Smartphones of the series Redmi 9A are deservedly popular due to their affordable price and reliability, but over time, even the most productive device can start to work slower. One of the most common reasons for slow performance is the accumulation of temporary files that the system and applications save to speed up loading content. This process is inevitable: every time you view a feed on a social network or edit a photo, traces of your activity remain on the disk.
Regular clearing the cache becomes not just a useful habit, but a necessity for maintaining stable operation of the operating system MIUI. Many users mistakenly believe that deleting this data will result in the loss of important information, but in fact the cache is just a temporary buffer that can be safely deleted at any time. Understanding the difference between system files, application data and temporary cache will allow you to properly manage your device without the risk of losing contacts or correspondence.
In this guide, we will analyze in detail all the available methods for optimizing memory on your Xiaomi Redmi 9A. We will look at both the system's built-in tools and manual methods for removing garbage from specific apps that consume the most resources. You will learn to distinguish useful data from digital junk and will be able to return your smartphone to its former response speed.
What is a cache and why does it slow down the Redmi 9A
A cache is an area of RAM or permanent memory designed to store intermediate data that the processor needs quick access to. When you launch an application for the first time, the system has to load all its resources from the main storage, which takes time. When you restart, some of this data is already in cache memory, thanks to which the app opens almost instantly. However, over time, the size of these temporary files can reach several gigabytes, creating an unnecessary load on the memory controller.
On budget devices such as Redmi 9A, the amount of internal memory is often limited, and an overflow of the cache section leads to noticeable interface slowdowns. The system begins to spend more time indexing files and searching for free space, instead of performing useful user tasks. This has a particularly critical effect on the operation of heavy applications, such as browsers with dozens of open tabs or graphic editors.
It is important to understand that not all cache is equally harmful. There is the concept of a “clean cache”, which really speeds up work, and a “dirty cache” containing outdated or broken files that only interfere with processes. Algorithms cleaning in modern versions Android they have become smart enough to automatically delete unnecessary things, but manual control still remains the most effective way to maintain order.
The browser cache often takes up the most space, as it saves copies of all the pages and images you view so that they can be loaded quickly in the future.
If you notice that the phone starts to heat up when idle or applications crash for no apparent reason, this is a sure sign that the file system needs revision. Ignoring these symptoms may lead to more serious software failures that require a full factory reset. Regular maintenance of the drive extends the life of the device and maintains its liquidity in the secondary market.
Using the built-in "Security" application
The easiest and safest way to free up space on Xiaomi Redmi 9A is to use a pre-installed utility from shell developers MIUI. This application, often called "Security" or "Security", is integrated deeply into the system and has access to all the necessary directories for proper cleaning without the risk of damaging system files. You can launch it through the shield-shaped icon on the desktop or by finding it in the general list of apps.
After launching the utility, the system will automatically scan the device for junk files, duplicates and unnecessary installation packages. .apk. The analysis process usually takes from 10 to 30 seconds, depending on the number of installed applications and the amount of stored data. Upon completion of the scan, you will be asked to delete the found objects by pressing one button, which is extremely convenient for inexperienced users.
☑️ Check before cleaning
The function Clearing garbage in this application works comprehensively: it deletes not only the application cache, but also the remains of uninstalled apps, empty folders and advertising files. However, you should be careful when using the cleaner's advanced settings, as there may be hidden options to remove large files or rarely used apps that you may have planned to use later. Always check the list of files marked for deletion before the final confirmation.
⚠️ Attention: The built-in cleaner sometimes marks messenger caches as “garbage”, where important media files from conversations can be stored. Before cleaning, make sure that the necessary photos and videos are saved in the gallery.
For more in-depth settings, you can go to the section Security → Cleaning → Settings, where you can set an automatic cleaning schedule or exclude certain folders from scanning. This allows you to configure the system so that it maintains itself in the background without distracting the user. Regular use of this tool is a basic rule of digital device hygiene.
