How to use SD-Map as internal memory of Xiaomi Redmi 7A: full guide 2026

Xiaomi Redmi 7A is one of the most popular budget smartphones with limited internal memory (16 or 32 GB), with active use of applications, photos and video, this space is short, the solution is to convert a microSD card to internal memory through the Adoptable Storage feature in Android. However, on Redmi 7A, this process has nuances, from choosing a compatible card to possible failures after formatting.

In this article you will find step-by-step instructions with illustrations, a comparison of the speed of cards of different classes, as well as solving typical errors (for example, when the system does not see). SD-We tested the method on firmware. MIUI 10/11/12 And we found key differences in smartphone behavior. 7A — Read on to avoid common mistakes.

Why? SD-A card as an internal memory is not always a good idea.

Before you start setting up, it’s important to understand the limitations and risks of this solution. Adoptable Storage (the built-in Android formatting of SD as an internal drive) has several critical drawbacks:

• 🔄 Slowdown: Even class maps A1/A2 into 3–5 times slower than the built-in memory of eMMC. Applications will be longer to open, and games – slow down.
• ⚠️ Incompatibility with some applications: banking programs (SberBank, Tinkoff), games with protection (PUBG, Genshin Impact and instant messengers (Telegram, WhatsApp) may refuse to work with external memory.
• 🔌 Device binding: Once formatted, the card will not be read on another phone or PC without completely erasing the data.
• 📉 Depreciation of the card: frequent overwriting of data (cache, temporary files) reduces the life of the microSD by 2-3 times.

In practice, Redmi 7A It works best with maps. UHS-I U3/A2 volume 128 GB: More capacious maps (256–512 GBs may be undecided or unstable due to the limitations of the memory controller in a budget smartphone. If your goal is to store photos, music or videos, it is better to leave them alone. SD-map as a portable storage (without formatting).

⚠️ Attention: After conversion SD-All data on the internal memory will be permanently deleted. Back up important files to your PC or cloud before starting the procedure.

What are they? SD-Cards are suitable for Redmi 7A: speed and compatibility tests

Not all microSD cards work equally well in internal memory. 7 popular models on Redmi 7A firmware MIUI 12.5. Results (read/write speed in the MB/s) tabled:

The best choice for Redmi 7A is cards marked A2 (application optimized) and write speeds of at least 80 MB/s. Class A1 cards or unlabeled cards will be slower, which will lead to delays when you start programs. Also avoid cards larger than 128 GB – the smartphone may not recognize them as internal memory due to firmware limitations.

Step-by-step instructions: how to do SD-memory-card

The procedure takes 5-10 minutes. Make sure that:

• 🔋 Battery charge of at least 50%.
• 📱 The latest version is installed on the smartphone MIUI (Check in the settings → The phone. → Updating the system).
• 💾 SD-The card is formatted (if previously used).

Follow the instructions:

1. Put it in. SD-slot card (on Redmi) 7A It is located under the lid next to SIM-map).
2. Open the Settings → Memory.
3. Slip on the item SD-card (or Memory Card).
4. In the upper right corner, press three dots (⋮) and select Storage Settings.
5. Choose internal memory (or format as internal memory).
6. Confirm the action by pressing Erase and format.
7. Wait until the process is completed (it can take up to 5 minutes).
8. After restart, go to Settings. → Memory and check that SD-The card is displayed as part of the internal storage.

Backup card data | Charge phone to 50%+| Update MIUI to the latest version | Check card compatibility (A1/A2)

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If the card is not defined as internal after the reboot, try:

• 🔄 Remove and repaint the map.
• 📱 Restart your phone to Safe Mode (hold the power button) → Restarting in Safe Mode).
• 🔧 Reset the settings to factory (extreme case).

⚠️ Attention: On some firmware MIUI 10 The option of formatting as internal memory may not be available, in which case update the system or use an alternative method via ADB (described below).

Alternative method: formatting via ADB (for power users)

If the standard method doesn’t work, you can use the command ADB (Android Debug Bridge), which requires connecting the phone to a PC and basic knowledge of working with the command line.

What you need:

• 🖥️ Computer with Windows/Linux/macOS.
• 🔌 USB-cable (preferably original).li>
• 📦 Installed drivers ADB Fastboot (you can download from the official Android website).
• 📱 Included debugging by USB on the phone (Settings) → The phone. → Version. MIUI → 7 times to tap the version number → return to additional settings → For developers → Debugging by USB).

Instructions:

1. Connect Redmi 7A to your PC and select File Transfer mode.
2. Open the command prompt (Windows) or terminal (Linux/macOS) and type:

adb devices

If the device is determined (the serial number will appear), continue:

adb shell sm list-disks

Remember the disk identifier (e.g., disk:179.64).

adb shell sm partition disk:179,64 private

Replace 179.64 with your ID, and once you've completed the command, the phone will restart, and SD-The card will become an internal memory.

How to transfer applications to SD-map

Even after the transformation SD-Not all applications are automatically transferred to the internal memory of the card. To make room in the internal memory, do the following:

1. Open Settings → Applications → Application Management.
2. Select the app you want to migrate (like Facebook or YouTube).
3. Slip on Warehouse.
4. Click Change and select SD-map.
5. Confirm the transfer (may take a few minutes).

Please note that:

• 📱 Not all applications support portability (e.g. system utilities or high-demand games).
• 🔄 After updating the application, it can automatically return to the built-in memory.
• ⚠️ Some programs (such as Google Play Store) will not work with the Internet. SD-map.

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To speed up the work of applications with SD-maps, disable animation in the developer settings (Settings) → Additionally. → For developers → Scale of animation: Off.).

Typical problems and their solutions

Redmi users 7A Often encounter the following errors in use SD-maps as internal memory:

If after all the manipulations SD-The card is unstable, return it to portable storage mode:

1. Go to Settings. → Memory. → SD-map.
2. Press three points (⋮) → Storage settings.
3. Select Portable Storage → Format.

⚠️ Note: If after formatting as internal memory, the phone starts to reboot frequently, this may indicate a malfunction of the memory controller.

FAQ: Frequent questions about use SD-maps 7A

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Use of the SD-Cards as internal memory on Redmi 7A It is only appropriate for storing applications with low requirements (social networks, messengers, media files). For games and system programs, it is better to expand the internal memory through cloud services or a physical replacement of the module (in the service center).