Modern mobile games are becoming more and more demanding on smartphone resources. Console-level graphics and huge open worlds take up gigabytes of internal space, which is often lacking on standard models. When the memory is full, the device begins to slow down, and the system blocks the installation of new updates or applications.
The only reasonable solution in such a situation is to use an external one. microSD memory cards. However, simply inserting a flash drive is not enough - the Android system stores all content in internal storage by default. To get around this limitation, you need to make a number of settings and properly prepare the media for working with heavy game files.
In this article we will look at all the ways to free up space: from standard transfer of applications to advanced formatting of the card as internal storage. You will learn which file systems are supported, how to avoid data loss and why some games categorically refuse to move to an external drive.
Preparing a memory card and choosing a speed class
Before you start transferring data, you need to make sure that your memory card meets the requirements of modern games. Slow media can cause freezes and long loading times for levels, which will spoil the gameplay experience. For a comfortable game, it is recommended to use standard cards UHS-I or UHS-II with a speed class of at least 10.
Pay attention to the card markings. If it shows a Roman numeral I or II inside the letter U, this indicates support for a high-speed bus. For heavy projects like Genshin Impact or PUBG Mobile write speed is critical so that the game cache is read without delays.
⚠️ Attention: Before any manipulations with the memory card, be sure to copy all important photos and documents to your computer or to the cloud. The setup process may require complete formatting of the media, which will lead to irreversible data loss.
It is also important to check the maximum capacity of supported cards that your smartphone supports. Budget models are often limited to 32 or 64 GB, while flagships work with terabyte drives. Installing a card with a larger capacity than stated by the manufacturer may lead to unstable operation of the system.
Use a memory card adapter when transferring files from your computer. Connecting your phone directly with a cable is sometimes slower due to limitations of the MTP protocol.
Standard transfer of applications through Android settings
The easiest and safest method, available on most devices without rooting, is to use the built-in transfer function. This method allows you to move the main part of the application to external storage, although some system files will still remain in the internal memory.
First, go to the settings of your smartphone. Find the section Applications or Application Manager. From the list of installed apps, select the game you want to move. If the device manufacturer has allowed the transfer, you will see an active button Edit or Move to SD card.
Click on this button and confirm the action. The process may take from a few seconds to several minutes depending on the size of the game. After completion, the application information menu will indicate that some of the data is on the external drive.
☑️ Standard transfer algorithm
It is worth considering that this method is not universal. Game developers can programmatically prevent their products from being installed on external drives for security or performance reasons. In such cases, the transfer button will be inactive or missing.
Formatting the card as internal storage
More a radical but effective method is the function Adoptable Storage (Adaptive storage). It was introduced in Android 6.0 and allows the system to perceive the memory card as an extension of the smartphone’s internal memory. In this mode, you can install any applications and games on a flash drive without restrictions.
To activate this mode, insert the card into the slot and wait for the notification. In the storage settings, select your card and click the menu (three dots), then select Storage settings. Next, select the option Format as internal storage.
Settings → Storage → SD card → Menu → Storage settings → Format as internalThe system will warn that the card will be encrypted and will only work with this specific smartphone. This is done to protect data: if you lose your phone, it will be impossible to retrieve information from the card on another device.
⚠️ Attention: After formatting the card as internal storage, retrieving it without first “unmounting” it in the settings is strictly prohibited. This will cause the file system to crash and lose all games installed on it.
After formatting is complete, the system may offer to automatically transfer existing data. Agree to this offer to free up space right away. Now, when installing new games from Google Play they will be saved to the extended disk by default.
What to do if the "Format as internal" button is inactive?
Some manufacturers (Samsung, Xiaomi, Huawei) programmatically disable this function in their shells. In this case, you can activate the mode only through a computer using ADB commands, which requires certain technical skills.
Manually moving the game cache through a file manager
Many heavy games, such as Asphalt 9 or World of Tanks Blitz, download the main content separately from the installation file. This data often takes up 2-5 GB and by default is stored in the internal memory in folders Android/obb or Android/data.
