Owners of Xiaomi Redmi 9 Pro smartphones often face a situation where the device starts to work slower and the free space in memory disappears rapidly. The main reason for this phenomenon is the accumulation of a large number of temporary files that create applications and the MIUI operating system itself in the process of work. This data, known as cache, is designed to accelerate the launch of programs, but over time their volume can reach tens of gigabytes, which negatively affects the performance of the gadget.
Cache cleaning is a safe and effective procedure that frees up valuable space and returns the phone to its previous sharpness. Unlike a full reset, deleting temporary files does not affect your personal photos, contacts or installed applications. In this article, we will discuss in detail all available cleaning methods for Xiaomi Redmi 9 Pro, from standard system tools to advanced tools for power users.
Regular maintenance of the device memory is an important part of the operation of any modern smartphone. Ignoring storage overflow can lead not only to brakes, but also to malfunction of some functions, for example, the inability to install updates or create new images. Let's look at what types of data can be deleted and how to do it as correctly as possible so as not to disrupt the stability of Android.
What is cache and why remove it on Redmi
Cache is a buffer memory that stores the temporary data needed to quickly access frequently used information. When you open an application for the first time, it downloads resources from the Internet or internal memory, and then stores copies of them in cache. When it starts again, the program reads data from this fast storage, which significantly reduces latency. However, if the cache grows uncontrollably, it begins to take up useful space that could be used for more important tasks.
On Xiaomi Redmi 9 Pro, crowded cache can cause problems ranging from long downloads of games to sudden drops of apps. This is especially true for social networks and browsers that accumulate huge amounts of graphic content. Clearing the cache helps eliminate software conflicts when old temporary files interfere with the correct operation of the updated version of the application.
What is the difference between cache and application data?
It's important to understand that cleaning the cache isn't a panacea for all troubles, but it's the first step in diagnosing performance problems. If the phone continues to function unsettled after the procedure, perhaps the reason lies deeper, for example, in a lack of RAM or hardware malfunctions. However, for the Redmi 9 Pro with its memory capacity, regular cleaning is an excellent prevention.
Use of the built-in "Security" application
The easiest and most reliable way to clear temporary files on Xiaomi devices is to use a pre-installed system application that is already optimized for working with the MIUI shell and securely deletes only those files that the system does not need. To start the procedure, look for an icon on the desktop called “Security” (usually green with a shield) and launch it.
In the app's main menu, you'll find a pie chart showing your current memory load. Click on "Clean" or "Accelerate" to start scanning. The system will automatically find debris, cache and unnecessary installation files. Once you've finished the analysis, you'll see a list of categories that you can delete. It's important to be careful and not confuse the cache with important documents.
☑️ Checking before cleaning
The Security app allows you to see in detail what exactly occupies space. You can select specific categories, such as App Cache or Ad Files, and remove them selectively. This gives you the flexibility to manage Xiaomi Redmi 9 Pro storage, allowing you to save what you need and get rid of what you need. Regularly using this tool helps keep the phone in optimal condition.
Manually cleaning the cache of specific applications
Sometimes you have to clean the cache of just one particular app that is not working properly or takes up too much space. In Android and MIUI, you can do this through your system settings. Go to the Settings menu, then select the Apps section and click All Apps. In the list that opens, find the desired program, such as YouTube or Instagram.
Inside the menu of the app you select, look for Memory or Storage, and you'll see two buttons: Clear Cache and Clear All (or Delete All). We need the first button for our task. Clicking Clear Cache will delete temporary files, but save your logins, passwords and settings inside the program, a secure operation that can be done regularly.
Pay particular attention to messengers and social networks, as they tend to inflate cache. For example, Telegram or Viber can store gigabytes of photos and videos viewed in temporary storage. In some cases, such as Telegram itself, it is more convenient to use the built-in cache cleaning settings inside the application itself, where you can automatically delete old files after a certain time.
⚠️ Warning: Don’t confuse the Clear Cache button with the Clear All button (Delete Data) and the second action will completely reset the app to factory status, removing your correspondence, authorization and local settings without the ability to restore it.
Cleaning through Recovery Mode
To clean the system more deeply, which is not available through the regular menu, you can use Recovery Recovery mode (Dalvik/ART cache, which accumulates during updates and app installations, is useful if the phone behaves strangely after a firmware update. MIUI. To enter this mode, you need to turn off Xiaomi Redmi 9 Pro fully.
After turning it off, press the power button and the volume button at the same time. Hold them until the Mi logo appears, then release the power button, but keep the volume up until the Recovery menu appears. In this menu, the volume buttons (up/down) and the power button (select).
The sequence of actions in Recovery:
1. Turn off the phone.
2. Clutch Volume Up + Nutrition.
3. Select Wipe Cache.
4. Confirm action.
5. Select Reboot.The cleaning process will take a few seconds, after which the system will suggest restarting the device, which is safe for user data, as it only affects system temporary files. However, if you have custom firmware installed or unlocked the bootloader, the menu may differ and you should proceed with increased caution.
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If the Recovery menu is in Chinese, navigate by: Wipe Cache is usually in the middle of the list, just below the language and return items.
Analysis of the space occupied in the vault
To understand what your Redmi 9 Pro’s memory is eating, it’s helpful to use the built-in storage analyzer, which shows the distribution of space into categories: apps, images, videos, documents and system files, and you can access it through Settings → About Phone → Memory or through the Explorer app in the Analyzer section.
Data visualization helps you quickly identify heavyweights, and it often turns out that most of the space is not taken up by cache files, but by forgotten WhatsApp videos or a series of high-resolution photos, and allows you to sort files by size to be the first to delete the largest ones, which is a more effective strategy than blindly cleaning everything.
| Type of data | Wherever | Can I remove it? | Impact on the system |
|---|---|---|---|
| Cash app. | Settings / Applications | Yes, it's safe. | Accelerates work, resets errors |
| Downloads (Downloads) | File manager | Yeah, unless you have to. | Frees up space for new files |
| System cache | Recovery mode | Yeah, in case of failure. | Solves problems after updates |
| Application data | Settings / Applications | No (no backup) | Complete reset of the application and settings |
Using the analyzer also helps to find duplicate files that often remain after transferring data from an old phone. Xiaomi Redmi 9 Pro has a powerful enough processor to quickly scan the storage and provide up-to-date statistics. Regular monitoring allows you to keep the situation under control and avoid critical overflow of memory.
Automation and third-party utilities
While embedded MIUI tools are usually sufficient, some users prefer to use third-party solutions for fine-tuning. Apps like Files by Google or SD Maid can offer more detailed analysis and the ability to customize the cleaning schedule. However, when installing such programs, it is important to prefer trusted developers to avoid compromising personal data security.
The built-in Extended Cleanup feature in the Security app also works automatically. It can remind you to clean up garbage when the volume of temporary files exceeds a predetermined threshold.
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Xiaomi’s built-in tools are optimized better than third-party counterparts, as they have deep access to the system and do not require additional permissions, which can reduce privacy.
Do not abuse the "accelerators" of memory (RAM Boosts that are constantly hanging in the background and trying to unload applications. In modern versions of Android, this often leads to the opposite effect: the system spends more resources on re-launching applications than on their background content. It is better to focus on cleaning up the permanent storage where the main debris accumulates.
⚠️ Warning: Avoid installing questionable Clearer or Battery Saver apps from unverified sources, often containing aggressive advertising, collecting user data, and may themselves be the source of junk files.