How to find out the real amount of memory card in the smartphone Xiaomi: all working ways

Have you bought a new memory card for Xiaomi Redmi Note 12 or POCO X5 Pro, but are not sure that the seller honestly stated its volume? Or want to check how much space is left on the already used microSD? Xiaomi smartphones have several ways to determine the capacity of the drive, from standard MIUI tools to professional utilities. In this article, we will analyze all the methods, including hidden nuances that are not written in the official instructions.

It's important to understand that the actual size of the memory card is always smaller than the manufacturer's stated size. For example, the package is 128 GB, and the system shows 119 GB, which is normal. The reason is the difference between decimal (1 GB = 1000 MB) and binary (1 GB = 1024 MiB) numerals. But if the difference is greater than 10%, you may have been deceived. Next, you will learn how to accurately measure the capacity and recognize the fake.

1. Check through MIUI settings: the fastest way

The method works on all Xiaomi, Redmi and POCO smartphones with the MIUI 12-14 shell, including old models like Redmi 9A and new flagships like Xiaomi 14 Ultra. The main advantage is that you do not need to install additional programs.

Instructions:

• 📱 Open the Settings app (cog icon).
• 🔍 Go to the About Phone section. → Storage (or Memory in some versions).
• 💾 Scroll down to the Memory Map block (if the card is inserted). This will show: Total volume (e.g. 111.79GB). Available (free space). Occupied by the system (if the card is formatted as internal storage).

⚠️ Note: If there is no information about the memory card in the Storage section, check it:

⚠️ Note: The card may not be recognized because of: 🔌 Flawed contact in the slot (try to extract and insert again). 🛠️ File system damage (formatting required). 🚫 Xiaomi incompatibility (some exFAT cards are not supported on older models).

Check the physical connection|Reboot your smartphone|Try the card on another device|Format via PC if data is not important-->

2.Use of file manager: detailed information

Xiaomi’s built-in File Manager shows not only the size but also the structure of folders on the map, which is useful if you suspect hidden files or app cache are taking up space.

How to check:

1. Open the Files app (folder icon).
2. At the top of the screen, select the Memory Card tab (or SD-map).
3. Click on the three dots in the upper right corner → Properties.
4. The window that opens will be indicated: 📊 Total volume (e.g. 119.2 GB). 📂 Occupied (disaggregated by file types: photos, videos, documents). ⚠️ Problem files (if there is any corrupted data).

🔍 Tip: If you see a message in the properties of the card "File system: RAW", This means that the drive is damaged and needs to be formatted. RAW-Partitions through standard tools – you will need a PC with programs like TestDisk or EaseUS Partition Master.

16-32 GB|64–128 GB|256–512 GB|1 TB or more|I don't use it.-->

3. Third-party applications: for advanced users

If standard methods don’t work, install specialized utilities that show the real storage capacity at the controller level, which helps detect forgeries (for example, when a 128 GB card actually has 16 GB of storage).

Top.-3 apps:

⚠️ Note: When testing a memory card with applications such as A1 SD Bench:

⚠️ Attention: 🔋 The battery should be charged. >50% (tests consume a lot of energy). 📴 Close all background applications (they may distort the results). ⏳ The full test on a 256 GB card takes 10-15 minutes.

💡

If the app shows the card size as 0B or N/A, extract it and check it on another device – perhaps the problem is in the smartphone slot.

Checking via PC: for accurate diagnosis

Connecting a memory card to a computer or laptop gives you the most complete information, a method that is mandatory if you suspect that the card is fake or damaged, for example, AliExpress often sells drives where the actual volume is 4-8 times less than the stated volume.

Step-by-step instructions for Windows:

1. Remove the card from Xiaomi and paste it into the PC card reader.
2. Open Explorer (Win + E) → right-click on the map disk → Properties.
3. The General tab will show: Capacity (e.g. 111 GB). Occupied/free. File system (FAT32, exFAT, NTFS).
4. For a deep check, use H2testw: Download from the official website. Select a card drive → press Write + Verify. If the test shows errors like "Only 32 GB could be verified", the card is a fake.

💡 Why PCs Show Different Volume Than Smartphones?

That's OK! Xiaomi (like other Android devices) reserves some memory for backup files, and Windows displays a "clean" amount, usually a 1-5% difference, but if the gap is greater than 10%, that's a good thing to be wary of.

5. ADB teams: for technical specialists

If you're a power user, you can find out the map volume through ADB (Android Debug Bridge), a method that is useful when the map is defined by the system but not displayed in the MIUI interface.

Instructions:

1. Enable Developer Mode on Xiaomi: Go to Settings → About Phone. Tap 7 times on MIUI Version. Go back to Settings → Additional → For Developers. Activate Debugging on USB.

cmd

PowerShell

adb shell


sm list-disks

This will show a list of connected drives, including SD-Like a map:

disk:179,65

ls -l /dev/block/mmcblk1

(Replace the mmcblk1 with your drive from the previous step).

df -h /storage/XXXX-XXXX

(where XXXX-XXXX is the card identifier that can be found in ls /storage).

📌 Example of inference:

/dev/block/mmcblk1: 119GiB (128GB)

Here, 119GiB is the real volume, and 128GB is the manufacturer’s marking.

💡

ADB-The commands show raw information from the card controller, without considering the file system. This is the most accurate way, but requires terminal skills.

6.How to recognize a fake memory card

According to a study by Fakespot, up to 30% of memory cards on the market (especially cheap ones with AliExpress) are fakes.

• 🔍 Volume mismatch: 128GB declared, and system shows 14-16GB.
• ⚡ Unrealistically high speed: The characteristics are indicated UHS-II 300 MB/s, The tests show 10 MB/s.
• 🛠️ Write errors: Files are damaged or disappear after copying.
• 🏷️ Suspicious packaging: No holograms, label crooked, typos in brand name (e.g., "SanDisk" instead of "SanDisk").

🔎 How to verify authenticity:

1. Compare the serial number on the map with the manufacturer's database: SanDisk: online check. Samsung: verification service.

A1 SD Bench

"Made in China"

💡

Buy memory cards only from official dealers (e.g. SanDisk on Ozon marked "Original"). Even if the price is 20-30% higher, it is cheaper than losing data due to forgery.

7. Frequent errors and their solutions

When you work with memory cards in Xiaomi, users face typical problems, and let's look at the most common ones and how to fix them.

⚠️ Warning: If the map is no longer defined after formatting, don't panic. 90% of the time, the problem is solved by re-formatting via PC using the utility. SD Card Formatter (you can download it on the official website) SD Association).

FAQ: Answers to Frequent Questions