Manually clearing the cache of individual applications
Sometimes global clearing does not solve the problem with a specific frozen application, and then targeted intervention is required in it settings. In the operating system Android each application stores its data in an isolated directory, which can be accessed through the phone's settings menu. This method is especially effective for social networks and instant messengers, which tend to accumulate gigabytes of temporary data in a short period of time.
To perform this procedure, go to menu Settings → Applications → All applications. In the list that opens, find the problematic app, for example Telegram or YouTube, and click on it. In the management menu that opens, select Storage, where you will see a detailed breakdown of the used space into the categories "Application Data" and "Cache".
Pressing a button Clear cache will only delete temporary files without affecting your logins, passwords and settings inside the app. This is completely different from the "Clear data" button, which will return the application to the state immediately after installation, removing all your history and authorization. Be extremely careful not to confuse these two functions unless you want to re-configure each service.
Why is the cache growing so fast?
Apps like TikTok or Instagram constantly download the video stream. To avoid downloading the same video twice when scrolling back, they save it in a cache. If you watch a lot of content, this buffer can grow to 1-2 GB in a couple of days.
For some applications, such as the browser Chrome, clearing the cache through the phone settings may be less effective than using the built-in tools of the browser itself. In such cases, it is better to go to the settings inside the application and find the “History” or “Privacy” item, where you can choose to delete only cached images and files. This approach gives the user finer control over what exactly is deleted.
| Application | Type of data in the cache | Recommended cleaning frequency | Risk of data loss |
|---|---|---|---|
| Browser (Chrome) | Copies of web pages, images | Once a week | Low (form autofill only) |
| YouTube | Video thumbnails, stream buffer | Once a month | None |
| Telegram | Photos, videos, stickers from chats | As filled | Medium (needs network access to re-upload) |
| News feed, stories | Once every two weeks | Low | |
| Maps (Google Maps) | Map fragments, search | Rarely | Medium (loss offline maps) |
Systematically checking the storage of the heaviest applications allows you to keep free disk space under control. On Redmi 9A with its modest amount of internal memory, such discipline is key to comfortable use. Do not forget that after clearing the cache, the application may work a little slower for the first few seconds until it forms a new data buffer.
Clearing the cache through the Recovery mode
If the smartphone is unstable, freezes on the screensaver, or standard cleaning methods do not help, you can use the recovery mode Recovery Mode. This method allows you to clear the cache partition of the entire system (Dalvik/ART Cache), which often solves problems that arise after a failed firmware update or installation of incompatible software. This is a deeper level of maintenance that requires care when performing actions.
To enter recovery mode on Xiaomi Redmi 9A you must completely turn off the device. Then hold down the Volume Up button and the Power button at the same time. Hold them down until the logo Miappears, then release the power button, but continue to hold the volume down until the menu Main Menuappears. Navigation in this menu is carried out with the volume buttons, and the selection is confirmed with the power button.
Wipe Cache Partition does not delete your personal files, photos or contacts. This is a safe procedure that affects only system temporary files.
In the menu, select Wipe Data, and then go to option Wipe Cache. Please note: do not select the "Wipe All Data" option, as this will completely reset the phone to factory settings, erasing all user information. After confirming the operation, the system will clear the system cache and you can reboot the device by selecting Reboot → Reboot to System.
⚠️ Attention: The Recovery interface may differ depending on the MIUI version. If you only see the “Reboot” and “Connect with Assistant” items, then your firmware version does not support clearing the cache completely through this menu without unlocking the bootloader.
This method is especially relevant when the phone behaves strangely after an over-the-air update. The system cache may contain conflicts between the old and new versions of the software, and forcing it to clear forces the system to rebuild the optimized files from scratch. The first boot process after such a procedure may take longer than usual - this is normal.
Deleting residual files and ad cache
Even after using standard cleaning tools, so-called “tails” may remain on the device - folders from deleted applications and advertising junk. On Android many apps create their directories in the root of the internal memory or in the Android/datafolder, which are not automatically deleted when the software is uninstalled. These files can take up a significant amount of space, especially if you often install and test new games or utilities.
