How to connect a memory card to a Xiaomi phone: instructions for beginners and experienced users

MicroSD cards remain one of the easiest ways to expand Xiaomi’s smartphone memory, especially if your model doesn’t support cloud services or you prefer to store files locally. However, many users face problems: the phone can’t see the card, asks to format it or doesn’t allow you to port applications. In this article, we’ll look at all the stages of connection, from choosing a card to configuring it as an internal drive or portable storage.

It's important to understand that the process differs depending on the version of MIUI and the phone model. For example, the flagship Xiaomi 13 and POCO F5 support exFAT, and the budget Redmi 10A only FAT32. We take these nuances into account and give recommendations for different scenarios, from simple expansion of memory to using the card as the main storage for applications.

1. Memory card selection: what format and class is suitable for Xiaomi

Not all microSD cards are equally useful. Xiaomi’s smartphones are critical to consider three parameters: capacity, file system and speed class. Start with capacity: most modern phones support cards up to 1 TB, but budget models (such as the Redmi 9A) can be limited to 256 GB. Check the specifications of your model on the official Xiaomi website.

The file system determines the compatibility of:

• 📁 FAT32 — It works on all devices, but does not support files larger than 4 GB (problem for video recordings in the Internet). 4K).
• 📁 ExFAT – Optimal for 64GB cards, supports large files and works faster.
• 📁 NTFS — It is rarely used on mobile devices, but can be useful for connecting a card to a PC.

Speed class (Class 10, UHS-I, V30) is important for recording videos and porting applications. Xiaomi with support for 4K@60fps (for example, Xiaomi 12 Pro) needs a class at least below UHS-I U3 or V30. Class 10 budget cards are suitable only for photos and music.

⚠️ Note: SanDisk Ultra and Samsung Maps EVO They're often faked. Check their speed with an app. A1 SD Bench after purchase: Counterfeiting can run 5 to 10 times slower than the originals.

2. Preparation of the memory card before connection

The new microSD card may not be formatted optimally for Xiaomi.

• 🔍 Check the card for errors via PC (use chkdsk on Windows or Disk Utility on Mac).
• 🗑️ Format it in exFAT (if the phone supports it) or FAT32 PC is faster than formatting on your phone.
• 📱 Make sure there are no hidden files on the card (e.g. from the camera) that may interfere with recognition.

If the card has already been used in another device (camera, recorder), it must be formatted, otherwise MIUI may suggest that the card be “fixed” and the data will be lost.

Checking for errors through PC|Formatting in exFAT/FAT32|Deletion of hidden files|Checking speed through A1 SD Bench-->

⚠️ Warning: Do not remove the card from your phone while formatting or transferring data. This may damage the file system and the card will have to be reformatted via PC.

3. Installation of a memory card in the slot of the Xiaomi phone

In most models Xiaomi slot for microSD is combined with a tray for SIM-The exception is flagships like the Xiaomi 13 Ultra, where the slot is allocated separately:

1. Turn off the phone (recommended, but not necessarily for most models).
2. Use a paper clip or tool to remove the tray (comes with the kit).
3. Place the microSD card in the appropriate slot (usually marked as SD or TF).
4. Put the tray back in before the click.

If the phone does not see the card after turning on:

• 🔄 Reset the device.
• 🔍 Check if the card is inserted correctly (contacts should be facing upwards).
• 📱 Try inserting the card into another phone or PC to rule out its malfunction.

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If the tray is jammed, don't try to pull it out by force.Smear the edges of the tray with alcohol or use a thin screwdriver to poke it on the side.

4. Memory card setup in MIUI: internal or portable storage

After installing the map, Xiaomi will offer to choose its purpose:

• 📱 Portable storage – the card is used as a flash drive (can be retrieved without data loss).
• 💾 Internal storage – the card becomes part of the phone’s memory (you can transfer applications, but retrieval will lead to their removal).

The choice depends on your tasks:

• 🎵 For music, photos and videos, choose portable storage.
• 📱 For transferring applications (if the phone supports) – internal storage.

To change the settings later:

1. Go to Settings. → Memory.
2. Press the memory card.
3. Choose Format as internal or portable storage.

⚠️ Warning: Formatting a card as an internal storage device deletes all data and encrypts it, and then the card cannot be read on other devices without formatting.

5. Transfer data and applications to a memory card

If the card is configured as an internal storage, you can transfer some applications to it:

1. Open Settings → Applications → Application Management.
2. Select an app (such as WhatsApp or Spotify).
3. Click Warehouse → Change → Memory Map.

Not all apps support portability. System applications (Google Play Services, MIUI Launcher) and some games (Genshin Impact, for example) will remain in internal memory.

To transfer files (photos, videos, music):

• 📁 Use the Conductor. MIUI (Menus. → Move it).
• 🖥️ Connect your phone to your PC and drag files into the card folder.
• 🤖 Install. FX File Explorer or Solid Explorer for advanced management.

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Moving apps to a memory card can slow them down, especially if a Class 10 or lower card is a good idea for games and heavy applications.

6. Solving Common Memory Card Problems

If your phone doesn’t see the card or makes errors, try these solutions:

If the card stopped working after the MIUI update, try:

1. Remove the update (if possible).
2. Reset your phone settings (Settings → About Phone → Resetting).
3. Check the card on another device.

7. Optimization of memory card operation: tips for durability

To make the card last longer:

• 🔋 Avoid retrieving the card while recording data (e.g. while shooting a video).
• 📉 Don’t fill 100% of the card – leave 10-15% free space for stable work.
• 🔄 Check the card for errors once a month via PC.
• 🌡️ Do not overheat the card (do not leave your phone in the sun or near the battery).

To expedite the work:

• 🚀 Use support cards A1 or A2 (optimized for applications).
• 🗑️ Regularly clean the cache of applications stored on the map.
• 🔄 Turn off automatic backup to the card (if not necessary).

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If you shoot 4K video frequently, select a separate folder on the map and format it in exFAT every 3 months, which will reduce file fragmentation.

Frequently asked questions