Xiaomi and Redmi smartphone owners often face a critical shortage of free space in the device. Internal memory fills up quickly, especially if you like to shoot high-resolution video or take pictures in RAW format. When notifications of space shortage begin to appear daily, the only logical way out is to use an external drive. Moving media files to a MicroSD is an effective way to free up precious gigabytes for the operating system and applications.
Modern MIUI and HyperOS shells offer flexible tools for managing files, but the transfer process is not always obvious to the beginner. There are several proven methods, from using built-in Explorer to specialized utilities. System files and application data cannot be transferred to the memory card without the risk of loss of device health, so it is important to clearly understand which folders are subject to migration. In this article, we will take a detailed look at each step so you can safely expand storage.
Before you start active, you need to make sure that the drive is compatible and correctly installed. A poor memory card can cause data loss or slow down your smartphone. Make sure you use certified cards of UHS-I or higher format for high write speed. Next, we will discuss the preparatory stage and the main ways of transfer.
Preparation of memory card and compatibility check
The first step to successfully expanding storage is to properly prepare the external media, many users ignore the formatting, which leads to errors in reading or writing files, insert the MicroSD card into the slot of your Xiaomi device, if the smartphone is already on, the system will suggest setting up the drive. If the offer does not appear, you need to go to the settings menu manually.
To get started with the card, it needs to be formatted in a file system that is understandable by Android. This is usually the FAT32 or exFAT format for cards larger than 32 GB. Note that the formatting process will completely destroy all the data on the card, so copy important files to your computer in advance, if there are any. Formatting through the phone interface guarantees the optimal partition structure for working with MIUI.
Once formatted, the system may suggest using the card as an internal storage device or as a portable one. To transfer the photo, you should choose portable use to have quick access to files from other devices. If you choose the option of "internal memory", the card will be encrypted and will not be read on another phone or PC without special unlocking.
⚠️ Warning: Never remove a memory card during the writing or formatting process.This can cause permanent damage to the file table and loss of all saved images.
Using Built-in Explorer to Transfer Files
The easiest and most reliable way to move photos is to use the regular Explorer app, which is preinstalled on all Xiaomi smartphones. This method does not require installing third-party software and provides complete control over the process. Open the application and find the partition responsible for internal storage, often marked with the phone icon.
Inside the internal memory, you need to find the DCIM folder. This is where all the pictures taken on the camera are saved by default. It is also worth checking the Pictures folder, where screenshots and images from messengers can be stored. Select the necessary files or entire folders with a long press, then select the "Move" or "Copy" function in the bottom menu.
Once you have selected the action, the system will ask you to specify the destination. SD-It's recommended to create a new folder there, for example, Photo_Archive, So we can keep the data from mixing files with the system data, and this approach allows us to keep the logical structure and quickly find the right images in the future.
☑️ Pre-transfer check
It's important to distinguish between Copy and Move. When you copy, the originals stay in internal memory, taking up space until you manually delete them. Move them automatically delete files from the source after you successfully write to the map. Use moving if your main goal is to free up space.
Set up automatic saving in the Chamber
To avoid wasting time on manual transfers in the future, it is advisable to set up automatic saving of new images immediately to the external drive, a feature that is especially relevant for owners of models with a small amount of internal memory, but it is worth remembering that the write speed to the card can be lower than the internal memory, which affects serial shooting.
Go to the Camera app and click on the menu icon (three bars) in the top right corner. Go to Settings. Scroll through the options list to the save section. Find the Save on option. SD-Now all new photos and videos will be automatically sent to external storage.
Some advanced users prefer to shoot in format RAW These files take up much more space than standard files. JPEG. Automatic recording SD-map RAW-Photos are almost a must, as one photo can weigh 25-50 MB.
⚠️ Note: If you plan to shoot video in resolution 4K At 60 frames per second, make sure your memory card’s write speed is at least 90MB/s (class) V90), Otherwise, the recording may be interrupted.
Storage Comparison: Internal Memory vs. SD
Understanding the difference between memory types will help you make an informed decision about which files to move. Your smartphone’s internal memory is built on eMMC or UFS technology, which provides fast read and write speeds, critical for fast system operation, heavy application launches, and video buffering.
Memory cards, even the fastest, are usually inferior to internal storage in terms of random access to data, which is why it is not recommended to transfer the applications themselves to the map, they will work slower, but for static files such as photos, music and documents, the difference in speed is almost invisible to the user.
Below is a table comparing the characteristics of data storage on different media in the context of Xiaomi smartphones:
| Characteristics | Internal Memory (UFS) | SD-map (UHS-I) | Influence on photo |
|---|---|---|---|
| Reading speed | High (up to 1000 Mb/s) | Medium (up to 100 Mb/s) | Quick view of the gallery |
| Recording speed | Very high. | Depends on the class of the card. | Speed of serial shooting |
| Reliability | Tall. | Average (loss risk) | Archives preservation |
| Cost of GBB | Tall. | Low. | Budget savings |
Based on this data, the optimal strategy is to store the operating system and active applications on the internal drive, and the photo and video archives on the external one, which ensures maximum performance of the device with minimal upgrade costs.
Why can a memory card work slowly?
Solving Common Problems in Transfer
Users can experience a variety of errors in the migration process, and one of the most common problems is the message "File is too big," which occurs when the card is formatted in a FAT32 file system that does not support files larger than 4GB. The solution is one: reformat the card to exFAT, saving the data beforehand.
Another thing is that the phone sees the card, but refuses to write files to it, which may be due to access rights. In the newer versions of Android (11, 12, 13 and above), the security system has become stricter. SD-The system will request permission to access all files on the media through the Explorer.
If the transfer is stuck at a certain percentage, maybe one of the files is corrupted. Try to transfer photos in small groups of 50-100 pieces, which will help to identify the specific broken file that blocks the process and exclude it from the transfer.
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Use the Cleanup function in the Security app before transferring. Deleting cache and temporary files can free up space needed to buffer the copying process.
⚠️ Note: If after transferring photos are no longer displayed in the Gallery, try to restart the smartphone.
Alternative Ways and Cloud Services
Beyond physical porting, there is a cloud-based backup option: Google Photos or Xiaomi Cloud, which allows you to automatically upload images to the Internet, which is convenient for synchronization between devices, but requires a stable network connection and often paid subscriptions for large volumes.
For users who prefer full control over data, there is the possibility of connecting a memory card via a computer. OTG-You can plug a flash card into a reader directly to your phone and copy files without passing the slot in the device.
In conclusion, regular cleaning of internal memory is the key to a long and fast work of your Xiaomi. SD-The card is a basic skill that every Android smartphone owner should learn, not only frees up space, but also keeps your memories safe, separate from the system partition.
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Regular transfer of media files to an external medium prolongs the service life of the internal memory of the smartphone, reducing the wear of its cells from constant recording operations.