To manually check these directories, you can use any file manager, for example, the built-in Explorer or advanced solutions like Total Commander. Go to the root directory of the internal drive and look for folders with the names of deleted applications or strange character sets. If you are sure that the corresponding app is no longer needed, you can safely delete such a folder.
Particular attention should be paid to the folder Android/obbwhere the cache files of heavy games are stored. If you delete a game, but the folder with its name remains, it can take up several gigabytes of space. Also, advertising junk often accumulates in folders with the names of advertising networks, such as admob or unity3d, which some free applications create.
Before deleting folders from the root memory, make a copy of them to your computer or cloud drive. If after uninstalling an application stops working, you can easily restore files.
There are specialized utilities for finding duplicates and empty folders that can automate this process. However, on budget devices like Redmi 9A installing additional heavy cleaners can be counterproductive, since they themselves consume resources. It is better to spend 10 minutes manually inspecting the file system once every few months than to keep a background parasitic service in mind.
Prevention and setting up automatic optimization
In order not to return to the issue of clearing the cache Redmi 9A too often, it makes sense to configure the system for automatic maintenance. The shell MIUI offers flexible tools for this, allowing you to set the conditions under which the phone itself will get rid of garbage. This eliminates the need for the user to constantly monitor the memory status and reduces the risk of critical disk fullness.
In the Security application, in the cleaner settings section, you can activate the Auto Cleanup function. Here you can set the frequency (for example, once every 3 days) and trigger conditions, such as battery level or connection to a Wi-Fi network. It is also useful to enable memory full notification so that the system warns you in advance when free space reaches less than 10%.
Another effective prevention method is to limit background activity for rarely used applications. In the battery settings, you can prevent certain apps from running in the background, which will not only save battery, but also reduce the amount of cache they generate. For social networks that you rarely use, this is an ideal solution.
The secret of memory longevity
Try not to fill the phone's internal memory to capacity. Flash memory runs slower and wears out faster when less than 15-20% of the space is free. Always leave a small reserve.
⚠️ Attention: The interface and names of menu items may vary slightly depending on the MIUI version and regional firmware of your Redmi 9A. If you do not find the described setting, check the "Advanced settings" section.
Regularly rebooting the smartphone also helps clear RAM and terminate frozen processes, which can indirectly affect cache entries. The habit of rebooting your phone at least once a week helps keep your system in good shape and prevents the accumulation of minor software errors. When combined with clearing the storage, this gives the best result for the device's performance.
Frequently asked questions (FAQ)
Will clearing the cache delete my photos and contacts?
No, clearing the cache only affects temporary application and system files. Your personal data, such as photos, contacts, messages and files in your Downloads folder, will remain completely safe. However, it is recommended to always have a backup copy of important data in case of unforeseen failures.
Why did the phone become slower after clearing the cache?
This is a temporary phenomenon. After deleting the cache, applications must reload the necessary resources and create new temporary files the first time they are launched. This may take a little more time and CPU resources. Usually, the speed is restored after a few minutes of active use.
How often should you clear the cache on Redmi 9A?
The optimal frequency depends on the intensity of use of the smartphone. With active daily use, it is recommended to carry out a complete cleaning every 1-2 weeks. If you use your phone moderately, it is enough to do this once a month or when signs of low memory appear.
Is it possible to completely disable cache creation on Android?
It is impossible to completely disable caching in the Android system without obtaining root access and deep modification of the system, which is not recommended for ordinary users. The cache is necessary for applications to run quickly. Attempts to disable it will lead to a significant slowdown of the smartphone and increased traffic consumption.
Is it safe to use third-party cleaning applications (Clean Master and analogues)?
Most modern versions of Android have built-in effective cleaning tools, so there is no need for third-party apps. Many of these apps themselves consume a lot of resources, display intrusive ads, and may collect user data. The built-in MIUI tool is quite enough for safe optimization.