Smartphone Redmi 9A is one of the most popular budget devices on the market, but its basic configuration often becomes a bottleneck for heavy users. Built-in storage of 32 GB or 64 GB is sorely lacking when installing modern applications, instant messengers and accumulating photos. When the internal memory is full, the system starts to slow down, and attempts to take a new photo may fail due to lack of space.
Fortunately, the operating system Android in the shell MIUI provides many built-in tools for managing space without requiring complex technical knowledge. In this article, we will look at proven ways to free up gigabytes, ranging from simply clearing the cache to transferring data to external media. You will learn to identify hidden junk files and optimize the operation of the device so that it “breathes” deeply again.
Analyzing the fullness of the storage and searching for hidden files
Before deleting anything, you need to understand exactly what your storage space is full of. internal memory. Often, users delete a few photos, thinking this will solve the problem, while forgotten videos or social media caches take up gigabytes. Owners Xiaomi Redmi 9A should use the standard “Cleaning” tool, which deeply scans the system for temporary files.
Go to the application Security, which is preinstalled on each device in this line. Select item Cleaning and wait for the analysis to complete. The system will show not only obvious junk, but also duplicate photos, old APK installer files and unused packages. Pay special attention to the “Deep cleaning” section - heavy files from messenger folders that you haven’t even opened are often hidden there.
Sometimes the problem lies in system errors in space accounting. If after cleaning the memory indicator still shows critical capacity, try rebooting your device. This action updates the file indexing and can free up space that the system erroneously thought was occupied. For advanced users, it is possible to view the folder structure through the file manager.
Periodically check the “Download” folder - documents and pictures from the browser are often saved there, which you forget about, but which take up valuable space.
It is important to distinguish between the concept of “occupied by the system” and “occupied by the user.” In the storage settings you can see a detailed breakdown by category. If the “System” section takes up an abnormally large amount of space (more than 10 GB on an empty phone), this may indicate a failure of updates or the accumulation of error logs, which can also be safely deleted through the developer menu or special utilities.
Clearing the application cache and messenger data
The largest consumer of space on any modern smartphone is social networks and messengers. Applications like Telegram, Viber i WhatsApp save every photo and video you watch to local memory, creating giant archives. On Redmi 9A with its limited storage capacity, this becomes a critical problem after just a few months of active use.
To solve this problem, it is not necessary to delete the application itself. Just go to the settings of a specific service. In Telegram, for example, there is a built-in function for automatically clearing the cache. Go to Settings → Data and memory → Memory usage and set the cache retention period, for example, 3 days or 1 week. This will allow the application to store data only for the last period, automatically deleting the old one.
- 🗑️ Clear the cache through the Android settings:
Settings → Applications → All applications → [Select an application] → Memory → Clear cache. - 📸 Disable autosaving to the gallery for photos and videos from messengers so that they are not duplicated in the system.
- 📂 Use the built-in cleaning tools inside the messengers themselves (the “Storage” section in the chat settings).
For WhatsApp the procedure is slightly different, since there is no such flexible cache configuration. You'll have to manually delete files through the file manager or use the Manage Storage feature within the app itself. There you can select specific chats that take up the most space and delete media files selectively, saving text correspondence.
☑️ Weekly memory hygiene
⚠️ Attention: When clearing application data (not only the cache, but specifically “Data”), you will lose all correspondence history and settings within this application. Be extremely careful and select the “Clear cache” item.
Transferring photos and videos to a MicroSD memory card
One of the main advantages of the model Redmi 9A is the presence of a separate slot for a memory card MicroSD. This physical storage expansion is the most reliable way to increase your available storage without losing important data. You can transfer your entire media library to external media, freeing up internal memory solely for operating the system and installing applications.
First, you need to format the card correctly. Insert the drive into the slot, wait for the notification and go to Settings → About phone → Storage. Select your SD card and click "Format". The system will offer to use the card as portable storage or as internal memory. For Redmi 9A it is better to select the “Portable storage” option in order to be able to easily remove the card and read it on the computer.
| Data type | Recommended storage location | Impact on speed |
|---|---|---|
| System applications | Internal memory | High speed |
| Photos and Videos | Memory card (SD) | Does not affect the operation of the OS |
| Music and Movies | Memory card (SD) | Depends on the card class |
| Messenger cache | Internal memory (according to default) | Fast media loading |
After preparing the card, set the camera to save pictures directly to it. Open the application Camera, click on the menu icon (three bars) in the corner of the screen and find the “Save to SD card” item. Activate this switch. Now all new pictures and videos will be automatically recorded to external media without taking up a single byte in the internal storage.
Using a high-quality UHS-I (Class 10) memory card ensures that high-resolution video recording will not be interrupted due to low recording speed.
To transfer existing files, use a standard one conductor File Explorer. Select the folders DCIM and Pictures, click “Move” and select the root directory of your SD card. This process may take some time depending on the amount of data, so make sure you have enough battery power.