You can move these folders manually. To do this, you will need a high-quality file manager, for example Total Commander or FX File Explorer. Find the folder with the game cache in the internal storage, cut it and paste it into a similar directory on the memory card.
The path structure must be followed perfectly. If the game looks for files along the path /storage/emulated/0/Android/obb/com.game.name, then on the memory card the path should look similar, or the system should see the card as the main storage.
| Data type | Default location | Where to move | File size |
|---|---|---|---|
| Installation file (APK) | System folder | Does not move | 50-200 MB |
| Texture cache (OBB) | Android/obb | SD card/Android/obb | 1-4 GB |
| User data | Android/data | SD card/Android/data | 500 MB - 2 GB |
| Saves | Internal memory | It is better not to touch | Up to 100 MB |
After transferring files, be sure to restart the device. If the game does not launch or gives a file verification error, move the folders back - it is possible that this particular version of the game does not support launching the cache from an external address.
Manually moving the OBB and Data folders frees up the most space, but requires care when copying paths. An error in one letter of the folder name will lead to the game not working.
Using the App2SD and Link2SD utilities
If standard methods do not give the desired result, specialized utilities come to the rescue. The application App2SD allows you to analyze installed apps and shows which of them can be moved and which cannot. It also has a cache clearing function, which additionally frees up space.
For advanced users with superuser rights (Root), there is a utility Link2SD. It creates symbolic links, tricking the system into thinking that the application is in the internal memory, although it is physically located on the card.
Using such apps requires creating a special partition on the memory card. This is usually done through the app menu itself or third-party disk partitioning tools. The second partition must be formatted as a file system ext4 or f2fs.
⚠️ Attention: Obtaining root access and using Link2SD will void the warranty on the device and can lead to the phone becoming bricked if done incorrectly. Use these methods only if you are confident in your skills.
The advantage of the symbolic link method is that it allows you to transfer absolutely any application, even system ones, which are usually blocked from moving. However, stability of operation in this case depends on the quality of the memory card and the speed of its controller.
Possible problems and ways to solve them
Users often encounter a situation where, after transferring, the game begins to crash at startup. This may be due to the fact that the memory card reading speed is not sufficient to load resources in real time. In this case, try returning the game to the internal memory.
Another common problem is the disappearance of game icons after a reboot. This happens if the memory card was removed or incorrectly mounted. Check in the storage settings whether the system sees your flash drive and whether there are any file system errors.
Sometimes Android system updates reset transfer settings. After a major firmware update (for example, moving from Android 11 to 12), you may need to manually transfer the data again. Always check the location of the files after updating the software.
Why does the game take up space on both the phone and the card?
Even with a complete transfer, some of the data (settings, logs, temporary files) always remains in the internal storage. This is an architectural feature of Android that cannot be bypassed without deep modification of the system.
Frequently asked questions (FAQ)
Is it possible to transfer games to a memory card without formatting?
Yes, this is possible using standard Android tools through the app menu or by manually moving the cache folders. However, not all games support this mode of operation, and some of the data will still remain in the internal memory.
Why does the game slow down more after the transfer?
Most likely, your memory card has a low speed class (below Class 10). Games require high speed reading of random blocks of data, which cheap flash drives do poorly. It is recommended to replace the card with a faster one.
Is it safe to format the card as internal storage?
The process is safe for the data on the card (they are still deleted when formatted), but makes the card tied to a specific phone. It will not be possible to use this flash drive in other devices or card readers without reformatting.
What to do if the phone does not see the memory card after transferring games?
Try removing and reinserting the card. If that doesn't help, check the slot contacts. As a last resort, format the card on your computer to the exFAT file system and try setting it up in your phone again.
Will progress in the game be deleted when transferred to an SD card?
If the transfer procedure is carried out correctly through the system settings, progress is saved. However, when manually moving files or using third-party utilities, there is a risk of losing saves, so it is recommended to make a backup copy of your account.