How to combine phone memory and memory cards on Xiaomi Redmi Note 7: full analysis

Xiaomi Redmi Note 7 is still one of the most popular budget smartphones due to balanced performance and support for updates. However, 64 or 128 GB of internal memory over time cease to seem sufficient — especially if you actively shoot 4K video, install heavy games or store large media libraries. The solution seems obvious: buy a microSD card and expand memory. But how to make the system perceive it as part of internal storage, not as a removable drive?

In this article, we will discuss all ways to combine memory on Redmi Note 7 (codename lavender), including official features. MIUI You will learn which memory cards support Adoptable Storage (received by Android as “internal storage”), how to avoid data loss when formatting, and why it is sometimes best to leave it alone. SD-And also, why on some firmwares, this feature can suddenly disappear after an update.

Why can’t you just put a memory card in and use it?

Many users mistakenly think that simply inserting a microSD into a Redmi Note 7 slot will automatically start using it as part of the main memory.

• 📱 Standard mode: The card is displayed as a removable drive (for example, /storage/1234-5678). Applications are installed in internal memory by default, and SD You can only transfer files manually.
• 🔄 Adoptable Storage Mode: The map is formatted as internal storage (section) ext4), It's a system that integrates memory, but it's a mode that has limitations (about them below).
• ⚠️ Limitations MIUI: Starting with MIUI 12, Xiaomi simplified the interface and hid some settings, including memory integration.On new firmware, the feature may not be available without workarounds.

The main problem is performance. Even the fastest microSD UHS-I Class 10 runs 5-10 times slower than the internal memory of eMMC 5.1 in Redmi Note 7. If you move applications to it, they will run longer, and games can slow down. So combining memory is only useful for storing media files, not for installing software.

⚠️ Note: If you use a memory card as an internal storage device, it cannot be extracted and read on another device without formatting.

What memory cards are suitable for combining?

Not every microSD is suitable for Adoptable Storage mode, but here are the key requirements:

For the Redmi Note 7, you should choose a card marked A2 (Application Performance Class 2). Such drives are optimized for working with applications and have a random read/write speed of at least 4000/2000 IOPS.

• 💾 SanDisk Extreme A2 (90 MB/s)
• 💾 Samsung EVO Plus A2 (100 MB/s)
• 💾 Kingston Canvas Go! Plus (170MB/s)

Avoid cheap no-name cards: they often have low real speeds and can lead to system freezes when you work hard. Before buying, check reviews on AliExpress or Amazon – they often test real speed using CrystalDiskMark.

The official method: Adoptable Storage in MIUI

If your Redmi Note 7 runs MIUI 10–11, you can use the built-in memory merge feature. On newer versions (MIUI 12+), this menu item is often hidden, but it can be returned (more on this in the next section).

The following is the MIUI 10/11 step-by-step instruction:

1. Insert the memory card into the slot (supported hybrid SIM - the second slot can be used either under the second SIM or under the microSD).
2. Go to Settings. → Memory.
3. Tap your name on it. SD-maps, for example, SD-map: 128GB).
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 formatting (all data on the map will be deleted!).
7. Wait until the process is completed (it can take 5-15 minutes).

Once you restart, the system will merge the memory. → You will see the total memory (e.g., internal memory: 128GB) + 64GB). There are nuances, however:

• 📲 Applications will be installed in internal memory, but they can be transferred to the internal memory. SD manually through settings → Annexes → [Select an application] → Warehouse → Change.
• 📷 Photos and videos will be saved to combined memory by default.
• ⚠️ Some system applications (such as Mi Video or Mi Music) may not work properly with files on the computer. SD.

⚠️ Attention: If you extract SD-If you combine the card, the phone will stop loading or it will constantly give out errors. To get it back, you will have to reset the settings to the factory).

How to return Adoptable Storage to MIUI 12/13/14?

Starting with MIUI 12, Xiaomi simplified the interface and removed the ability to format SD-The card is like internal memory through standard settings, but the function is still in the system, it's just hidden:

Method 1: Through ADB (without root)

This method works on all versions of MIUI and does not require superuser rights.

• 🖥️ Computer with drivers installed ADB (You can download it on Android. SDK or through Minimal ADB and Fastboot).
• 📱 Initiated Debugging Mode USB on the phone (Settings) → The phone. → Version. MIUI — Tap 7 times, then go back to Settings → Additionally. → For developers).
• 🔌 USB-cable (preferably original).

