Installation of applications on the memory card Xiaomi Redmi 7A

Owners of budget smartphones such as the Xiaomi Redmi 7A often face a critical shortage of internal storage, the basic version of the device offers only 16 or 32 gigabytes, of which the system occupies a significant part, which leads to the inability to install new programs, updates to messengers and games, which significantly limits the functionality of the gadget.

Fortunately, the case design includes a microSD card slot. However, standard Android settings and MIUI shells often don’t allow you to simply transfer cache or executable program files to external storage. System constraints are designed to protect the stability of work, but they can be bypassed by turning the flash drive into a full-fledged extension of internal memory.

In this article, we will take a look at all the available methods of memory expansion. We will look at the regular shell features, hidden ADB functions and the nuances of working with superuser rights. You will learn how to format the drive correctly and avoid common errors that can lead to data loss or a decrease in the speed of your smartphone.

Features of memory Xiaomi Redmi 7A and MIUI

The Redmi 7A is based on a Qualcomm Snapdragon 439 processor that technically supports Adoptable Storage. This technology allows the system to perceive a microSD card as part of an internal drive. However, Xiaomi in its MIUI shell often hides or completely blocks this feature in the standard settings menu, so that users do not use slow memory cards, which could cause interface lags and complaints about the device.

The device's internal memory is divided into system partition and user partition. When the user partition is overflowing, the phone starts to run slower because the system lacks space for temporary files and cache. Expanding memory becomes not just a convenience, but a necessity for comfortable use of the device in 2026 and beyond.

⚠️ Warning: Before any manipulation of memory partitions, be sure to back up important photos and documents. The process of formatting the memory card will result in the complete deletion of all data on it.

It’s important to understand the difference between a regular drive and internal storage. A regular flash drive runs slower than an embedded eMMC or UFS chip. If you transfer heavy applications to a cheap card, they can run longer. Therefore, it’s recommended to use UHS-I or UHS-II cards from trusted manufacturers like Sandisk or Samsung for the expansion procedure.

Preparation of the memory card for use

The first step is to physically install and initially set up the media, insert the microSD card into the smartphone tray using a special paper clip, make sure the device is turned off or at least the screen is turned off during the tray removal to avoid damaging the contacts, and once turned on, the phone should automatically identify the new media and suggest that it be configured.

The standard procedure is to use the card as Portable Storage, which is a mode where you can store photos, music and video, but you can't install applications there by standard means. For our purposes, this mode is not suitable, but it is necessary for the initial check of card health. If the system can't see the card, try to clean the contacts with a pin or check the work on another device.

There is a nuance with the file system. Android prefers ext4 or f2fs format for internal partitions, while external cards are often formatted in FAT32 or exFAT. When you activate the Device Memory function (which will be discussed below), the system itself will suggest reformatting the map. Formatting will create a new partition structure encrypted specifically for this smartphone. It will be impossible to use this card on other devices or computers without re-formatting.

Activation method through the hidden menu of the developer

In some versions MIUI, redmi-mounted 7A, You can activate the application port function without using a computer, and you need to enable developer mode. → On the phone and press quickly 7-10 once under the heading “Version” MIUI". You will be told that you have become a developer.

Next, find a hidden setting that enforces support for external drives as internal. Go to Settings → Advanced Settings → For developers. In the list, look for the option “Force allow apps on external storage.” Activating this switch can add a “Change” button to the memory management menu of the card.

However, it is worth noting that even after this option is enabled, the port button of a particular application may remain gray (inactive), depending on how the application developer prescribed its manifest, and some system services and banking applications prohibit moving to external media for security reasons.

Using ADB for Forced Transfer

The most reliable way to run on 99% of Xiaomi Redmi 7A devices, regardless of the firmware version, is to use USB debugging and a computer. You will need to download the Platform Tools (ADB) package on your PC and smartphone drivers, which allows you to send a hidden command to the system, making it consider the card as internal memory.

First, turn on USB debugging in the developer menu. Connect your phone to your computer with a cable. Open the command line in the ADB folder and type in the link check command:

adb devices

You'll see a request for debugging permission on your smartphone screen, confirm it, then you'll need to know your memory card ID.

adb shell pm get-configured-diskids

If the card is already inserted but not formatted as internal, the system may give an empty answer or ID, in which case the command is used to format.

adb shell pm set-install-location 2

This command changes the default setup priority to an external drive, however, a full partition merge (Adoptable Storage) often requires a command:

adb shell sm set-force-adoptable true

Once you've done that, restart your device. Go to the storage settings. You should have the option to format the map as internal storage. Partition merge will allow you to install applications directly onto the flash drive, and the system will consider them its own.

⚠️ Attention: Teams ADB It requires precision, it's a syntax error or it's a misuse. ID The disk may cause the wrong drive to format. Check the output of commands carefully before entering them.

Transfer applications without root rights

If you don’t want to use a computer or complex commands, you can try a standard port if it’s available in your version. MIUI. Go to Settings. → Annexes → All applications. Select the program you want from the list. If you can transfer it, you'll see an active memory or storage button, inside of which there'll be a move to the SD-map".

Many users wonder why the port button is inactive, and it's related to the Android architecture. Since version 6.0, Google has allowed developers to decide whether to port their product. Many modern applications, especially those that use widgets, background services and notifications, require internal memory to work smoothly.

💡

Use the Files by Google app or Xiaomi’s built-in Explorer to move heavy media files (photos, videos, documents) to the memory card manually, which will free up precious space in the internal storage for cache applications that cannot be moved.

There are also some helper utilities that try to get around the limitations by creating symbolic links, but on Redmi 7A without root rights, their effectiveness is low, and the best strategy is to transfer media files to the card manually and use ADB to system-combination memory if standard methods don't work.

Problems and Errors Solving in Installation

During operation, there may be situations when applications from the memory card stop running or are not working correctly, often because the memory card has been removed or damaged. Android is very sensitive to the integrity of the external storage file system, especially if it is formatted as an internal one.

One of the common problems is that the interface is slow after a large number of applications have been migrated, which indicates that the card reading speed has dropped or is not up to the requirements. In Task Manager, you may notice that the sdcard process or the associated service consumes a lot of CPU resources when trying to read data.

💡

If the phone is slow after porting the apps or if there are “Application not installed” errors, try formatting the card again or replacing it with a faster model (Class 10 UHS-I and higher).

There is also a possibility of a “Not enough space” error, even if there are several gigabytes of free space on the card, which may be due to fragmentation of the file system, and it is recommended to defragment periodically (through special applications on the PC) or simply transfer the data to the computer, format the card to full zero and configure again.

FAQ: Frequently Asked Questions