Clearing the cache on Xiaomi Redmi 9T: a complete guide

Performance problems and accumulation of temporary files

Over time, any Android-based smartphone begins to work slower, and Redmi 9T is no exception. The main reason for the drop in performance lies in the accumulation of a huge number of temporary files that applications create during their operation. This data, known as cache, is intended to speed up the loading of content, but if it is in excess, it only takes up precious space in the internal memory and can cause software crashes.

Users often notice that popular instant messengers or social networks take longer to open than usual, and the system periodically slows down when switching between tasks. This is a sure sign that the clipboard is full of outdated information that the system does not have time to process correctly. Regular clearing the cache becomes necessary to maintain stable operation of the device, especially if you have a model with a limited amount of built-in storage.

Unlike a full reset, deleting cached data is a safe procedure that does not affect your personal photos, contacts or installed apps. You simply free up space from “digital junk”, allowing the processor Snapdragon 662installed in the Redmi 9T to work more efficiently. Next, we will look at all the available ways to perform this procedure, from standard settings to advanced methods.

Using the built-in Security application

The easiest and most accessible way to clean up the memory of your smartphone is to use the pre-installed utility from Xiaomi. The shell MIUI (or HyperOS in new updates) contains a powerful optimization tool that automatically scans the device for unnecessary files. To start the process, just find an icon with the name Security on the desktop and launch it.

After opening the application, the system will prompt you to press the big green button to start scanning. The algorithm will analyze the memory state, identify outdated installer packages, advertising junk and, of course, the application cache. The process usually takes no more than 30 seconds, after which you will see a detailed report on how much space can be freed up. Pressing the button Clean will instantly delete the found temporary files.

⚠️ Attention: The built-in scanner sometimes marks as “garbage” files that you might otherwise have saved, such as thumbnail images from WhatsApp. Before total cleaning, carefully review the list of categories so as not to accidentally delete important thumbnails.

For deeper work with memory in the “Security” application, there is a separate section Cleaning. Here you can selectively delete data from specific folders, such as Large Files or Unused Applications. This allows for targeted management without affecting system processes that require a cache to function correctly.

Manual cleaning cache of specific applications

Sometimes general clearing does not solve the problem if a specific application, for example YouTube or Telegramhas grown to gigantic proportions. In such cases, it is necessary to manually clear the cache for each problematic app separately through system settings. This method gives you complete control over what data will be deleted.

To go to managing application memory, open your smartphone settings and find the section Applications. From the list of all installed apps, select the one that consumes the most resources. Inside the application card, click on the item Memory or Storage, where you will see two buttons: “Clear cache” and “Clear everything.”

• 🧹 Clear cache — deletes only temporary files without affecting your logins, passwords and settings inside the application.
• 🗑️ Clear everything —resets the application to the “as after installation” state, deleting all user information and authorization.
• 📊 Management —allows you to force stop the application before clearing if it is frozen.

It is important to distinguish between these two actions, since clicking the “Clear all” button will require you to log in to your account again and set up notifications again. For most cases when you just need to free up space, using the cache clearing function is enough. This is especially true for browsers that can store gigabytes of data of visited pages.

Cleaning through Recovery mode

If the smartphone is unstable, freezes on the screensaver or standard methods do not help, you can use the recovery mode Recovery. This tool allows you to clear the system cache (Dalvik/ART Cache), which is responsible for compiling applications and operating the operating system as a whole. This procedure often solves problems with “brakes” after major MIUI updates.

To enter this mode, you must completely turn off the device Redmi 9T. Then simultaneously hold down the volume up (Volume Up) and power (Power) buttons. Hold them until the logo appears Mi, then release the power button, but continue to hold the volume until the main Recovery menu appears.

Volume Up + Power -> Hold until the logo -> Release Power -> Wait for menu

In the control menu, which only responds to the volume buttons (up/down to move, power button to confirm), select Wipe Data. Be extremely careful: in some versions of Recovery this item may contain a subitem Wipe All Datathat will delete everything from the phone. You need exactly the item Wipe Cache (if available separately) or clearing the cache without deleting user data.

⚠️ Attention: Incorrect selection of an item in the Recovery menu, for example, confirmation Format Data, will lead to the complete loss of all photos and contacts. Make sure that you select an action associated only with the cache (Cache).

What to do if the menu is in Chinese?

If you are in the Chinese version of Recovery, be guided by the icons or the position of the buttons. Usually the clear cache button is second from the top. You can also connect your phone to a PC, and the menu can switch to English automatically.

Memory analysis and data type table

Understanding what exactly is taking up space in your Redmi 9Thelps prevent future problems with running out of space. The smartphone's memory is divided into several logical sections, and not all of them can be safely cleared by the user. Below is a table that explains the types of data you encounter in storage settings.

Data type	Description	Can be deleted?	Impact on the system
Cache applications	Temporary files to speed up work	Yes, safe	Applications will take a little longer to load the first time
Application data	Settings, logins, game saves	No (will reset settings)	Full reset of the application to the factory state
System cache	OS optimization files (Dalvik)	Yes, via Recovery	Speed up the system after a reboot
Media	Photos, videos, music, downloads	Only unnecessary things	Loss of personal files when deleting

As can be seen from the table, the safest partition for regular cleaning is cache. However, it is worth remembering that after clearing the cache of heavy applications, such as navigators or maps, they may temporarily consume more traffic to re-download data. This is a normal reaction of the system to the absence of locally stored fragments.

Third-party utilities and automation

For those who prefer automate the smartphone maintenance process; there are third-party applications from the store Google Play. apps like CCleaner, Files by Google or Clean Master offer advanced analysis functions that sometimes find things that the standard Xiaomi tool misses. They can detect duplicate photos, empty folders, and outdated APK files.

However, the use of such apps requires caution. Many of them run in the background and themselves consume battery and RAM resources, which can negate the benefits of cleaning. It is recommended to use them occasionally for deep scanning, rather than keeping them constantly active. The utility has proven itself best Files by Google due to the absence of intrusive advertising and integration with the system.

When installing any cleaner, carefully check the permissions it requests. If a simple junk removal app requires access to your contacts, microphone, or call history, that's a red flag. Trust only trusted developers and read reviews from other users Redmi before installation.

Prevention and frequently asked questions

In order not to return to the issue of clearing the cache Redmi 9T too often, you should adhere to a few simple operating rules. First, do not install applications from dubious sources, as they often contain hidden modules that generate garbage. Secondly, periodically check the folder Download and delete installation files from there that are no longer needed.

It is also useful to disable automatic saving of media files in instant messengers if you have little space. This will prevent duplicate images and videos that are cached in the gallery. Remember that The memory module in Redmi 9T is not expandable with a microSD cardtherefore, internal storage of 64 or 128 GB is the only available resource that needs to be protected.

Will clearing the cache delete my photos and contacts?

No, clearing the cache only affects temporary technical application files. Your personal data, such as photos, videos, contacts and messages, will remain completely safe. Delete only the cache, and not the application “data”, if you want to save the settings.

How often should you clear the cache on Redmi 9T?

The optimal frequency is once every 2-3 weeks or when there are signs of memory shortage. If you actively use social networks and browsers, you can carry out the procedure weekly through the Security application.

Why does the cache quickly fill up again after clearing?

This is normal Android behavior. Applications create a cache again for their work. If the volume grows abnormally quickly (gigabytes per day), perhaps there is a bug in a particular application and it should be reinstalled.

Is it possible to clear the cache of all applications at once with one button?

In the standard Android settings there is no such button, but the built-in “Security” application from Xiaomi allows you to do this in one click through the “Cleaning” section, which is the most convenient option.