How to Expand Your Internal Memory on Xiaomi: A Complete Guide with Step-by-Step Instructions

Xiaomi’s internal memory ends unexpectedly quickly: high-resolution photos, app cache, system updates and a couple of heavy games — and now the inscription “Memory is full” appears. Especially acute is the problem with budget models Redmi and POCO with 32-64 GB of storage, where the system is allocated to 10-15 GB, and the user is left with crumbs. But do not rush to buy a new phone: there are at least 5 ways to expand memory, and most of them do not require root rights or complex manipulation.

In this article, we’ll look at all the current methods, from the banal transfer of files to a memory card to hidden MIUI functions that will free up gigabytes of junk data. Special attention will be paid to the unique feature of Xiaomi firmware: the Memory Extension feature, which converts part of RAM into virtual storage – this works even on models without a microSD slot. You will also learn how to safely clean the system of unnecessary files without deleting important data, and which applications should be moved first.

Importantly, not all methods are equally effective. For example, memory cards are suitable for storing media files, but slow down applications, and cloud services require a stable Internet. We will honestly tell you about the pros and cons of each option so that you can choose the best one for your model – whether it is Xiaomi 13 Ultra with 512 GB of memory or Redmi Note 10 with 64 GB.

1.Using a microSD memory card: pros and pitfalls

The most obvious way to expand memory is to install a microSD card. Most Xiaomi smartphones (except the flagship Mi and Xiaomi 12/13) support cards up to 1TB, but there are nuances:

• 📱 Model compatibility: Check if your phone has a microSD slot. 11T Pro and POCO F4 No support for expansion, but Redmi Note 11 supports.
• ⚡ Speed of operation: Applications need a class map UHS-I (U3) or A2 — Otherwise they'll slow down.
• 🔄 Formatting: The card is better formatted as internal memory (via phone settings), but then it can not be removed without data loss.

How to install a memory card:

1. Insert microSD into the slot (some models will require a tray for the slot to be used). SIM-map).
2. Go to Settings → Memory → SD card.
3. Select “Configure as internal memory” (for applications) or “Portable storage” (for photo/video).
4. Confirm the formatting (all data from the card will be deleted!).

⚠️ Note: If you set up the card as internal memory, it will not be used on other devices without full formatting, and some applications (such as WhatsApp or banking) may refuse to work with microSD for security reasons.

2. the function "Memory Extension" (Memory Extension) - a virtual drive from RAM

Starting with MIUI 12.5, Xiaomi has added a unique feature, Memory Extension (in Russian firmware can be called “Memory Extension”), which allows you to convert 1-3 GB of RAM into virtual storage, which the system uses for cache and temporary files. This will not replace physical memory, but will help avoid errors “Insufficient memory” when you start applications.

How to turn on:

1. Open Settings → About Phone → Memory (or Settings → Additional → Memory on older versions of MIUI).
2. Slip on "Memory Extension" (or "RAM + ROM").
3. Select the amount of RAM to convert (recommended 2 GB for performance balance).
4. Reboot the phone.

Efficiency of the method:

• ✅ Suitable for models without a microSD slot (e.g. Xiaomi 12 Pro or XP). POCO F5).
• ❌ Does not increase the physical space for installing applications or storing files.
• ⚠️ May slightly reduce performance when multitasking (if you allocate too much RAM).

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If after turning on Memory Extension, the phone began to slow down, reduce the amount of virtual memory to 1 GB or turn off the function altogether.

3. Internal Memory Optimization: What Can Be Safely Deleted

Before you expand the memory, you have to free up the existing memory, and MIUI accumulates a lot of unnecessary files that can be deleted without risk to the system.

Pay special attention to the MIUI folder in the root directory, which stores backups, system logs and temporary update files, which can be manually deleted through any file manager (for example, Files by Google), but do not touch the folders:

• Android - system data;
• DCIM – photos and videos;
• Alarms, Ringtones are sound files.

⚠️ Note: Do not use “deep cleaning” in third-party applications (such as CCleaner or CCleaner). SD They can delete important files. MIUI, This will cause a camera, theme or system sounds to fail.

