How to open a memory card on a Xiaomi phone: instructions for all models

You put a microSD in a Xiaomi smartphone but the system doesn't see it or open files? This problem is familiar to many owners of Redmi, POCO and Mi devices — especially after a MIUI update or reset. 90% of the time, the memory card won't open due to improper formatting, file system conflict or firmware limitations.

In this article, you’ll find step-by-step solutions for all versions of MIUI (12 to 14), including how to diagnose the problem, configure the card as an internal or removable drive, and how to restore data if the smartphone stopped recognizing it. We’ll take a look at the nuances for popular models — from Redmi Note 12 to Xiaomi 13 Ultra — and explain why sometimes the card is visible in Settings but not displayed in the File Manager.

Why Xiaomi doesn’t see a memory card: the main reasons

Before you try to open a card, it’s important to understand why it’s not being identified, and at Xiaomi, it’s most often due to one of the reasons:

• 🔄 Incompatible file system: the card is formatted into NTFS Or exFAT, and the smartphone supports only FAT32 (relevant to devices with MIUI 12 and older).
• 📱 Firmware limitations: in some models (e.g, POCO F5) Support for cards with a volume of more than 512 GB is disabled without manual driver updates.
• 🔌 Physical damage: The contacts of the card or slot are contaminated, or the drive itself has failed (check on another device).
• 🛠️ Failure of installation: system MIUI I couldn’t automatically connect the card due to an error in the /storage (Resolved by rebooting or manual mounting).
• 🔒 Write protection: Lock switch is enabled on the card (relevant for microSD adapters) → USB).

If the card used to work but doesn’t open now, check it for viruses (especially if you connected to a PC) – MIUI can block access to infected drives. It’s also worth making sure that the card is not fake: cheap drives from unknown brands often have less real volume than declared, which leads to failures.

How to check if Xiaomi recognizes a memory card

Before you try to open files, make sure that the smartphone actually “sees” the map, and you can do this in three ways:

1. Through Settings: Go to Settings → The phone. → Memory. If the map is defined, it will be displayed as SD-card.
2. In File Manager: Open the Files app (folder icon) and check the Device or Storage section.
3. Through Device Manager: Enter ##4636## in the dial bar, then select Phone Information → Memory.

If the card is displayed in Settings but does not open in Files, the problem is likely access rights or corrupted data, and if it is not anywhere, check the physical connection or try to restart the phone.

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On some models (e.g. Redmi 9A), the memory card slot is combined with a SIM tray. Make sure you insert the card with the front side up (contacts to the phone).

How to open a memory card on Xiaomi

Depending on how the card is connected (like internal memory or removable storage), the way you access the files will be different. Let's look at both.

Option 1: Card as a removable drive (recommended)

If you have formatted the card as a portable storage, access to the files is done through a standard File Manager:

1. Open the Files app (if not, download it from Google Play).
2. At the top of the screen, press three dots (⋮) and select Settings → Show hidden files (if necessary).
3. Go to section. SD-card.
4. If the map is not displayed, click Update (round arrow in the upper right corner).

If the files do not open, try rewiring the card:

1. Go to Settings. → Memory.
2. Click on the name of the card → Remove (do not physically remove!).
3. Wait 10 seconds and press Connect.

Option 2: The card as an internal memory

If the card is formatted as an internal storage (Adoptable Storage option), it becomes part of the system and does not appear as a separate drive.

• 📁 Files from the card will be available in standard folders (DCIM, Downloads, etc.) with internal memory.
• 🔧 To see the real memory distribution, go to Settings → Memory. → Additionally.
• ⚠️ Warning: Removing such a card without first unmounting may result in data loss!

To return the card to removable drive mode, it will have to be formatted again (all data will be deleted).

1. Go to Settings. → Memory. → SD-map.
2. Click Format as a portable storage.
3. Confirm the action (the process will take 1-5 minutes).

Check file system compatibility (FAT32 for MIUI)

Format the card on PC (if it is new)

Insert the card into the slot before clicking.

Restart the phone after connecting-->

How to format a memory card for Xiaomi

If the card does not open due to an incompatible file system, it needs to be formatted. Importantly, this will delete all data! For Xiaomi, only FAT32 (for cards up to 32 GB) or exFAT (for cards up to 64 GB and up, but with restrictions in MIUI 12) is suitable.

Formatting via telephone

The easiest way is:

1. Go to Settings. → Memory. → SD-map.
2. Click Format (or Clean)
3. Select the file system: FAT32 for cards up to 32 GB (maximum compatibility). exFAT for cards up to 64 GB, but may not be supported on older models (Redmi 5/6).

Confirm the action and wait for the completion.

PC formatting (recommended for cards >64 GB)

If the phone doesn’t offer exFAT, format the card on your computer:

1. Connect the card to the PC through the card reader.
2. Open this computer (Windows) or Disk Utility (macOS).
3. Right-click on the map → Format.
4. Select: File system: FAT32 (for compatibility) or exFAT (for cards >64 GB). Cluster size: 4,096 bytes (optimum for Xiaomi).

Start.

Important: If a 128GB card or more is visible and the phone doesn’t see it after formatting in exFAT, try formatting it in FAT32 using the GUIFormat or Fat32Formatter utility (they bypass the partition size limit of Windows).

What to do if Xiaomi does not see the memory card after the MIUI update

After the MIUI update (especially from 12 to 13/14), many users find that the memory card is no longer defined, due to changes in the system kernel and storage drivers.

• 🔄 Reboot your phone: Sometimes a simple reboot helps, as the system doesn’t have time to properly initialize the card after the update.
• 📱 Reset the storage settings: Go to Settings → Annexes → Application management. Press three dots (⋮) → Reset your application settings. Reboot your phone.
• 🛠️ Update storage drivers (for hardwired devices only): Install Magisk and Storage Redirect. or run a custom kernel with exFAT support (e.g., FrancoKernel). 🔙 Reverse to the previous version MIUI (If the card is critical: Download the old firmware from Xiaomifirmwareupdater.com. refashion your phone via Fastboot or Recovery.