Smartphones series Redmi from the company Xiaomi deservedly enjoy enormous popularity due to the excellent price-quality ratio, however, even reliable devices with over time they begin to work more slowly. The main reason for decreased performance and periodic system freezes MIUI most often becomes full internal storage. When the free space runs out, the operating system Android stops managing files correctly, which leads to interface lags and long application launch times.
It is especially important for model owners to monitor the condition of the drive, since the basic versions of this device are often equipped with a limited amount of built-in memory. Proper and timely cleaning allows you not only to return the gadget to its former speed, but also to extend its active service life without the need to buy a new phone. In this article, we will examine in detail proven methods for removing excess junk, optimizing system processes and transferring data. Redmi 9 It is especially important to monitor the condition of the drive, since basic versions of this device are often equipped with a limited amount of built-in memory. Proper and timely cleaning allows you not only to return the gadget to its former speed, but also to extend its active service life without the need to buy a new phone. In this article, we will examine in detail proven methods for removing excess junk, optimizing system processes, and transferring data.
Before taking radical measures, such as a complete reset, it is worth trying less aggressive methods that will help free up several gigabytes of usable space. Regular maintenance The file system should become a habit for every user who wants to enjoy the stable operation of their device. Let's look at where exactly you need to start diagnostics.
Analysis of storage fullness through settings
The first and most logical step before starting any cleaning actions is an accurate assessment of the situation. You need to understand what exactly takes up the lion's share of the precious space on your Redmi 9. The system MIUI provides built-in data visualization tools that allow you to quickly identify the largest memory hogs. It often turns out that half of the space is occupied not by applications at all, but by forgotten videos or instant messenger caches.
To get detailed statistics, go to the settings menu and select the item responsible for managing the device memory. Here you will see a color chart where file categories are indicated in different shades: applications, images, videos, audio, etc. By clicking on any of the categories, you can get more detailed information and immediately proceed to deleting unnecessary objects. Visual analysis helps to avoid deleting important system files, since you see the real owner of the volume.
Be sure to pay attention to the “Other” category - often the remains of deleted apps or temporary update files are hidden there can be safely deleted.
It is worth noting that the standard analyzer may not show the exact cache size of some applications, since they store data in hidden directories. Therefore, after the initial inspection, it is recommended to use the specialized cleaning tool that comes with the shell. This will allow you to find hidden temporary files that are not displayed in general user data statistics.
⚠️ Attention: The settings menu interface may vary slightly depending on the version of MIUI firmware installed. If you do not find the described item, use the search in the settings by entering the keyword “Memory” or “Storage”.
Using the built-in application "Security"
Each smartphone Xiaomi has a pre-installed system application called "Security", which performs the functions of an antivirus and optimizer. This tool is the safest cleaning method for the average user, since it knows the system structure and will not delete anything critical for operation. Android. Running deep cleaning through this module is a standard maintenance procedure.
When you first launch the scanner, the system will analyze files for duplicates, temporary data, and advertising junk. Once the analysis is complete, you will be prompted to delete the found objects with one click of a button. It is important to understand that automatic cleaning only deletes the secure cache, but does not touch your personal photos or documents, which minimizes the risk of accidental loss of information.
In addition to the basic cleaning function, the Security application has a section for managing startup applications. Disabling unnecessary apps that start with the phone not only frees up RAM, but also reduces the load on the processor. This is especially true for the model Redmi 9which, despite good optimization, is not a flagship and is sensitive to background processes.
Regular use of the built-in optimizer helps keep the system in good shape. However, you should not fanatically run cleaning every hour, since the system also needs time to accumulate a useful cache, which speeds up the launch of frequently used apps. A reasonable balance between manual cleaning and automatic maintenance is the key to stability.
Cleaning cache and messenger data
The most voracious applications on any modern smartphone are instant messengers: WhatsApp, Telegram, Viber and others. They have a nasty tendency to save every picture, video, or voice message they receive to the device's memory, creating gigantic archives over months of use. Clearing this data can free up from 2 to 10 gigabytes of space, which Redmi 9 is a significant amount.
To clean it, you need to go to the settings of a specific application, find the “Data and storage” section and select the clear cache option. It is important to distinguish between the concepts of “cache” and “data”: clearing the cache is safe and will delete only temporary files, while resetting data will delete all correspondence and app settings. Junk files messengers are often dead weight and do not provide any benefit to the user.
☑️ Checking messengers
In some messengers, for example in Telegram, you can configure automatic cache deletion. This is a very convenient function that allows you to tell the system: “if the cache takes up more than 1 GB, delete old files.” This setting eliminates the need for regular manual audits and manual monitoring of memory fullness.
⚠️ Attention: Before clearing messenger data, be sure to create a backup copy of your correspondence in cloud storage (Google Drive or iCloud) so as not to lose important contacts and message history.
Deleting duplicates and large files
During the active use of a smartphone, many duplicates of the same photos, downloaded files and application installation packages (APK) accumulate in the memory. Users often forget that they have already downloaded a file, or save the same picture several times. Finding and deleting such copies is an easy way to regain free space.
