Xiaomi smartphone owners often face a lack of built-in storage, especially when actively shooting high-resolution video or installing heavy games. Built-in memory fills up faster than expected and the system begins to warn of a shortage of space. Using a microSD card becomes the optimal solution for expanding the capabilities of the device without buying a new model.
But just inserting a drive is not enough — you need to configure it properly to maintain your data. MIUI offers flexible tools to manage external drives, allowing you to choose between portable storage and internal memory.
In this article, we will discuss the entire process in detail: from choosing the right map to transferring data and optimizing the system, you will learn how to turn a regular flash drive into a full-fledged continuation of a smartphone, as well as what nuances should be considered when working with the Android file system.
Choosing the Right Memory Card for Xiaomi
The first step to successful memory expansion is to buy a quality storage device. Cheap cards from unknown brands often cause phone freezes, data loss and low write speeds. For modern Xiaomi smartphones that support high data rates, speed class is critical.
Note the Class 10, U3 or V30 markings, which ensure that the card can support 4K video recording and fast application performance. If you plan to store only documents or music, a more budget option is suitable, but it is better not to save for the system.
- 🚀 Read speed: Choose cards at speeds from 90MB/s for comfortable work.
- 💾 Volume: Check the model specifications for the maximum volume supported (often up to 256GB or 512GB).
- 🛡️ Protection: Look for labels on water, shock and X-ray protection.
⚠️ Warning: Using fake memory cards can lead to irreversible file system damage and loss of all data without recovery capability.
Also, consider the physical size: the slot of the Xiaomi smartphone fits only the microSD format. SD-card, you will need a special adapter, but using it on your phone is not recommended because of the risk of poor contact.
Installation and primary formatting of the drive
After purchase, the card must be installed in the tray of SIM cards. Most Xiaomi models have a combined tray: either two SIM cards, or one SIM card and a memory card. Carefully remove the tray with a paper clip, put the drive and return it.
Once turned on, the smartphone will notify you of the discovery of a new device, and the system will offer two use cases: as a portable storage or as internal memory, the first is suitable for transferring files, the second is for installing applications, but it requires formatting that will delete all data on the map.
☑️ Pre-formatting verification
The formatting process takes a few minutes, at which time it is not recommended to take out the card or restart the phone, and once completed, the system will create hidden partitions for Android system files.
| Parameter | Portable storage | Internal memory. |
|---|---|---|
| Use of the | Photos, videos, music | Applications, cache, data |
| Compatibility | Readable on PCs and other phones | It's only read on this phone. |
| Security | You can get it out any time. | Requires unmounting |
| Speed. | Standard. | Maximum (with UFS support) |
Mode: Portable storage vs. internal memory
The choice of mode is the key to setting up, the portable storage mode is standard, and in this case the card works like a normal one. USB-Driver: You can connect your phone to your computer at any time and copy files.
Adoptable Storage integrates the card into the system, and the smartphone encrypts the data, and the card becomes unreadable on other devices without special unlocking, which increases security, but reduces the flexibility of use.
If you change phones frequently or transfer data to your computer, it is better to leave portable storage mode. Internal memory mode is suitable for stationary use of the phone as a main device with a lot of games.
You can switch between modes at any time through the settings, but this will require re-formatting, so it is better to determine the main use case in advance.
How to transfer applications and data to SD-map
Not all applications support external memory transfer, software developers decide whether they can be moved, but MIUI has ways to get around some limitations or migrate some data.
To transfer, go to Settings → Annexes → All applications. Select the program you want. If transfer is possible, move to the button. SD-If the button is grey, it means that the application is tightly tied to internal memory.
⚠️ Note: After the application has been moved to SD-The widgets and some features may stop working correctly before the first device restart.
In addition, many applications have their own storage settings, for example, in messengers or navigators, you can specify the path to maps and downloadable files manually.
The secret method of transfer through ADB
Setup of camera and gallery to work with external memory
The most effective way to free up space is to set up the camera to save photos and videos immediately on the camera. SD-This will prevent the internal memory from filling up quickly, especially when shooting in the 4K.
Open the camera app, click on the three bars in the corner and select Settings. Find Save in SD-* and activate the switch. Now all new images will be automatically sent to the external drive.
For existing photos, the Xiaomi Gallery has a move feature: select the desired albums or files, click "More" and select "Move to." SD-map.
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Use the Cleanup feature in the Security app to quickly find large video files and move them to a memory card in one action.
If the camera stutters when shooting video, try lowering the resolution or replacing the card with a faster one.
Solution and maintenance of memory card
In the process of operation, you can experience read errors or slowdowns, often due to file fragmentation or logical errors of the file system, and regular maintenance helps to avoid problems.
Every few months, it's helpful to check the card for errors, either by connecting your phone to your computer or using the built-in diagnostics in Settings → Storage, and the system will suggest correcting errors if they are found.
- 🔄 Defragmentation: Android doesn’t require classic, but cache cleaning helps.
- 🧹 Cleanup: delete unnecessary files so that the space is at least 10%.
- 🔒 Safe Extract: Always use the “Extract” feature in the settings before physically deleting the card.
If the card is no longer defined, try restarting the phone. If that doesn't work, maybe the contacts have oxidized - gently wipe them with a wipe or an alcohol wipe.
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Regular backup of data from SD-Cards to the cloud service or computer - the only way to guarantee the safety of information in the event of failure of the drive.