With the modern multimedia capabilities of Xiaomi and Redmi smartphones, you can create high-quality content that takes up a significant amount of internal storage. Built-in memory is often not enough to install all the necessary applications, games and save the photo archive in the original resolution.
The process of memory expansion on devices of the Chinese brand is as simple as possible and does not require special technical skills or contacting the service center. The user needs to have the microSD card itself and a minimum set of tools that often come with the gadget.
In this guide, we will discuss in detail all the steps: from choosing the right drive to configuring its operation in the MIUI or HyperOS operating system. You will learn how to avoid data loss during formatting and what subtleties exist when transferring applications to an external medium.
Choosing a compatible memory card for Xiaomi
Before you start any manipulation of the equipment, you need to make sure that the selected drive meets the specifications of your smartphone. the Redmi Note range, Xiaomi Mi and the budget Redmi series may have different limits on the volume and speed of reading / writing. Using the wrong media can lead to slow interface operation or the inability to record video in 4K.
Note the speed class, which is marked Class 10, U3 or V30. For modern phones, the minimum standard is UHS-I, as older versions may not be able to pull the heavy video stream. If you plan to store only documents and music, the requirements may be reduced, but for games and photos, it is better not to save.
It is also important to consider the physical size of the card, and in the vast majority of cases, smartphones are equipped with a MicroSD format (or a microSD format). TF), which is much less than the standard SD-It's hard to confuse them because of their size, but adapters can be misleading for the inexperienced user.
Here are the main parameters that should be guided when buying:
- 📏 Volume: Most modern models support cards up to 256 GB or 512 GB, some flagships up to 1 TB.
- ⚡ Speed: Look for markings A1 or A2 For installation of applications, this will ensure fast download.
- 🛡️ Protection: water and heat protection cards will last longer in active use.
- 🏷️ Brand: Choose proven brands like SanDisk, Samsung or Kingston to avoid counterfeiting.
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Buy memory cards only in official stores or large chain retailers. In markets and in questionable online marketplaces, there is a high probability of running into a fake that will lose data after a month of use.
Search for tray and preparation of device
The first step in the installation process is to detect the SIM card slot and memory. Depending on the Xiaomi model, the tray can be located on different sides of the case, although in 90% of cases it is located on the lower end of the device next to the USB Type-C or Micro-USB charging connector. In some rare cases, for example, in older models with a removable cover, the slot can be hidden under the battery, but modern Redmi uses a retractable mechanism.
To retrieve the tray, you'll need a special metal clip that comes in the phone box. If the original paper clip is lost, you can use a thin stitch or even a stationery clip by straightening one of the ends of it, and the main thing is to act carefully so as not to damage the mechanism or scratch the body.
Insert the tool into a small circular hole next to the tray and press until the characteristic click. The tray should extend a few millimeters, after which it can be removed with your fingers. Be careful: some models use a combined slot where the memory card shares space with the second SIM card.
What to do if the tray is not removed?
⚠️ Warning: Before removing the tray, be sure to turn off the smartphone or at least make sure it is not in active writing or reading mode. Although modern systems protect data, the risk of file system damage when hotly replaced at the time of writing remains high.
Proper installation of MicroSD in the slot
After removing the tray, carefully examine its design. Usually, on one side there is a diagram showing how to correctly orient the SIM card and memory card. In combined slots, MicroSD is often installed on top of the SIM card or in a special groove on the back of the tray, pressed by contacts to the contacts of the tray.
Make sure the golden contacts on the map are downward (to the tray contacts), and the bent corner matches the shape of the cutout. The map should lie flat, not protruding beyond the edge of the tray. If the card stands up with effort, then you have chosen the wrong side or orientation.
Carefully insert the tray back into the phone case. It should come in easily, without creaking or jamming. If you feel resistance, don't push, take out the tray and check the position of the card again. An improperly inserted tray can damage the motherboard's internal contacts.
After the tray is fully installed, turn on the device. Android will automatically detect new hardware. Usually, a new card icon appears at the top of the screen, and a message comes in the notification curtain that the drive is ready for use or requires formatting.
☑️ Checking the installation of the map
Configuring and formatting the drive
After the first turn on, the phone will offer you a new drive. MIUI or HyperOS will offer two main use cases: as a portable storage device or as part of internal memory. The choice depends on your goals and smartphone model, as not all devices support Adoptable Storage.
If you choose to use it as a portable storage device, the card will work like a flash drive, which can be used to download photos, music, videos and documents, which is compatible with all devices and allows you to easily transfer the card to a computer or other phone without losing data.
The second option is formatting as internal memory, in which case the system encrypts the card and combines it with the main storage, which allows you to install the application on the map, but makes it unreadable for other devices without re-formatting, a process that is irreversible without data loss.
For manual configuration or re-formatting, go to the menu:
Settings → About phone → Storage → SD- cardIn the menu that opens, select "Format"; the system will warn you that all data will be deleted; confirm the action and wait until the process is complete; formatting time depends on the size of the map and can take from a few seconds to a couple of minutes.
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Formatting a card as internal memory makes applications much faster, but it ties the card to a particular phone, and you have to re-format it to another phone to transfer the data.
| Type of use | Installation of applications | PC-compatibility | Security of data |
|---|---|---|---|
| Portable storage | Limited (cache/data only) | Full (via adapter) | High (can be removed at any time) |
| Internal memory. | Full (as on built-in) | Absent (format required) | Low (when the phone breaks down, data is lost) |
| Hybrid mode | Partial | Depends on the file system. | Medium |
Data transfer and file management
After successful formatting, you can start filling the drive. The standard file manager Explorer in the MIUI shell makes it easy to move files between the internal memory and the SD card. To do this, open the file manager, select the desired files (for example, in the DCIM folder for a photo) and click on the “Move” or “copy” button.
In the camera settings, it is recommended to immediately specify the saving of new images to the memory card, this will prevent the main storage from filling up quickly. Go to the camera settings, find the Save option and select SD-Now all new photos and videos will be automatically written to external media.
For multimedia files such as music and movies, you can also change the default path in the corresponding applications. For example, in the Mi Music player or video player, you can specify the priority folder on the external drive in the settings, this is especially true for owners of models with a small amount of internal memory, for example, 32 GB or 64 GB.
When you transfer large amounts of data (tens of gigabytes), the phone can run slower. Do not interrupt the copying process and turn off the screen until the progress bar reaches 100%.
⚠️ Note: When transferring system folders or application data, do not manually delete the original files until you make sure the program is running correctly from a new location. Some applications may stop running if you change the path structure to their data.
Possible problems and ways to solve them
Despite the simplicity of the procedure, users may encounter a number of typical problems: often the phone writes that the card is damaged or not supported. This may mean that the file system of the drive is not readable by Android (for example, the NTFS format instead of FAT32 or exFAT), in which case you will need to format using the smartphone itself.
Another common problem is that the phone is slow after you install the card, which is usually a sign of a low-speed drive, and if the memory card is too slow, the system has to spend resources waiting for a response from it, which causes the interface to "freeze," and the solution is to replace the card with a faster model labeled A1/A2.
You may also experience a card being identified but not being recorded, check if you have a physical adapter (if you use an adapter) or a program setting that prohibits writing, and in rare cases, the problem is that the tray contacts oxidize — try cleaning them with a pin or alcohol.
If the phone stopped seeing the card after the system upgrade, try re-inserting it and re-inserting it before turning it off, sometimes resetting the network settings or, in extreme cases, completely resetting the phone to factory settings, but this is a last resort.