How to add memory to Xiaomi phone: everything from microSD to cloud

Smartphone memory shortages are a problem faced by every second Xiaomi owner: high-resolution photos, heavy gaming, app cache and system updates eat up gigabytes in a matter of months. But don't rush to buy a new phone: 90% of memory can be expanded without drastic measures.

In this article, we will discuss all the available ways to increase memory on Xiaomi, Redmi and POCO devices – from classic memory cards to little-known MIUI chips. You will learn what method is right for your model, how to avoid formatting errors, and why it is sometimes better not to save on a memory card.

We’ll focus on the hidden MIUI settings that optimize existing memory without buying additional accessories, and for those who are ready to upgrade, we’ve prepared a table for the compatibility of microSD cards with popular Xiaomi models of recent years.

Before you start, check how much memory is actually occupied on your device. Go to Settings → About Phone → Storage. If less than 10% of the total is free, it’s time to act.

1. MicroSD Memory Cards: How to Select and Install

The most obvious way to expand memory is to use a microSD card, but there are nuances: not all Xiaomi models support this format, and the wrong choice of card can lead to brakes or data loss.

The first thing to do is check for a memory card slot in your model. Modern flagships (for example, Xiaomi 13 Pro or Redmi Note 12 Pro+) often do not have it, but most budget and mid-budget devices (POCO X5, Redmi 10C).

If there is a slot, pay attention to the card speed class:

• 🔹 Class 10 / UHS-I (U1) — minimum for everyday tasks (photos, music, documents)
• 🔹 UHS-I (U3) / V30 — optimally for recording video in 4K heavy-play
• 🔹 A1/A2 — especially for applications (accelerates their work from the card)

⚠️ Note: MicroSDXC cards (over 32 GB) require exFAT formatting or NTFS. Some older Xiaomi models (before 2018) may not support exFAT – check this out before buying.

After installing the card, the system will offer two use cases:

1. Portable storage – files are saved manually to the map
2. Internal memory – the card is formatted and becomes part of the system (applications can be transferred to it)

The second option is more convenient, but it has risks: if the card fails, you lose all data, and not all applications work correctly with "mounted" memory.

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Before formatting the card as internal memory, back up your important data, and after the procedure, all the files on it will be erased.

2.Inline memory optimization: hidden MIUI functions

Before you spend money on a memory card, try to make room right now with the built-in MIUI tools. Many users don't know what the system can do:

• 🧹 Automatically clean the cache of applications
• 🗑️ Remove duplicate photos and videos
• 📦 Compress rarely used files
• 🔄 Transfer media files to the cloud without loss of quality

To start a deep cleanup, go to Settings → Memory → Cleanup. Here the system will analyze the device and prompt you to delete:

Application cache (can release up to 3-5 GB)


- Uploaded files from messengers




- Unused APK-files




- Empty folders and temporary files

Important point: the Deep Cleanup feature in MIUI 14+ is able to find and delete residual files from long-deleted applications that take up to 1-2 GB of space.

Another useful tool is Light Mode (Settings → Special Options → Light Mode), which not only simplifies the interface, but also disables background processes that eat up memory.

3. Transfer of applications to a memory card: step-by-step instructions

If you format a card as an internal memory, you can transfer some of the applications to it.

• ❌ Not all applications support portability (especially system applications)
• ❌ Some games can slow down when working with a card
• ❌ After the map is extracted, the transferred applications will stop working.

To move the application:

1. Open Settings → Applications → Application Management
2. Select the desired application and click Storage
3. Click Change and select a memory card.
4. Confirm the transfer (may take a few minutes)

Check the card speed class (minimum UHS-I U1)

- Make a backup copy of important data

Charge your phone at least 50%

- Disable battery optimization for portable applications-->

Please note that some applications (such as WhatsApp or banking programs) cannot be ported for security reasons, and it is not recommended to transfer launchers and widgets, this can lead to system failures.

⚠️ Warning: If the app starts to slow down after the transfer, return it to internal memory. Some programs (especially games) require high read/write speeds that not all memory cards can provide.

4.Cloud Storage: Xiaomi Cloud vs Google Drive vs Yandex Disk

If physical memory expansion is not possible (e.g., Xiaomi 12T Pro doesn’t have a microSD slot), consider cloud storage.

To automatically upload photos to Xiaomi Cloud:

1. Open the Gallery app
2. Go to Settings → Backup
3. Enable the Autoboot option and select quality
4. Specify which network to download (only Wi-Fi is recommended)

Tip: If you take a lot of pictures in RAW format, set up automatic download of originals to the cloud, and leave only optimized versions on your phone. This will save up to 50% of space.

5. Alternative methods: OTG-drives and network disks

If your Xiaomi model supports OTG (On-The-Go), you can connect an external drive via a USB-C → USB-A adapter.

• 📸 Photographers who work with large volumes RAW-file
• 🎮 Gamers installing heavy games (up to 100 GB)
• 📽️ Video editors editing projects directly on the phone

To connect:

1. Buy it. OTG-adapter (stands) 100-300 ruble)
2. Connect a flash drive or external HDD (preferably with your own power)
3. In the file manager (Conductor) select an external drive
4. Copy or move the required files

OTG limitations:

• ⚠️ Not all files can be opened directly from an external drive.
• ⚠️ The speed of the work depends on the version USB (USB 2.0 vs USB 3.1)
• ⚠️ Some models require manual mounting of the drive

For advanced users, there is another option – network storage (NAS). You can configure access to a home PC or router with support USB-For example, Xiaomi Mi Router routers can distribute files over a local network.

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OTG-drives are suitable for temporary memory expansion, but do not replace the built-in or microSD card.

Radical measures: replacement of internal memory

If all of the above methods don’t work, and the phone supports memory replacement (which is extremely rare for modern Xiaomi), you can consider a hardware upgrade.

Warnings:

• ⚠️ It voids the warranty.
• ⚠️ Requires soldering equipment and skills
• ⚠️ Risk of damaging the motherboard
• ⚠️ The new memory must be fully compatible with the model.

Replacement process (simplified):

1. Purchase a compatible memory chip (e.g. eMMC 5.1 128GB for Redmi Note 4X)
2. Remove the back cover and battery
3. Unfilter the old memory chip from the motherboard
4. Install a new chip and solder it.
5. Switch your phone with a new amount of memory

The cost of such an upgrade in the service center will be 3,000-8,000 rubles (depending on the model and the amount of new memory), self-replacement without experience is fraught with complete failure of the phone.

7 How to Avoid Memory Problems in the Future

To avoid memory shortage, follow the following simple rules:

• 📱 Remove the app cache once in a while 1-2 month
• 📸 Automatically upload photos to the cloud
• 🎮 Clean the folder regularly Android/obb/ from unnecessary game files
• 📂 Use the file manager to find large files (Settings) → Memory. → Files)
• 🔄 Update. MIUI — New versions optimize memory management

To clean automatically, set up Smart Cleanup (Settings → Memory → Auto Cleanup) and the system will delete unnecessary files when the memory is filled to a critical level.

If you install/remove applications frequently, turn on the Clean Up When Deleted option (Settings → Memory → Cleanup settings) to delete all application-related files, not just APKs.

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Regular memory cleaning not only frees up space, but also increases the speed of the phone. MIUI automatically defragments the memory when cleared, which speeds up access to files.

FAQ: Frequent questions about memory on Xiaomi