Modern multimedia smartphones require a significant amount of free space for storing photos in high resolution, recording. 4K-Owners of Xiaomi, Redmi and Poco devices often face a shortage of internal memory, especially in budget and mid-budget models where storage capacity is limited. The solution to this problem is the use of additional flash memory standard microSD, which allows you to expand the capabilities of the gadget without the need to buy a new model.
The process of installing a memory card is technically simple, but requires attention to detail so as not to damage the contacts or tray of the device. Installing or ignoring the formatting can lead to the phone not seeing the drive or working with it unstable. In this article, we will discuss in detail all the steps from choosing the right card to configuring the system for optimal operation with external storage.
Preparation for installation and selection of memory card
Before physically inserting a card into your device, you need to make sure it is compatible with your smartphone. Most modern Xiaomi models support microSDHC and microSDXC cards up to 512 GB, 1 TB and even 2 TB depending on the Android version and hardware platform. Using too large cards on older models can lead to read errors or a complete system failure to work with the drive.
An important parameter is the recording speed class, which is denoted by the label Class 10, U1 or U3. For recording video in high resolution and installing applications, it is recommended to choose cards labeled U3 or V30, as they provide high sequential recording speed. If you plan to store only music or documents, more affordable options for the U1 class will also be suitable.
💡
When buying a memory card, pay attention to the presence of an SD adapter in the kit - it can be useful for fast data transfer to a computer through a card reader.
It is also worth checking the integrity of the card itself and the absence of physical damage to the contacts. If the card has been previously used on another device, it is advisable to pre-copy important data to the computer, as during the setup process the phone may request its formatting.
Slot search and tray extraction
Location of the slot for SIM-The cards and memory depend on the specific model of the smartphone. In most devices of the Redmi Note series and Xiaomi Mi, the tray is located on the lower end of the case, next to the connector. USB-C. In some compact models or devices with a fixed battery of the past generation, the slot could be located under the back cover, but in modern monoblocks a retractable mechanism is used.
To extract the tray, you will need a special metal clip that comes complete with the phone, or a thin needle.It is strongly advised not to use thick objects, toothpicks or knives, as they can damage the latch mechanism or scratch the body. Carefully press into the hole next to the tray until a characteristic click, after which the frame will be pushed out a little.
⚠️ Warning: Never try to remove the tray if the phone is on and active data is being recorded, although modern systems protect against this, the risk of damage to the file system still exists.
Once removed, carefully examine the tray. Depending on the configuration of your smartphone, it can be combined (hybrid) or have a separate space for the memory card. SIM-The card and microSD are combined, and you can use either two SIMs, or one SIM and a flash drive. A separate slot allows you not to sacrifice a second SIM card for the sake of expanding memory.
Proper installation of memory card
Putting the card in the tray requires care and orientation. The microSD card has a bevelled angle on one side that corresponds to a similar groove in the tray. It's a physical key that prevents improper installation. If the card doesn't fit into the slots exactly without effort, then you're holding it wrong -- don't push it to break the plastic.
Place the card in the intended place on the tray. In some models, the tray has a spring-loaded mechanism for fixing the card, in others, the card is simply inserted level with the edge of the tray and pressed with a lid or frame. Make sure that the golden contacts are pointed down (to the contacts of the phone) or up, as required by the design of your particular tray.
☑️ Pre-installing check
Carefully insert the tray back into the case of the smartphone. It should enter smoothly, without strong resistance. If you feel a stress, do not use force - take out the tray, turn it over 180 degrees and try again. Once fully installed, the tray should be level with the body, without facing out, which also provides protection from dust and moisture (if appropriate protection is claimed).
Primary configuration and formatting
After turning on the phone, Android will automatically detect new hardware, and a notification will appear at the top of the screen that a new one has been discovered. SD-You click on it, you'll be in the settings menu, and the system will offer two options for using the drive: as a portable storage device or as internal memory of the device.
Portable storage is the standard and most secure option, and it works like a flash drive, where you can upload photos, videos, music and documents, and the files on the card will be visible to other devices (cameras, computers) without additional encryption, which is recommended for most users.
The Internal Storage option combines the flash drive space with the main memory of the phone, in which case you can install applications on the card, and it is encrypted specifically for this device, and it is important to know that once formatted into internal memory, the card will not be read on other phones or computers without being completely reset.
| Parameter | Portable storage | Internal memory. |
|---|---|---|
| Use of the | Photos, videos, files | Applications, system data |
| Compatibility | Readable on any device | Only on this phone. |
| Security | Data available | Data encrypted |
| Speed of operation | Depends on the card. | Requires high speed (U3) |
For formatting, go to settings. The path usually looks like this: Settings. → The phone. → Storage or Settings → Advanced settings → Memory, choose yours. SD-You can click on "Format" and it takes a few minutes to turn off the phone.
What to do if the phone does not see the card?
Data transfer and file management
Once formatted successfully, the system may suggest transferring existing data (photos, contacts) to a new card, which will free up valuable space in the built-in drive, and you can also manually move files through the standard File Explorer or third-party managers like Total Commander or MIXplorer.
To transfer photos and videos, open a gallery or explorer, select the desired files, click the menu (three dots) and select Move or Copy, indicating the path to the SD-Many modern cameras in Xiaomi smartphones allow you to immediately save pictures to a memory card. To do this, go to the camera settings and find the item "Save to the memory card". SD-map by activating the switch.
⚠️ Note: Do not delete system folders from the memory card, even if they seem unnecessary. Some applications create their own caches and configuration files, the deletion of which will cause malfunctions in the program.
Managing installed applications is also possible, but with limitations: In Android versions 6.0 and higher, porting apps to the map depends on the support of this feature by the developer of a particular application. → Annexes → All applications. Select the application you want, find Memory, and if the Change button is active, you can transfer the program to the memory. SD-map.
💡
Make regular backups of important data from your memory card to your computer or to the cloud, as flash memory is less reliable than a built-in smartphone drive.
Possible problems and ways to solve them
You can experience situations when your phone stops seeing the card or reports an error, and one of the common causes is that the file system is damaged by a card being pulled out or power failure, and then the system will suggest that you format the card again, and if it has important data on it, try reading it on your computer first with the help of recovery software.
Another common problem is that the recording speed is low, which can interrupt video while shooting and slow applications, which indicates that the card does not meet the speed requirements for modern tasks. Check the speed of the card using the A1 utility SD Bench or similar. If the speed is much lower than the stated speed, you may have purchased a fake.
Also worth mentioning is the notification problem. Sometimes Android keeps reminding you that the card is slow or requires attention. Turning off these notifications is completely difficult, but you can limit the background activity of heavy media applications. In rare cases, updating your smartphone firmware to the latest version of MIUI or HyperOS, where you fix the bugs with external drives.