Mobile gaming has reached such a level that modern projects require gigabytes of free space. Users often encounter a situation where the internal memory of the smartphone is full and it is impossible to download a new game. This leads to the logical question of where exactly additional data files, known as caches, should be installed.
The correct placement of these files affects not only the performance of the device, but also the stability of the application itself. Errors in installation paths often lead to crashes or the inability to launch the app even after successfully downloading the APK file. Let's understand the structure of the file system Android and determine the optimal storage locations.
Understanding the structure of game files on Android
Any heavy game consists of two main components: the installation package and additional data. The installation file has the extension .apk and contains the executable code of the application, as well as basic resources. However, for full operation, most projects require additional volumes of graphics, sounds and levels, which are stored separately.
This additional data is called a cache or files OBB (Opaque Binary Blob). Without them, the game will either not start or will show a black screen asking you to download files. The Android system strictly regulates where these files can be placed to ensure security and data integrity.
In older versions of the operating system there was more freedom of action, but modern releases Android 11, Android 12 and above have tightened the rules for accessing the file system. Now applications are isolated from each other, which imposes certain restrictions on where the user can manually copy data.
⚠️ Attention: An attempt to place cache files in arbitrary folders (for example, just in the root of a memory card) will result in the game simply not seeing them. Maintain a strict directory hierarchy.
Why is the cache separate from the APK?
Separating files allows you to update game resources without reinstalling the entire application. This saves traffic and user time when new patches are released.
Standard ways to install the cache in internal memory
By default, the system suggests installing all data in the internal storage of the device. This is the most reliable option as the read speed of built-in flash memory is usually faster than microSD cards. There are two main types of paths that the system uses to place game files.
The first type is a public directory, which was previously used most often. The path looks like this: /sdcard/Android/obb/. This is where folders with the name of the game package are placed, for example com.rockstargames.gtasa. Inside this folder there are files with the extension .obb.
The second type of path is intended for private application data and is located in the directory /sdcard/Android/data/. The game can record logs, temporary files and user settings. For some projects, it is critical to have files in this structure, and not in the obb folder.
- 📁 The folder
Android/obbis intended for the main game resource files. - 📁 The folder
Android/datais used for specific data of a particular application. - 📁 Root memory often does not support direct launch of heavy games without the correct structure.
If you install the game through the official store Google Play, the system automatically creates the necessary directories and places the files there. Problems arise mainly when manually installing APK and cache from third-party sources.
Maintaining the exact path to the obb folder is a critical condition for running 99% of heavy games on Android.
Transferring the cache to a memory card: possibilities and limitations
The desire to free up internal memory pushes users to transfer the cache to an external card microSD This is theoretically possible, but in practice modern versions of Android introduce serious limitations. Starting from Android 11, access to the folder Android/obb on an external card is often blocked by third-party file managers.
Previously, it was possible to format a memory card as internal storage (Adoptable Storage). In this case, the system encrypted the card and merged it with the main memory. However, many smartphone manufacturers, such as Samsung and Xiaomi, have removed this function from their skins, leaving the card only as a portable storage device.
If your version of Android allows writing to a folder Android/obb on an external card, you can manually move files there. To do this, you need to create a similar folder structure on the memory card. If the system denies access, you will need a special file manager with access rights to system folders.
⚠️ Attention: Low-class memory cards (Class 4 or Class 6) may cause stuttering in games due to the low speed of reading random blocks of data.
Instructions for manually installing the cache
Manual installation is required when you download the game as an APK file and an archive with a cache separately. This process requires care and consistency of actions. An error at any stage can lead to the game requiring the files to be downloaded upon startup.
First, you need to install the APK file itself, but not start the game. After installation, create the desired folder structure on your device. Then unzip the cache archive (usually a ZIP or RAR format) into the appropriate directory.
- 🔍 Download the APK file and cache files from a trusted source.
- 📲 Install the APK, but do not open the application.
- 📂 Unpack the cache archive into folder
Android/obb/package_name. - ▶️ Launch the game and check the functionality.
