Xiaomi Redmi 6A is a popular budget device that, despite the release of more modern models, is still actively used due to its reliability and availability. However, one of the main problems in the budget segment has always been a limited amount of internal memory, which is often not enough to install modern applications, store a large number of photos in high resolution or record video. That is why expanding storage with a microSD card becomes not just a desirable option, but an urgent need for comfortable use of the gadget.
The process of installing the drive in this model has its own peculiarities, since the tray is combined and requires care when handling SIM cards. Installation incorrectly can lead to the fact that the phone will not see either the memory card or the second SIM card. In this article, we will discuss in detail all the steps from physical installation to software formatting and data transfer, so that you can maximize the ability of your device.
Before you start, it’s important to understand that the Android operating system in the MIUI shell offers flexible settings for working with external drives. You can use the card as a normal storage for files or integrate it into the system as part of internal memory. The choice of the right mode depends on your goals, and below we will discuss both options so you can make an informed decision.
Preparation and physical installation of microSD
The first and most important step is to physically fit the memory card into the device slot correctly. The Redmi 6A uses a hybrid tray, which means there is no separate slot exclusively for the memory card. This design requires the user to choose between two SIM cards or one SIM card and a memory card. If you decide to expand the memory, you will have to sacrifice a second SIM card.
To extract the tray, you'll need a special key-clip, which usually comes with the phone, or a thin paper clip. Put the tool in a small hole on the bottom end of the case, next to the charging connector, and press it slightly until a characteristic click. The tray will extend, and you can remove it from the case. Be careful and do not exert excessive effort to avoid damaging the mechanism.
Notice the shape of the tray: one side is designed for a Nano-SIM SIM, and the other has a specific shape for a microSD. The memory card must be set by the contacts down, exactly the contour of the tray, if you insert it incorrectly, the contacts may not close, or worse, you risk damaging the phone's reader.
⚠️ Warning: Never try to insert or remove a memory card while the phone is on unless it supports hot replacement (although modern smartphones allow this, it is safer to turn off the device when first installed to avoid file system software conflicts).
☑️ Pre-installing check
Once the card is in the tray, gently insert it back into the phone to the end, so you can turn the device on, the MIUI system must automatically detect the new drive and suggest options for its use, and if that doesn't happen, then proceed to software setting.
Formatting a memory card through MIUI settings
Once you physically install the new memory card, it probably won't work properly until you format it, which is the process of creating a file system that Android understands. Usually, the system will suggest formatting the drive immediately after you turn on the phone, and if the notification doesn't come, you need to manually perform this procedure through the settings menu.
To do this, go to Settings, then select Advanced Settings (in some versions of firmware it may be simply called “Advanced”) and find the Memory subsection there. In the list of connected drives, you will see your memory card, which can be displayed as "SD-map" or have the manufacturer's name. Click on it to open the control menu.
In the menu that opens, select Format. The system will alert you that all the data on the map will be destroyed. This is a standard security procedure, so make sure that there is no important information on the card that can not be lost. The formatting process usually takes a few seconds, after which the drive will be ready to write files.
Why does the phone need formatting?
It is important to understand the difference between fast and full formatting. Mobile devices usually only have fast formatting that simply cleans the file table. If your memory card has been previously used on another device and has been working with errors, it is better to format it on a computer with a full sector check before installing it on the phone.
Using the card as internal memory
One of the key features of modern versions of Android is the ability to combine an external memory card with internal storage, a feature known as Adoptable Storage that allows the system to consider the memory card as part of the built-in drive, which solves the problem of lack of space for installing applications, since new programs can be saved by default to the card.
To activate this mode, in the same memory management menu (Settings → Memory), select your card and click on the menu button (three dots in the corner) or find Use as internal storage. The system will again warn you about data loss and explain that once formatted, the card will only work with this particular phone.
