Where Xiaomi Smartphone Stores Memory: Physical Location and Logical Structure

Have you ever wondered where your Xiaomi smartphone stores all the information, from photos to installed apps? Unlike computers where a hard drive or SSD is easy to identify, phones have memory hidden inside the case and its logical structure scattered across several sections, this article will help you understand not only the physical location of memory chips (eMMC/UFS) on the board, but also how the MIUI operating system organizes storage for the user.

We'll take a closer look: 1) Where is the physical memory (chips) eMMC/UFS) on the motherboard in popular Xiaomi models (from Redmi Note) 10 Xiaomi 13 Ultra). 2) How to logically divide the storage in MIUI (internal memory, system partitions, virtual volumes). 3) How to check the amount and type of memory through the engineering menu and third-party utilities. 4) What to do if your phone doesn’t see your internal memory SD-map.

We’ll focus on practical tips: how to safely clear the cache, transfer data to a memory card or cloud, and what labels like “UFS 3.1” or “eMMC 5.1” mean in the specifications of the device. If you’re planning to disassemble a phone for repair or just want to understand why 128 GB is actually only available 112 GB – this article is for you.

Physical location of memory on Xiaomi board: where to look for a chip eMMC/UFS

In Xiaomi smartphones (as in most modern Android devices), memory is integrated directly into the motherboard as a chip, depending on the model and year of release, this can be:

• 🔹 eMMC (budget models: Redmi) 9A, Poco C31) — slower and cheaper standard.
• 🔹 UFS 2.1/2.2 (Mid-segment: Redmi Note 11, Xiaomi 11 Lite) – faster than eMMC, but inferior to the flagships.
• 🔹 UFS 3.0/3.1 (flagships: Xiaomi 12 Pro, Xiaomi 13T) — maximum speed of reading/writing.

The memory chip is usually located next to the processor (SoC) and RAM (RAM). For example, in the Xiaomi Redmi Note 10 Pro, the UFS 2.2 chip is located under a metal screen on the back of the board, next to the Qualcomm Snapdragon 732G chip. In flagships like Xiaomi 13, Ultra UFS 4.0 can be hidden under heat pads.

🔧 How to find a memory chip when disassembling:

1. Remove the back cover (a suction cup and a plastic shoulder blade will be required).
2. Unscrew the screws holding the motherboard.
3. Look for a chip labeled KLMxG (eMMC, for example, KLMAG2JETD-B041) or THGxF (UFS, for example, THGBF7G9L4LBATR).

⚠️ Warning: When disassembling a phone to find a memory chip, turn off the battery (unplug the battery plume). Static electricity can damage the chips, and accidental circuiting can disable the board.

Logical structure of memory in MIUI: what partitions are and what are responsible for

Even if you have a single memory chip in your phone, the MIUI (based on Android) divides it into several logical partitions, which you can see through ADB or specialized applications like DiskInfo.

📌 Why is there less memory than indicated?

Manufacturers specify a decimal volume (1 GB = 1,000,000 bytes), while the system counts in binary format (1 GB = 1,073,741,824 bytes).

• 📱 System sections (/system, /vendor — before 8 GB).
• 🔄 Upgrades reserve (up to 1GB in some models).
• 🗑️ Hidden files MIUI (cache, logs - up to 500 MB).

💡

To see the real memory distribution, install the DiskInfo app from Google Play, which will show all partitions, including hidden ones, and their fullness.

How to check the type and amount of memory in Xiaomi without disassembly

You don't have to take your phone apart to find out what type of memory you have.

1.Across the Engineering Menu (CIT)

Enter the phone code in the application:

##4636##

Go to Phone Information and find the Storage Type bar, which will indicate eMMC or UFS with the version.

2.Used by the AIDA64 application

Download AIDA64 from Google Play, open Storage → Storage, and the Storage Type field will show the standard memory, and the Total size will show the actual size.

3. via ADB (for Advanced)

Connect your phone to your PC, enable debugging over USB (Settings → About Phone → MIUI Version → 7 times tap on version) and execute the command:

adb shell cat /proc/partitions

In the output, look for the mmcblk0 (eMMC) or ufs partitions.

⚠️ Attention: If in AIDA64 Or the engineering menu displays Unknown instead of the memory type, which could mean that the manufacturer has blocked access to the data, in which case only disassembly or contacting the service center remains.

What to do if Xiaomi doesn’t see internal memory SD-map

If your Xiaomi has stopped recognizing internal memory or microSD, the reasons could be both software and hardware.

🔧 Programmatic failures

Most often, the problem is solved without disassembly:

• 🔄 Reboot - clamping down on Power + Volume up for 10 seconds.
• 🛠️ Cache Clearing - Go to Settings → Memory. → Clear the cache.
• 📱 Resetting settings (without data loss) - Settings → System system → Resetting settings → Reset all settings.
• 💾 Formatting SD-maps – if the card is defined but not read, format it in FAT32 PC.

🔩 Hardware malfunctions

If the software methods did not help, the problem may be:

• 🔌 Oxidized microSD slot contacts (clean with alcohol).
• 🔧 Damaged plume (relevant for models with removable lid, for example, Redmi 9).
• 💥 Failed memory chip (requires replacement on the board).

🛒 Cost of repair:

• MicroSD slot replacement – from 800 ₽.
• Chip soldering eMMC/UFS — from 3 000 ₽ (model).

How to Free Your Memory from Xiaomi: Effective Ways

Even if your Xiaomi has 128 or 256GB of storage, it gets clogged over time. Here are 5 proven ways to free up space:

1.Cache and garbage cleanup

Go to Settings → Memory → Clean. You can delete:

• 🗑️ Application cache (up to several GB).
• 📁 Downloads (APK, file).
• 🎵 Unused media files (screenshots, duplicates).

Data transfer to SD-map

Not all apps support SD portability, but photos, videos, and documents can be moved to:

• 📁 Manually – through any file manager (e.g. Mi File Manager).
• ☁️ Automatically - Enable Settings → Google → Backup for photos.

3. Systemic debris disposal through ADB

For advanced users: connect your phone to your PC and do:

adb shell pm trim-caches 1G

This command will forcefully clear the cache of all applications.

4. Disabling unnecessary system applications

Some pre-installed MIUI applications (e.g. Mi Music, Mi Video) can be disabled:

1. Go to Settings → Applications → Application Management.
2. Select the unnecessary application → Disable.

5.Use of the function "Lite Mode"

Some models (Redmi Go, Poco C-series) have a Light mode that reduces memory consumption by simplifying the interface. Included in Settings → Special features → Lite mode.

💡

Regularly cleaning the cache and transferring media files to the cloud (Google Photos, Mi Cloud) can free up to 30% of memory without deleting important data.

Frequent questions about memory in Xiaomi (FAQ)