☑️ Checking the installation correctly
To navigate the file system, it is recommended to use advanced file managers, such as ZArchiver or FX File Explorer. Standard Explorer may not display hidden files or may not have write permissions to system folders.
Correct path: /storage/emulated/0/Android/obb/com.game.name/main.123.com.game.name.obbProblems with accessing the Android folder in new versions
Users who have updated to Android 11 and higher often encounter an access error when trying to copy files to the folder Android. The system displays a message stating that access is denied or the folder is empty. This is due to the Scoped Storage policy, which limits application access to shared storage.
To bypass this restriction, you can grant the file manager special access through the system settings. Go to the section Settings → Applications → Special access → Access to all files and activate the switch for your file manager.
An alternative solution is to connect the smartphone to the computer via a USB cable. In file transfer mode (MTP), the computer sees the memory structure differently, and you can copy cache files directly through Windows Explorer or macOS without the restrictions of the mobile interface.
⚠️ Attention: Settings interfaces may differ depending on the manufacturer's shell (MIUI, OneUI, ColorOS). If you do not find an access point, check the information in the official documentation of your model.
When copying large cache files via USB, disable the antivirus on your PC, as it can slow down the transfer process or block .obb files.
Comparison table for cache storage methods
The choice of storage location depends on your priorities: operating speed or saving internal memory. Below is a comparative description of the main methods for storing game data.
| Storage method | Loading speed | Free space | Setting complexity |
|---|---|---|---|
| Internal memory | High | Minimum | Automatic |
| Memory card (Standard) | Medium/Low | Maximum | High |
| Internal memory (Root) | High | Minimum | Average |
| Hybrid storage | Depends on the file | Average | Very high |
Using internal memory guarantees the best FPS and minimum level loading time. Transferring to a memory card is only advisable if the internal storage is physically full and nothing can be deleted.
The presence of root access expands the possibilities, allowing you to transfer even those applications that by default do not support installation on an SD card. However, this requires deep knowledge and carries security risks.
What are symbolic links?
This is a special method that allows you to trick the system into thinking that the files are in the internal memory, although they are physically on the card. Requires Root access.
Frequent errors and ways to solve them
Even if you follow all the instructions, problems may arise with startup. The most common error is a mismatch between the cache version and the APK version. If you updated the game but left the old cache, the application may crash immediately after the logo appears.
An error in the folder name is also common. The name of the cache folder must exactly match the name of the game package. You can find out the exact name of the package in the application settings or through special utilities like App Inspector.
If the game requires downloading data, despite the presence of files, check the access rights. Perhaps the file manager did not unpack the archive correctly, and the files ended up nested in an extra wrapper folder inside the obb directory.
- ❌ Mismatch between APK and cache versions leads to crashes.
- ❌ Extra nesting of folders breaks the path to the files.
- ❌ Lack of write rights blocks the installation.
In some cases, completely clearing the application data before trying to install the cache again helps. Go to Settings → Applications → [Game name] → Storage → Clear dataand then copy the cache files again.
Can I delete the Android/obb folder after installing the game?
No, you cannot delete these files. Unlike the temporary browser cache, the files in the obb folder are an integral part of the game. Removing them will cause the game to stop launching or require gigabytes of data to be downloaded again.
Why does the game not see the cache on the memory card?
Most likely, your version of Android is blocking the application's access to the external card in this directory. Try moving the files to internal memory or giving the app special access in your privacy settings.
How can I find out the exact name of a game's package?
The package name is usually listed on the APK download page (for example, com.supercell.clashofclans). You can also view it in the smartphone settings in the “Applications” section by selecting the desired game.
Does the cache storage location affect battery consumption?
Indirectly. If the memory card has a slow read speed, the processor will wait longer for data while in the active state, which can slightly increase power consumption compared to fast internal memory.
What to do if there is not enough space even for the cache?
Use cloud storage to back up photos and videos, delete unused applications, or consider replacing the memory card with a model with a larger capacity and high speed class UHS-I or UHS-II.