Once confirmed, the system will format the card into a secure format and begin to transfer data, which can take a long time, depending on the size of the card and the number of files, during which the phone can run slower, so it is better not to distract it with other tasks.
| Parameter | Portable storage mode | Internal storage mode |
|---|---|---|
| Installation of applications | Only on the built-in memory (by default) | Automatically on a memory card. |
| Portability | The card can be moved to another phone. | The card cannot be used on another phone without formatting. |
| Speed of operation | Depends on the speed of the card. | High speed card (Class 10/U3) |
| Security | Files are available through the file manager | Data is encrypted and linked to the device |
Using a card as internal memory has its pros and cons. On the one hand, you get more space for games and programs. On the other hand, if the memory card fails or you lose your phone, it will be extremely difficult to recover data. In addition, the speed of some heavy applications can decrease if the memory card does not have a high read/write speed.
Transfer applications and data to a memory card
If you don't merge storage, but you still don't have enough internal storage, you can manually transfer individual applications and files. In Xiaomi Redmi 6A with MIUI shell, this process is quite simple, but it has limitations. Not all applications support porting to an external drive, because it depends on the developer of the program.
To transfer already installed applications go to Settings → Annexes → Application management. Select the program you want from the list and find the memory or storage button. If the developer has authorized the transfer, the Move or Change button (to select the storage location) will be active. SD-map.
As for multimedia, it’s easier. Photos, videos, and documents can be moved through standard Explorer (or any other file manager). Simply select files in internal memory, choose Copy or Cut, go to the memory card root folder (usually denoted as MI Card or SD Card) and click Insert.
⚠️ Note: When transferring heavy cache games (e.g, PUBG Mobile, Asphalt) can only transfer the body of the program through the application settings, and the cache will remain inside.
You should also set the camera and messengers so that they by default save data to the map. In the camera settings, find Save on the SD-In WhatsApp and Telegram, you can change the ways you save media files in the settings of each specific application in the Data and Storage section.
Solving card recognition problems
Sometimes users are faced with a situation where the phone stops seeing the memory card or does not respond at all to its installation, this can be caused by a software failure, contamination of contacts or damage to the drive itself. The first step should always be to restart the device, which is trivial, but often helps the system to re-scan the ports.
If the reboot didn't work, try to wipe the memory card contacts with a soft rinse or dry lilaless cloth.Oxidation or fat from your fingers can prevent normal contact. Also check if there is dust in the phone slot. Blow the slot with compressed air or gently clean with a dry toothbrush.
If the card is not detected on the phone or computer, it is likely to fail. Memory cards have a limited life of overwriting cycles. If the computer sees the card but asks it to be formatted, try doing so on a PC by choosing the FAT32 file system (for cards up to 32 GB) or exFAT (for cards over 32 GB).
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Use the SD Memory Card Formatter utility from the SD Association to diagnose and restore memory cards on your computer. It works more reliably than standard Windows formatting.
Another cause of problems may be incompatibility of card size. Although Redmi 6A officially supports large-volume cards, older batches of phones or certain firmware versions may not work properly with cards larger than 128 GB.
Choosing the best memory card for the Redmi 6A
Not all memory cards are the same, and choosing the wrong memory drive can nullify all efforts to expand memory. For budget smartphones like the Redmi 6A, it’s not just capacity that matters, but speed that matters. A slow card will cause the phone to take long photos, freeze while recording videos, or load games for a long time.
Pay attention to the marking of the speed class. The minimum permissible standard is Class 10, which guarantees a recording speed of at least 10 MB / s. However, for comfortable operation of modern applications and video recording in the video format. HD-It is better to choose cards with markings U1 or U3 (Ultra High Speed Marking A1 or A2 indicates optimization for working with applications.
As for volume, Redmi 6A is the best choice for a card with a capacity of 32 to 128 GB. Smaller cards today are unprofitable due to low capacity, and cards with a capacity of 256 GB and above can work unstable or not supported by the phone memory controller. Brands like SanDisk, Samsung, Kingston have proven to be reliable manufacturers.
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Buy memory cards only in official stores or from trusted sellers. The market is full of fakes that have a declared volume only in words, but actually contain many times less data, which leads to file loss.
To sum up, the correct installation and configuration of the memory card can significantly extend the life of your Xiaomi Redmi 6A. It is an easy and cheap way to get more space for your data and applications, making using your smartphone more comfortable and enjoyable.