To search for duplicates, you can use the built-in file manager MIUI or third-party analyzer applications. They scan the storage using file hashes and find exact copies, even if they are named differently or are located in different folders. Duplicate files can take up a significant amount of space, especially when it comes to high-definition videos.
You should also pay attention to the “Downloads” folder (Download), where installers of applications that have been installed for a long time and are no longer needed often accumulate. Deleting APK files is safe because they are only installation packages and not the application itself. Checking this folder regularly should become a good habit.
How to find hidden large files?
In the file manager, select sort by size. Files larger than 100 MB usually immediately pop up at the top of the list. Often these are forgotten films, archives or offline maps of the navigator.
Transferring photos and videos to the cloud
Multimedia content (photos and videos) traditionally takes up the most space on a smartphone. Considering that modern cameras shoot in high definition, a minute of video can take up tens of megabytes. It is impractical to store the entire media library on the built-in drive, so the best solution is to transfer the archive to cloud storage. Redmi 9 is impractical, so the best solution is to transfer the archive to cloud storage.
The Service Google Photos is installed on all devices by default Android and offers a convenient “Free up space” function. After your photos are synced to the cloud, the application will offer to delete their local copies from your phone. This allows you to have access to all photos via the Internet without them occupying the physical memory of the gadget. Cloud technologies solve the problem of lack of space in the most elegant way.
An alternative can be other cloud services, such as Yandex.Disk, Dropbox or proprietary cloud Xiaomi Cloud. Their operating principle is similar: you upload files to the server, and leave only thumbnails on your phone or delete the originals. It is only important to remember that you need an Internet connection to view such photos.
| Service | Free volume | Features | Integration |
|---|---|---|---|
| Google Photos | 15 GB (shared with mail) | Smart search, excellent compression | Built into the system |
| Xiaomi Cloud | 5 GB | Deep integration with MIUI | System gallery |
| Yandex.Disk | 10 GB | Unlimited for photos from mobile | Separate application |
| TeraBox | up to 1 TB | Large volume, but there are ads | Separate application |
Removing unused applications and games
Applications and games are another category that requires regular revision. We often install apps "one time", play a new game for a week, and then forget about them, leaving them to take up space. On budget models, such as Redmi 9, every hundred megabytes counts, so ruthless removal of unnecessary software is necessary.
Go to the application settings and sort the list by size or date of last use. If you haven't opened the app in the last month, you probably don't need it. Modern games can weigh 2-3 gigabytes, and the presence of a couple of such “dead souls” can critically affect system performance. Uninstallation heavy games are the fastest way to get a lot of free space.
It is also worth paying attention to the pre-installed applications that often come bundled with the firmware. Not all of them can be removed completely, but many can be “Disabled”. This will hide the application from the menu and prevent it from running in the background, effectively removing its impact on the system, although the disk space may remain occupied.
Removing heavy games and applications that you do not use gives an instant boost to free memory and often solves the problem of lack of space for updates.
Using a microSD memory card
The model Xiaomi Redmi 9 is equipped with a separate slot for microSD memory cards, which is an excellent solution for expanding storage. If the built-in memory of 64 or 128 GB is absolutely not enough for you, buying a high-quality memory card will be the ideal way out of the situation. This allows you to transfer all media content and some applications to external media.
After installing the card, it is recommended to configure the phone so that all new photos and videos are saved to it. In the camera settings, select the memory card as the main storage. Also, many file managers allow you to transfer existing folders with media files in the internal storage to an SD card, freeing up the system partition.
However, it is worth remembering that memory cards are slower than the built-in flash memory of a smartphone. Therefore, installing heavy games or system applications on them is not always advisable - they may run with delays. The ideal use of microSD is storing photos, videos, music and documents.
⚠️ Attention: When formatting a memory card for internal storage (if such an option is available in your version of Android), the data on it will be encrypted and will not be read on other devices without a reset. Use this mode with caution.
Frequently asked questions (FAQ)
Is it possible to delete the Android folder on Redmi 9?
It is strictly not recommended to delete the Android system folder completely, since it stores the data of all installed applications. Removal will lead to incorrect operation of apps. You can clear only the contents of the Cache subfolder inside it, but it is better to do this through standard cleaning tools.
Why does the memory fill up on its own after cleaning?
The operating system Android and applications constantly create new temporary files, caches and logs for their work. This is a normal process. If the memory fills up too quickly, check if any messenger automatically saves all incoming media files and limit this function.
How to transfer applications to a memory card on Xiaomi?
In modern versions of MIUI and Android, the ability to completely transfer applications to an SD card is often limited by developers. You can try to find the "Move" button in the settings of a specific application, but this function is not available for most system apps. It is better to transfer only photos and documents to the card.
Does full memory affect the charging speed?
Memory does not have a direct effect on the rate of energy flow, but full storage forces the processor to work more actively with the file system, which can cause the device to heat up. In this case, the system can artificially limit the charging current to protect components, which visually looks like slower charging.