Removing unused applications and system updates
Budget devices often come pre-installed with many apps that the owner never uses. Not only do these apps take up space, but they can also run in the background, consuming CPU resources. Regular audit of installed software is a mandatory procedure for maintaining health Redmi 9A.
Go to section Settings → Applications → All applications. Sort the list by size or date of last use. Android 10 and above (on which MIUI for this model is based) often highlights applications that have not been opened for a long time. Feel free to delete games that you do not play and services that you do not use.
Particular attention should be paid to system updates. Sometimes after a major OS update, old installer files remain in memory. Although the system usually removes them itself, a manual check will not hurt. It is also worth checking the folder MIUI at the root of the internal memory - there may be logs and topics that are no longer needed.
What to do with system applications?
Some system applications (for example, “Music”, “Video”, “Compass”) can be disabled if you do not use them. Go to the application settings and click "Disable". This will hide the icon and stop updating the component, but will not completely remove it, which is safe for the system.
If you installed applications from third-party sources (APK files), make sure that the installation files themselves are deleted. They often accumulate in a folder Download or in a special folder in the browser. One installation file can weigh 100 MB, and if ten of them have accumulated, you are wasting a whole gigabyte of space uselessly.
Using cloud storage to offload the device
The modern approach to memory management involves the use of the “cloud”. Instead of storing thousands of photos on the phone's physical chip, it makes more sense to upload them to remote servers. This not only frees up space, but also serves as an additional copy of your data in case your smartphone is lost or broken.
The service Google Photos is integrated into Redmi 9A by default. Set up high-quality synchronization (it's often free and unlimited, although conditions may vary). Once your photos are uploaded to the cloud, use the Free Up Space feature in the Google Photos app. It will automatically delete from the device those pictures that are already safely stored on the Internet.
- ☁️ Set up automatic photo uploading to Google Drive or Yandex.Disk for documents and work files.
- 🎵 Use streaming services for music instead of storing MP3 files locally.
- 📹 For video, use YouTube (download available via link) or specialized video hosting sites.
It is also worth considering the possibility of using cloud services to backup contacts and messages. This allows you, in case of a factory reset, not to worry about losing data, knowing that everything important is in a secure digital storage that can be accessed from any device.
⚠️ Attention: The conditions for free storage in cloud services may change. Always check your current data plan and available space in your Google account or other service so that synchronization does not stop unexpectedly.
Factory reset as a last resort
If none of the above methods helped free up enough space, or if the system is unstable due to data fragmentation, there is a radical but effective method - a hard reset. This procedure will return your Redmi 9A to the "as from the store" state, deleting absolutely all user data and applications.
Before starting the procedure, it is critical to create a full backup. Use the built-in application Mi Cloud or connect your phone to your computer and copy all important files manually. Remember that after the reset, it will be impossible to restore the data without a preliminary copy.
To perform a reset, go to Settings → About phone → Reset settings. Select "Erase all data". The phone will ask for confirmation and a password for your Mi account to protect against theft. The process will take a few minutes, after which the device will reboot and offer the initial setup.
After returning to factory settings, do not rush to install all applications in a row. Install only the essentials and immediately set up saving data to an SD card or to the cloud. Such a “clean start” often works wonders for the performance of budget smartphones, eliminating system errors accumulated over years of use.
Frequently asked questions (FAQ)
Is it possible to transfer the applications themselves to a memory card on Redmi 9A?
In modern versions of Android and MIUI, transfer is possible applications on the SD card is limited by the developers of the applications themselves. Most apps do not support this feature. However, some system utilities allow you to force some data to be transferred, but this can lead to unstable operation of the app. It is better to store only media files on the card.
Why is space not freed up after deleting files?
Most likely, the deleted files ended up in the “Trash” inside the Gallery or File Manager application. They continue to take up space until you empty the trash completely. It is also possible that the file is still being used by some process in the background - in this case, rebooting the phone will help. Is it safe to use cleaner apps from the Play Market? Third-party apps often display intrusive advertisements and can themselves consume a lot of resources. It is recommended to use standard system tools.
Is it safe to use cleaner apps from the Play Market?
Most third party cleaners Redmi 9A are redundant since MIUI already has a powerful built-in cleaning tool. Third-party apps often display intrusive advertisements and can themselves consume a lot of resources. It is recommended to use standard system tools.
How to find out which folder takes up the most space?
You can use the “Explorer” application and sort folders by size, or install a specialized utility for disk visualization (for example, DiskUsage), which will show a visual memory map in the form of squares.
Does memory fullness affect the speed of the phone?
Yes, the effect is critical. When free space is less than 10-15% of the total volume, the speed of writing and reading data drops, the system begins to slow down, and applications may crash. Maintaining free space is the key to fast work Android.