Instructions:

1. Connect the phone to the PC and confirm the debugging permission.
2. Open the command line (cmd) and enter:

adb shell


sm list-disks

You'll see something like this. disk:179,64 is your ID. SD-map.

1. Enter the command to format (replace 179.64 with your ID):

sm partition disk:179,64 private

If the command runs smoothly, restart the phone. The card will be formatted as internal memory.

Method 2: Through the Settings Editor (requires root)

If you have root rights, you can enable the hidden option through the system settings editor:

1. Install Activity Launcher from Google Play.
2. Find your storage settings (com.android.settings.Settings$StorageDashboardActivity) in it.
3. Start the activity and select yours. SD-map.
4. In the menu (three dots) will appear the item Format as internal.

Both methods have risks: if you don’t execute the instructions correctly, the phone may stop seeing the card or give out errors; if you are not sure about your actions, it is better to use alternative methods (about them below).

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Before execution ADB-teams, check that on SD-The map has no important data. Adoptable Storage formatting deletes all files without any recovery.

Alternative ways to expand memory

If a formal memory pool is not available or suitable, consider these options:

1. Manually transfer applications to SD

Even without memory consolidation, you can transfer individual applications to the map:

1. Go to Settings → Applications.
2. Select the app you want (like Facebook or Spotify).
3. Slip the vault. → Change. → SD-map.

Limitations:

• ❌ Not all apps support portability (like WhatsApp or Mi Fit won’t let you do it).
• ❌ System applications cannot be moved.
• ❌ After updating the application, it can automatically return to internal memory.

2. Use Link2SD (requires root)

Annex Link2SD It allows you to create symbolic links (symlink) to SD-a card for individual parts of applications (such as cache or data) that reduces the load on internal memory, but requires:

• 🔧 Root-right.
• 💾 Sections ext2/ext3/ext4 on SD-Map (you can create using MiniTool Partition Wizard on PC).

3. Cloud storage with offline cache

Services like Google Photos, Mi Cloud or Yandex Drive allow you to automatically upload photos and videos to the cloud, and leave only a preview on your phone.

1. Open the app and go to Settings → Free up space.
2. Choose High Quality (unlimited storage) or Source Quality (considered within Google Drive quota).
3. Enable the option to Remove copies from the device after download.

The downside is that you'll need the Internet to browse the originals, but that'll eliminate the need to constantly clean the memory manually.

4. OTG connection

If you have USB-storage SSD, You can connect it through OTG-Adapter and use as additional storage. Redmi Note 7 supports USB OTG "It's going to be faster than a microSD, but it's going to be removable.

Frequent problems and their solutions

When you combine memory on the Redmi Note 7, users encounter typical errors.

If the phone starts to overheat or discharge faster after memory is combined, it is most likely the fault of a cheap microSD. Check its temperature through the AIDA64 application (Sensors section). The normal temperature of the card under load is up to 45 ° C. If higher, replace the drive.

⚠️ Attention: On some firmware MIUI When you combine the memory, Mi Drop stops working, and it's a well-known bug that can only be fixed by rolling back the firmware or resetting the settings.

Should I combine memory on the Redmi Note 7 in 2026?

Let's be honest: Redmi Note 7 was released in 2019, and over 5 years, the approaches to memory management have changed.

Pros:

• ✅ Increased space for media files (photos, videos, music).
• ✅ Ability to store backup copies of applications (APK + data).
• ✅ Cheaper than buying a phone with more internal memory.

Cons:

• ❌ Decrease in performance when installing applications on SD.
• ❌ Risk of data loss in crashes (memory cards are less reliable than eMMCs).
• ❌ Limitations MIUI (For example, the inability to transfer certain applications).
• ❌ Compatibility issues after system updates.

An alternative approach is to optimize current memory:

• 🧹 Clean the cache regularly through Settings → Memory. → Clean up.
• 📂 Transfer heavy files (movies, archives) to your PC or cloud.
• 🎮 For games, use Google Play Games with streaming (no installation required).
• 📱 Install lighter versions of apps (e.g. Facebook Lite instead of the main Facebook).

If you’re critically short of space, consider buying a phone with a lot of internal storage (like the Redmi Note 12 with 256GB). Combining memory on the Redmi Note 7 is a temporary solution, not a panacea.

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Memory integration is only useful for storing media files, and for applications and games, it is better to use internal memory or cloud services.

FAQ: Answers to Frequent Questions