical installation SIM-In the game, you can choose the mode of use, and in order to transfer the game cache, you need to select Portable Storage mode. Internal Storage mode, although it allows you to integrate the card into the system, often works unstable on firmware. MIUI and may lead to application launch errors.
- 📁 Format the card to the exFAT file system via your computer or smartphone menu.
- ⚡ Make sure that the card write speed is at least 90MB/s for heavy gaming.
- 📱 Insert the card into the off smartphone, then turn on the device for correct determination.
- 🔒 Select Portable Storage Mode in Notification or Settings.
Analysis of space and search for heavy files
For effective memory management, you need to know exactly where the data of a particular game is stored. In Android, the folder structure is strictly regulated, and the application cache is usually located along the path /Android/data/ or /Android/obb/. On new versions of Android, access to these folders is limited, but file managers from Xiaomi or specialized utilities allow you to bypass these restrictions.
The standard Explorer app in MIUI has a built-in memory analyzer that visualizes storage (occupancy) by showing the heaviest applications. Notice the Other section, which often hides the remnants of remote games or messenger cache that can be safely moved or deleted.
Now, when you analyze it, you have to consider that some games divide data into several parts, and the main body of the application takes up a little bit, but the additional resources (maps, voices, textures) can weigh tens of gigabytes, and these are the files that we're going to be carrying. Use the size sorting function to identify the leaders in the consumption of space.
| Type of data | Default location | Possibility of transfer | Impact on speed |
|---|---|---|---|
| APK file | System section | Only Root. | Minimum |
| Cash OBB | /Android/obb/ | High (via ADB/Conductor) | High (depending on the map) |
| Data data | /Android/data/ | Medium (requires access rights) | Average. |
| Conservation | Internal DB/Cloud | Low (risk of loss) | Low. |
Native data transfer via MIUI settings
Shell MIUI provides basic functionality for moving media files and some application data to SD-This is the safest method, because it doesn't require you to connect to a computer or use complex commands, but it doesn't work for all games, but only for those that have been allowed to be moved.
To use this feature, go to the settings menu and find the Apps section. Here you need to select All Apps, find the desired game in the list and click on Memory. If the developer has provided this option, click Change or Move to SD-The map will be active.
⚠️ Note: When moving an application by system means, some widgets or fast-loading features may temporarily stop working until the system is fully adapted to the new file location.
If the transfer button is gray or missing, it means that the application is tightly tied to internal memory, in which case native methods will not help, and you will have to resort to manually copying folders or using the command line.
- 📂 Go to Settings. → Annexes → Application management.
- 🎮 Find the game in the list and select “Memory».
- 🔄 Click "Change" and select SD-card if the option is available.
- ⏳ Wait for the copying process to end without turning off the screen.
Manual movement of OBB and Data folders
The most effective method for games that do not support automatic transfer is to manually move folders with cache.Most heavy games store their resources in the folder /Android/obb/com.nazvanie.igry/. By moving this folder to the memory card, you will free up space, but the game can stop seeing files unless you create a symbolic link or use special scripts.
However, there is a simpler approach for some file managers, such as: MT Manager or ZArchiver. They can work with paths to files. You can copy the entire obb folder to the root. SD-maps, creating a similar structure /Android/obb/. After that, in the game itself, you can often specify the path to the data in the settings, although this is not supported by all projects.