Xiaomi, Redmi and Poco smartphone owners often face a lack of built-in storage, especially on models with 32 or 64 gigabytes of memory. After installing several heavy games and social networks, the system begins to warn of a shortage of space, which slows down the device. One effective way to solve the problem is to transfer these applications to an external drive, but in the shell of MIUI this process has its own peculiarities.
Unlike pure Android, the firmware from the Chinese manufacturer limits the standard capabilities of working with the Internet. SD-The user can not always simply select the option "Move to the system" SD" In the settings of a particular application, as this button is often inactive or completely hidden.To circumvent the restrictions, additional actions are required, such as activating a hidden developer menu or using special modes of operation of the drive.
In this guide, we will discuss in detail all available methods of memory expansion, from standard tools to advanced manipulations through ADB. You will learn how to turn a regular flash drive into a full-fledged continuation of internal memory and what risks are associated with transferring system files. It is important to understand that not all applications support external drives due to the security limitations of the Google platform itself.
Preparation of memory card and compatibility check
Before you start transferring data, you need to make sure that your memory card meets the requirements of speed and volume. For stable operation of applications, it is recommended to use Class 10, UHS-I or higher. Slow cards can cause programs to freeze, since the read speed from them is much lower than that of the built-in eMMC or UFS memory of a smartphone.
Put the card into the slot and wait for the mounting process to finish. The system will suggest formatting the drive if it has been used in other devices before. Be sure to back up important files, as formatting will destroy all data. After formatting, check the amount of space available in the settings menu.
⚠️ Note: Using substandard or fake memory cards can cause data loss and damage to the smartphone file system.
Modern versions of Android allow you to use the card as internal storage, but on Xiaomi this feature is often hidden.If the standard menu doesn't offer such options, you'll have to use alternative methods described below. Check the specifications of your model, as some budget devices only support cards up to 32 GB, ignoring large volumes.
- 📀 Make sure the card is marked A1 or A2 for optimal application performance.
- 📱 Check if your smartphone supports exFAT protocol for working with cards larger than 32 GB.
- 🔍 Insert the card when the phone is turned off or through the Safe Retrieval Menu to avoid file system errors.
Standard method of transfer through Android settings
The first and easiest way to try is to use the standard functionality of the system. Even if the transfer button is inactive for most programs, some applications, especially games and media editors, may have built-in support for external drives. To check, go to the Settings menu → Annexes → All applications.
Select the program you want from the list and find "Memory" or "Storage." If the developer has provided this option, you will see a button "Change" or "Move to" SD-Pressing this button will trigger the data migration process, which can take from a few seconds to several minutes depending on the size of the application.
However, it should be noted that after the transfer, the application may work slower if the memory card has a low random read speed. In addition, system components and some Google services cannot be moved under any circumstances, since they are critical to the operation of the operating system. If the button is gray or missing, then the developer of the application has forbidden installation on external media.
In some cases, the system offers to move only a portion of the data, such as a cache or additional files, leaving the main executable file in internal memory. The effectiveness of this method depends on the specific version. MIUI and the safety policy established by the manufacturer.
- 📂 Moving is only available for user applications, system programs are blocked.
- ⚙️ After the transfer, the app shortcut remains on the desktop, but the physical data is on the flash drive.
- 🔄 When you remove the card, the application will stop working until it is re-installed.
Activation of Developer Mode for Extended Functions
If standard methods fail, you need to activate the hidden developer menu, which allows you to access additional system settings, including the forced permission to install applications on external drives. → About the phone and find the line "Version" MIUI" or "Assembly number".
Click on this line 7-10 times in a row with quick taps. The system will tell you that you have become a developer. After that, go back to the main settings menu, go to "Additional" and select "Developers" in the list that opens, find "Forced Saving Permission" or "Force allow apps on external".
Activating this switch allows you to move even those applications that do not officially support this feature, but this does not guarantee stable operation: some programs can start, but crash when trying to save data. Using this option requires caution and testing each moved application.
⚠️ Note: Enabling the Developer Mode may cause system instability. Do not change other options in this menu unless you are sure of their purpose, as this may disrupt Bluetooth or other options. USB-debugging.
Once the function is enabled, it is recommended to restart the device. Then check the memory settings for the selected applications again. Now the transfer button should become active. If no changes have occurred, then the application is rigidly tied to internal memory at the code level and it is impossible to circumvent this limitation without root rights.
- 🔓 Developer mode opens access to hidden system functions.
- 🛠️ The “Permissible permission” function does not work with all applications in the same way.
- 🔄 Reboot is mandatory after changing the settings in the developer menu.
