Owners of Xiaomi, Redmi and POCO smartphones often face a lack of built-in storage, especially when shooting high-resolution video. Overflow memory leads to slowdowns, inability to install updates and application failures. The solution is the use of an external microSD memory card, which allows you to expand storage without buying a new device.
The process of moving files can vary depending on the version of the MIUI shell or HyperOS, as well as the smartphone model. Some users prefer to transfer the already captured material manually, others configure automatic recording immediately to an external medium. In this article, we will discuss all available methods in detail so that you can free precious gigabytes on the internal disk.
It is worth considering that not all models support the installation of memory cards, so before you start manipulating, you need to make sure that there is a corresponding slot in your device. If the slot is combined (SIM + microSD), you will have to sacrifice a second SIM card for the sake of expanding memory.
Preparation of memory card and compatibility check
The first step before moving a video is to physically install a microSD card into a smartphone.Make sure you use a quality memory card from a proven manufacturer, as cheap counterparts can work slowly or fail quickly.Write speed is especially important if you plan to shoot video in 4K or Full HD 60 FPS.
Once you have the card installed in the tray and your phone turned on, the system must automatically identify the new media. Often, Android suggests formatting the card to adapt the file system to your needs. If you use the card earlier on another device, it is recommended to back up the data to your computer before formatting.
To work properly with large video files, the file system must support files larger than 4 GB. The standard FAT32 system has a limit of 4 GB per file, which is critical for modern video formats.
- 📱 Make sure the smartphone is turned off before removing the tray for SIM-map.
- 💾 Use speed class cards UHS-I or higher for video recording 4K.
- 🔍 Check the maximum supported card volume in the specifications of your Xiaomi model.
- ⚙️ Format the map through your phone settings for optimal compatibility.
⚠️ Note: Formatting a memory card completely removes all data from it. Be sure to save important files on your computer or in the cloud before starting the procedure.
Modern Xiaomi smartphones usually support cards up to 256 GB, 512 GB and even 1 TB, but it is better to clarify this information in the official specification on the manufacturer's website. Using cards of too large volume can lead to unstable operation of the device if the memory controller is not designed for such values.
Setup the camera to record video directly to the map
The most effective way to save internal space is to set up your smartphone camera so that it stores new videos and photos directly to the memory card, in which case you do not have to constantly transfer files manually, and the internal memory will remain free for the system and applications.
To activate this feature, you need to open the Camera app and go to the settings menu. The interface may vary slightly depending on the version of MIUI, but the logic remains the same. Find the item responsible for the priority storage and change its value.
This is usually called "Save to" or "Priority Storage," and when you switch to a memory card, all new images and videos will automatically enter the DCIM folder on an external medium.
☑️ Setting up a priority storage
Importantly, some shooting modes, such as slow motion or ultra-high resolution video, may ignore settings and store data in internal memory to ensure write stability, due to the limited write speed of some memory cards.
- 🎥 Open the Camera app on the main screen.
- ⚙️ Click on the menu icon (three horizontal lines) in the upper right corner.
- 💾 Select the "Settings" item in the drop-down list.
- 📂 Find the “Save in” option and set the value «SD-map».
⚠️ Note: If the memory card has a low recording speed, the camera can warn you that it is impossible to record high-quality video to an external medium and force you to switch to internal memory.
Once set up, it is recommended to take a few test shots and videos to make sure that the files are actually saved along the new path.You can check this through the gallery by looking at the file properties (information) where the path to the directory will be indicated.
Moving video through the built-in conductor
If the videos are already captured and occupy space in internal memory, they must be moved manually, using the standard Explorer (or Files) tool in the MIUI and HyperOS shell, a method that allows you to selectively transfer specific videos without touching the rest of the data.
Open the Explorer app and go to Internal Drive, and you need to find the folder where the video is stored. DCIM/Camera for camera files or MIUI/screen_rec screen-record.
