Combining a memory card with internal storage on Xiaomi Redmi 9C: the full guide

Owners of Xiaomi Redmi 9C Often, they face a lack of internal memory, especially if the model is purchased with a minimum volume (32 or 64 GB), the solution is to combine a microSD card with the main storage of the phone, a feature called Adoptable Storage (in Android) or memory expansion (in Android). MIUI), allow SD-It's a card as part of an internal drive, but it's a process that's nuanced, from choosing the right format to the risk of data loss.

In this article, we’ll explore the unique features of combining memory with Redmi 9C (model M2006C3LG), including the limitations of MIUI 12/13, compatibility with different classes of cards (UHS-I, A1/A2) and step-by-step instructions with illustrations, and learn how to return the card to its original state if something goes wrong, and why some applications (such as WhatsApp or games) may not be portable to the SD even after combining.

What is memory integration and why is it necessary for Redmi 9C?

Adoptable Storage (built into Android 6.0+) allows you to format your memory card as an internal storage, thereby expanding the amount of memory for installing applications. On Xiaomi Redmi 9C, this option is implemented through the Settings → Memory menu, but with reservations:

• 📱 MIUI Restricted selection: not all cards are supported (class required) A1 higher).
• ⚡ Speed of work: even after the merger SD-The card will be slower than the internal memory (especially noticeable in games).
• 🔄 Irreversibility: After formatting as internal memory, the card will not be used in other devices without completely erasing the card.

The main advantages of the Redmi 9C are:

• 🎮 The ability to install heavy games (such as Genshin Impact or Call of Duty Mobile) on the map.
• 📷 Automatically save photos/video from the camera SD (If selected in the camera settings).
• 📁 Porting some system applications (but not all) – see the Restrictions section).

⚠️ Note: If you use the card as a portable storage (for transferring files between devices), once combined, it will become associated with Redmi. 9C. Removing the card without canceling the memory expansion will lead to errors in the application!

Requirements for a memory card for Redmi 9C

Not every microSD is suitable for combining with Xiaomi Redmi 9C memory.

On the Redmi. 9C (with a MediaTek Helio processor G35) Not only is reading/write speed important, but also random operation performance (IOPS). Class cards A1 minimum 1500 IOPS, A2 — 4000 IOPS. This is critical for smooth operation of applications with SD. For example, PUBG Mobile on a Class card 10 (not-A1) It will slow down and A2 — launch.

How do you check the class of the card? The case should be marked:

• 🔢 C10, U3, V30 — Record speed (10, 30 MB/s, respectively).
• 🅰️ A1 or A2 — performance class for applications.

⚠️ Attention: Format maps NTFS or ext4 Not supported by Redmi 9C for association, if yours SD It is formatted in one of these formats, it will have to be reformatted with loss of data.

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Before buying a card, check it for counterfeit using the utility H2testw (Windows) or F3 (Linux/macOS). Many "brand" cards with AliExpress are fakes at an understated rate.

Step-by-step: how to combine a card with memory

The process consists of 3 steps: preparing the map, formatting through MIUI and configuring the data transfer. Follow the instructions carefully - errors at any step can lead to data loss!

Step 1: Preparation of a memory card

Before the merger:

1. Copy all important files from the SD to your computer or cloud (the card will be completely cleared).
2. Put the card in Redmi. 9C (squash SIM-Cards support microSD support + nanoSIM + nanoSIM or microSD + nanoSIM).
3. Restart the phone so that the system recognizes the drive.

Step 2: Formatting as an Internal Memory

Open Settings → Memory and perform the following actions:

1. Tap your name on it. SD-maps (e.g. SanDisk) 128GB).
2. In the upper right corner, press ⋮ → Storage settings.
3. Choose Format as Internal (or Expand Memory in newer versions of MIUI).
4. Confirm the action and wait until it is completed (may take 5-15 minutes).

Step 3: Transferring data and applications

After formatting:

1. The system will suggest transferring data – agree if you want to free up internal memory.
2. For manual application transfer: Go to Settings → Annexes → App management. Select an app (e.g. Facebook) → Warehouse → Change. → specify SD-map.

Some system applications (such as Mi Browser or Security) cannot be migrated, as this is a limitation of MIUI.

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Once combined, the card becomes invisible to other devices, and to use it again as portable storage, you need to unplug the memory expansion in the settings (with full formatting).

Limitations and problems after the merger

Even after a successful combination, you may encounter the following issues on the Redmi 9C:

• 🚫 Not all apps are portable: some games (such as Free Fire) or instant messengers (Telegram) block installation on the Internet. SD.
• 🐢 Slowdown: Map applications run 10 to 30% slower than internal memory.
• 🔌 Errors in retrieval: If you remove the card without canceling the expansion, the phone will give an error "Memory damaged".
• 📱 Problems after update MIUI: Sometimes after upgrading the system, the card "falls off" and requires re-formatting.

Solutions to typical errors:

⚠️ Warning: If after the combination, the phone started to brake very badly, check the card for fake. A2-The cards often have real speeds like Class 4, which is critical for Redmi. 9C budget-processor.

How to cancel the merger and return the card to its original state

If you decide to give up extended memory, follow the following steps:

1. Transfer all important data from the SD back to internal memory or to the PC.
2. Open the Settings. → Memory. → [Name of the map] → ⋮ → Storage settings.
3. Select Format as Portable (or Cancel Extension).
4. Confirm action. The map will be formatted in exFAT and made available to other devices.

Important: this process removes all data from the card! If you want to save files, copy them to another location first.

After the cancellation of the merger:

• 📲 The card will again be displayed as a removable drive in the File Manager.
• 🔄 Annexes to the Convention SD, They will stop working (they will have to be re-installed).
• 📊 Free internal memory of the phone (if the data was transferred back).

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If the card is not determined after canceling the merger, try formatting it on a PC using the SD Card Formatter utility (official software from the SD Association).

Alternative ways to expand memory on Redmi 9C

If card integration is not suitable (for example, due to slow SD or application incompatibility), consider alternatives:

• 🖥️ Transferring files to the cloud: 🅾️ Google Drive (15GB free). ☁️ Mi Cloud (5GB for Xiaomi accounts). 📦 Yandex Disk (10GB) when registering).
• 📁 Optimizing internal memory: Remove the app cache in Settings → Memory. → Clear. Transfer media files (photos, videos) to SD manually through the File Manager. Use Lite versions of applications (e.g. Facebook Lite).
• 🔧 Root access and Link2SD (For advanced users: Allows you to transfer applications to SD without formatting as internal memory requires unlocking the bootloader and installing Magisk (risk of loss of warranty!).

For the Redmi 9C with 2 GB of RAM, it is especially important to transfer media files (photos, music, videos) to SD without combining, which will free up internal memory for applications without sacrificing speed.

FAQ: Frequent questions about memory integration