Use Adoptable Storage through ADB
The most radical and effective method is to use a team. ADB (Android Debug Bridge, which is a way to force a memory card to be formatted as internal storage, a process known as Adoptable Storage that encrypts the card and makes it an integral part of the system, USB-cable and installed drivers ADB.
Connect your smartphone to your computer and enable USB debugging in the developer menu. Open the command line on your PC and enter the command to enter the device shell. Then you need to execute the pm set-install-location 2 command, which forcefully changes the priority of the installation to an external card. However, a full memory merger requires formatting.
adb shell sm partition sdcard:private mixedThis command will split the memory card, and the part will remain as files and the part will become system. It is important to understand that after this procedure, the card will only work in this smartphone. If you move it to another device or card reader, you will not be able to read the data without resetting and losing information.
This method is particularly useful for devices with small internal memory, as it actually increases the size of the system partition. However, the speed of the interface and applications can decrease if the memory card is not high performance, and it is worth noting that resetting the phone to the factory will require reconfiguration of the card.
☑️ Pre-formatting verification ADB
Comparison of transfer methods and their effect on speed
The various ways of porting applications have their advantages and disadvantages, which directly affect the user experience. The regular method is safe but ineffective for heavy games. The developer mode gives more freedom, but can cause errors. Formatting through ADB maximizes memory, but lacks flexibility.
The speed of downloading applications from a memory card is always lower than from internal memory. Internal drives of modern smartphones use UFS 2.1 or UFS 3.0 interfaces, providing read speeds up to 1000 MB / s. Even the fastest microSD cards rarely exceed 100 MB / s, which creates a bottleneck in performance.
| Method | Security of data | Speed of operation | Difficulty |
|---|---|---|---|
| Staff transfer | Tall. | Medium | Low. |
| Developer mode | Medium | Low/Mediocre | Medium |
| ADB (Adoptable Storage) | Low (risk of loss) | Low. | Tall. |
| Root rights (Link2SD) | Critical | Depends on the card. | Very high. |
When choosing a method, evaluate your needs. If you just need to make room for photos and music, you better use the card as an external storage and transfer media files to it, not applications. Transferring system processes to a slow medium can lead to interface lags and fast battery drain due to the constant waiting for a response from the drive.
Why did the phone start to brake after the transfer?
Frequent problems and ways to solve them
During the transfer process, users often encounter errors such as “App not installed” or “Insufficient rights”; these messages can occur due to damage to the map file system or conflicts of Android versions.
Another common problem is that widgets disappear or icons rearrange on the desktop after the app is migrated, and that's because the system re-indexes shortcuts, reboots the launcher or resets it, and you can also get errors when you update apps on Google Play.
⚠️ Warning: If the application stopped running after the transfer, do not delete it immediately. Try to return it to internal memory through settings. If this does not help, delete and reinstall it by selecting internal memory when you install it.
Some users note that notifications from messengers stop coming after the transfer, which is due to aggressive energy savings in MIUI, which “sleeps” the processes on the external map. To avoid this, go to the battery settings for a particular application and select “No restrictions” mode.
If a memory card suddenly ceases to be defined by the system, it may be that the contacts in the slot have oxidized or the card has failed. Check it on another device. The frequent reading and writing that characterizes application operation significantly shortens the life of conventional memory cards, which are not designed for such loads.
- 🚫 The “lack of space” error can occur even if there is free memory due to fragmentation.
- 🔔 Lack of notifications treated by setting up autostart and battery.
- 💾 Regularly check the status of the memory card with built-in diagnostic tools.
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Use Samsung’s or SanDisk’s High Endurance memory cards – they’re designed for DVRs and surveillance systems, where permanent recording extends their lifespan in smartphones.
Alternative ways to free up space on Xiaomi
If app portability proves too complicated or unreliable, other optimization options should be considered. MIUI has a powerful built-in cleaning tool that allows you to delete unnecessary files, cache and duplicate photos. Regular use of this tool helps keep the system on track.
You can also transfer folders with media files to a memory card, and in the settings of the camera, voice recorder and instant messengers (for example, Telegram or WhatsApp), you can specify a path to save uploaded files and photos, which will free up a significant amount of internal memory without the risk of malfunctioning applications.
Another effective method is to use cloud storage, which allows you to store photos and videos in the cloud, leaving only thumbnails on your device, which creates the illusion of free space and speeds up your smartphone, since the gallery is not overloaded with thousands of heavy files.
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Transferring media files and using cloud services is often more efficient and safer than forcing applications to migrate to a memory card.
In conclusion, transferring applications to a memory card on Xiaomi devices is possible, but requires caution. The most secure is the use of standard tools, whereas methods with ADB are suitable only for advanced users. Remember that internal memory speeds will always be higher, so you should not turn your smartphone into a storage of archival data at the expense of performance.