Select the files you want with a long press, and once you select one file, you will see an action menu, and you can select several files at once by ticking each file, or you can use the "Select All" function in the control menu.
| Action. | Description of the process | The result |
|---|---|---|
| Copy | Creates a duplicate file on a memory card | The file stays in the phone’s memory and appears on the map. |
| Move it | Transfers the file by deleting the original | The file disappears from the phone’s memory and appears on the map. |
| Send. | Use Bluetooth or Mi Drop | The file is transferred to another device |
Click on the Copy or Move button (usually an icon of scissors or two sheets «SD-map" or "External drive. Go to the destination folder, for example, create a new folder «Video_Archive», and press "Insert».
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When moving large amounts of data (more than 10 GB), it is better to use Move mode so as not to take up double the amount of memory during the copying process.
The process can take some time depending on the video size and memory card speed.Do not turn off the screen or close the Explorer app until the operation is complete to avoid damaging files.
Use of the application Files from Google
Many Xiaomi smartphones pre-installed Google’s Files app, which offers a more advanced interface for file management than standard MIUI Explorer.It automatically sorts files by type, making it easier to find heavy videos.
Launch the app and go to the Review tab. At the bottom of the screen, you'll see the Internal Storage sections and «SD-Open the internal storage and find the video folder.
Select the videos you want, click on the three dots in the top right corner, and select Move to.. In the navigation window that opens, select SD-Map and destination folder. Google Files interface is often more stable when working with large amounts of data.
- 📂 Open the Files app (Files).
- 📹 Go to the Video category for quick access to all videos.
- ✅ Select the files that need to be moved.
- ➡️ Click "Move" and select the path to SD-map.
A unique feature of this app is the Cleanup feature, which can show duplicate videos or low-quality files that can also be moved or deleted, which helps to free up space even more efficiently.
⚠️ Note: When you move system videos or files that are necessary for some applications to work (such as WhatsApp statuses), the application may stop seeing these files.
If you can’t find the Files app, it can be downloaded from the Google Play store.It’s free and doesn’t contain ads, making it a great tool for cleaning up your smartphone’s memory regularly.
Storage settings for messengers and social networks
Not only are the cameras taking up a significant amount of memory, but the messaging files are also taking up. Telegram, WhatsApp and Viber, by default, store the media in internal memory, and you can change this behavior in the settings of the apps themselves.
In Telegram you need to go to Settings → Data and memory → Save path. You can choose a memory card here, if the app has the appropriate permissions. However, modern versions of Android restrict direct access to the memory card. SD-mapping.
For WhatsApp, the path is a little more complicated: Settings → Chats → Backup chats (for backup) or storage management. Often WhatsApp saves the video to a shared WhatsApp/Media folder, which can then be moved manually through the explorer, as described in the previous sections.
Why Some Apps Can't See Why Some Apps Can't See Why SD-map?
It is recommended to regularly clean the folders of messengers, deleting old videos, or set up automatic cache cleaning. Videos from statuses and temporary messages often weigh little, but their number is in the thousands, taking up gigabytes of space.
- 🗑️ Check Download folder regularly for forgotten videos.
- ⚙️ In Telegram settings, enable auto-deleting media after expiration date.
- 📉 Use the “Clear Cache” function inside each messenger.
- 📼 Transfer important videos from messengers to a separate folder on SD-map.
Managing social media files requires discipline, and if you're actively using video or getting a lot of video circles, memory will fill up very quickly without regular cleaning.
Possible problems and solutions
When working with external drives, users can encounter a number of errors — «SD-Card damaged" or "Can't read the card. "This can be caused by improper card extraction or file system failure.
If the phone has stopped seeing the map or files are not being copied, try restarting the device. Often this resolves driver software conflicts. If the problem persists, remove the map, wipe the contacts and paste back before the click.
In case of formatting error or impossibility of writing, it is possible that the card has an exFAT file system that your particular smartphone does not support without additional drivers, or vice versa, it requires exFAT for files larger than 4 GB.
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Most video recording problems are solved by formatting a memory card directly in the smartphone settings, rather than on a computer.
It's also worth checking if the map is crowded. Even if there's space on it, fragmentation or sector errors can prevent new data from being written. Use your computer to check the map for errors using the CHKDSK utility or analogues.