Delete the application cache | Check the Download folder | Find and remove duplicates photo | Clean up garbage through Settings | Check the MIUI folder for unnecessary files-->

4.Moving applications to a memory card or cloud

If you use a memory card internally, you can migrate some of the applications to it, but not all programs support this feature, especially for system applications and high-demand games (such as Genshin Impact or Call of Duty Mobile).

How to move applications:

1. Open Settings → Applications → Application Management.
2. Select the application you want to transfer.
3. Click on “Storage” → “Change” (if the option is active).
4. Select a memory card and confirm the transfer.

An alternative way is to use cloud storage:

• 🌥️ Google Photos: Automatic download of photos / videos in original quality (up to 15 GB free).
• ☁️ Mi Cloud: Built-in cloud from Xiaomi (5 GB for free), syncs contacts, notes and photos.
• 📁 Dropbox/OneDrive: Convenient for documents and backups (up to) 2–5 GB free).

Important: When using cloud services, turn off automatic download over the mobile network so as not to waste traffic. To do this, go to the application settings (for example, Google Photos) and select “Only via Wi-Fi”.

5. Factory reset: a radical but effective method

If all other methods did not work, and the phone is full of undeleteable files (for example, after multiple MIUI updates), you can reset to factory settings, which will delete all data, but return the phone to “clean” state, freeing up to 5-10 GB of memory.

How to reset:

1. Back up important data (contacts, photos, messages) through Settings → About Phone → Backup.
2. Go to Settings → About the phone → Reset settings.
3. Select “Erase All Data” (not to be confused with “Reset Settings”, which does not delete files!).
4. Confirm the action and wait for the reboot.

After discharge:

• ✅ Install only the necessary applications (avoid junk programs).
• ✅ Turn off auto-update apps in Google Play (settings) → «Auto-update of applications» → «Never»).
• ✅ Use lightweight alternatives to heavy apps (like Facebook Lite instead of the main Facebook).

⚠️ Note: Resetting won’t help if the memory is clogged with system files (e.g. firmware) MIUI In this case, only unlocking the bootloader and removing unnecessary software through the ADB, But it requires technical skills.

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Factory reset is a last resort, but it is guaranteed to free up memory by removing accumulated digital debris, use it if other methods have failed, and remember to back up!

6. Alternative methods: OTG-drives and network storage

If your Xiaomi supports OTG (On-The-Go), you can connect an external drive, such as a flash drive or a hard drive, which will not expand internal memory, but will allow you to store large files (movies, backups) without using a microSD.

How to connect the OTG-drive:

1. Buy it. OTG-Adapter (e.g. Xiaomi) USB-C to USB 3.0).
2. Connect the USB flash drive or HDD to the adapter and the adapter to the phone.
3. In the file manager (Files or Mi Explorer) will appear a new section "USB-drive".
4. Move unnecessary files (such as movies or archives) to the site.

For permanent access to files, you can configure Network Storage (NAS):

• 🖥️ Connect the external disk to the router with USB-port (for example, Xiaomi Mi Router) 4A).
• 📡 Set up access over the local network through the router application.
• 📲 In your phone, use a file manager with support SMB (For example, Solid Explorer).

The advantages of OTG and NAS:

• ✅ No limit on the volume (can be connected) HDD 1-2 TB).
• ✅ Files are available on multiple devices.
• ❌ Requires additional devices (adapter, router, disk).

7 Hidden MIUI features to save memory

MIUI has a few little-known features that help save space:

• 📸 Compression photo: In the camera, turn on "Save in format" HEIF» (Camera settings → Photo format. Photos will weigh 2 times less without loss of quality.
• 🎵 Streaming Music: Instead of downloading songs, use Mi Music or Spotify in streaming mode.
• 📱 Light versions of applications: B MIUI There are built-in "light" versions of Facebook, Messenger and other programs. Install them through Settings. → Annexes → Light applications.
• 🔄 Cleaning for low memory: Enable the option in Settings → Memory. → Autoclean so that the system itself deletes unnecessary files.

Another lifehack is to disable pre-installed applications that cannot be removed:

1. Go to Settings → Applications.
2. Select an unneeded app (such as Mi Video or Mi Browser).
3. Click “Disable” (this will remove the updates and stop the background work).

FAQ: Frequent questions about memory expansion on Xiaomi