How to combine memory card and phone memory Xiaomi Redmi 7A

Owners of budget smartphones like the Xiaomi Redmi 7A often face a lack of free space to install new applications. Built-in 32 GB quickly fill up with system files, instant messenger updates and the cache of popular social networks. There is a natural desire to transfer all data to a microSD card and make the system perceive it as part of internal storage.

However, current versions of the MIUI shell and Android operating system have strict restrictions on working with external drives. You will not find a simple "Memory Combination" switch in the standard settings menu, since Google and Xiaomi consider the separation of storage safer for the stability of the device.

In this guide, we will discuss in detail all available methods: from standard application transfer to complex manipulations with the help of the user. ADB-You'll learn how to turn a regular flash drive into a full-fledged extension of the system, what risks such a procedure entails, and whether the game is worth the candle.

⚠️ Attention: You do all manipulation of memory partitions and system files at your own risk. Error when entering commands can lead to data loss or the need to flash the device.

Technical features of memory Redmi 7A

Smartphone Xiaomi Redmi 7A is built on the basis of the Qualcomm Snapdragon 439 processor, which has its own features of working with a memory controller. Standard configuration of the device offers 32 GB of internal memory, of which the user is available about 20-22 GB. The rest is reserved for system partition and recovery.

The memory card slot supports up to 256GB of storage, which is technically 8 times the storage capacity. However, by default, Android treats the microSD as a "portable storage" designed only for media files. The system does not allow applications to be installed there or stored without deep integration.

Internal memory (eMMC) is much faster than most budget microSD cards. It's important to understand that forced integration can slow down your phone if you use a slow flash drive. The system will start writing cache and temporary files there, which at low read/write speeds will cause the interface to "freeze."

• 📱 Internal memory is faster and more stable than any external card.
• 💾 Formatting a card with internal memory makes it unreadable on other devices.
• 🔋 Using external memory can slightly increase battery consumption.

For a comfortable post-merger experience, it is recommended to use UHS-I Class 10 or higher cards, and at such speeds, the performance difference will be minimal, and you can fully enjoy heavy applications.

Standard expansion methods without Root rights

The safest and most recommended method is to use the application portability feature available in MIUI. This method does not physically combine memory into one partition, but allows you to move the application body and some of its data to the map.

First, you need to format the memory card through the phone settings. Go to Settings. → The phone. → The vault, choose yours. SD-You can click on "Clean" or "Format." The system will suggest using the card as a portable storage device, OK. After formatting, the menu will see "Use as internal storage" (if this option is active in your firmware version).

If the standard unification button is not available, which is most common in global versions of MIUI, you can try to migrate each application individually. Go to Settings → Applications → All applications, select the desired program (for example, a game) and click on "Memory." If the "Move" button is active, the system will allow you to transfer data to the SD.

Unfortunately, many modern apps like WhatsApp or Telegram don’t allow their data to be fully transferred to an external medium through the standard menu, requiring direct access to internal partitions, which is blocked by Android’s security system.

⚠️ Note: Do not try to port the system applications of Google Play Services or MIUI System, this can lead to a cyclical reboot of the phone.

Using ADB for forced association

A more advanced method that doesn't require superuser rights (Root) but needs a computer. With the Android debugging bridge (ADB), we can force the system to consider the memory card internal, which works on most versions of Android 6.0 and higher.

First, you need to activate the developer mode. Go to Settings. → On the phone and press quickly 7-10 once under “Version” MIUI". You'll see a message saying, "You've become a developer." Then go to Settings. → Advanced settings → For developers and include "Debugging by" USB".

Connect your phone to your computer with a cable. The PC must have ADB drivers installed. Open the command line and type the following command to check the connection:

adb devices

If you have a device that's a device, you can go to memory manipulation, and we need to know your memory card ID.

adb shell sm list-disks

The system will give you a response in disk:179.64 (the numbers may differ), which is critical for the next steps.

Formatting the card as internal memory via ADB

Once we have the disk ID (e.g., disk:179.64), we can start the formatting process, and this command will completely destroy all the data on the drive and create partitions on it that are compatible with the Android system.

Enter the command by substituting your ID:

adb shell sm partition disk:XXX,XX private

Where XXX,XX is the number that you got in the previous step, and when you do that, you can have the phone hanging or flashing for a few seconds, and you're marking up, and you're setting the storage card to define it as "Internal Memory."

Critical point: if you take this card out of your phone after formatting, it won’t read anywhere other than this particular device, as the data will be encrypted with a unique key.

• 🔒 Data on the map is encrypted and linked to a specific smartphone.
• 🔄 When resetting the phone to factory settings, the data on the map can also be lost.
• ⚡ The speed of the system depends on the speed class of your microSD.

If the system says that the disk is busy, try first to delete existing partitions with the command adb shell sm destroy disk:XXX,XX, and then repeat the formatting procedure.

Method with Root Rights and Applications

For owners who are ready to unlock the bootloader and get superuser rights, the most flexible method opens up. Having Root access allows you to use specialized utilities such as App2SD or Link2SD, which create links to internal folders.

The procedure requires creating a second hidden partition on the memory card, which can be done through the SD Maid app or the standard Recovery menu (TWRP), and the map creates an ext4 or ext3 partition that Android sees as part of the system.

Once you install Link2SD and give it root permission, you select Auto-Link mode, and it will then move your system libraries and application data to the partition that you created, freeing up to 90 percent of your internal memory.

💡

Use memory cards from proven brands (Samsung, SanDisk, Kingston). Cheap Chinese counterparts often fail when system logs are written intensively, which is typical for internal memory mode.

The main disadvantage of this method is the need to unlock the bootloader. On a Xiaomi smartphone, this procedure is paid (formally) or requires waiting 168 hours (7 days) from the moment of binding the Mi Account.

⚠️ Warning: Unlocking the bootloader and obtaining Root rights cancels the warranty on the device and may make it impossible to use banking applications (Mir Pay, Sberbank) without additional dancing with a diamond (Magisk Hide).

Optimizing the system after integration

After you have successfully combined memory or migrated major applications, it is recommended to perform optimization. A crowded cache can slow down work even on extended memory. Regularly clean temporary files through a standard MIUI cleaner.

Also, reconfigure the default save paths for the camera and voice recorder. Go to the camera settings and select saving photos and videos on the camera. SD-This will prevent the remaining interior space from being quickly filled with heavy video files.

If you notice that your phone is running slower, check the speed of the card. Run a speed test (for example, through the A1 SD Bench). If the read speed has dropped below 10 MB / s, it is advisable to replace the drive with a more productive one, since the system constantly refers to it.

💡

Memory integration is a trade-off between volume and speed. For games and heavy applications, it's better to have less fast memory than a lot of slow memory.

In conclusion, the ADB method is the middle ground for the Redmi 7A: it does not require complex flashing, but gives a real result. Root method is suitable only for enthusiasts who are willing to sacrifice stability for maximum volume.

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