Smartphone Redmi 8, despite its age, remains a popular device due to its reliability and autonomy. However, over time, the operating system MIUI begins to accumulate temporary files, which inevitably leads to poor performance. Users often notice that the phone starts to work slower, applications take longer to open, and free storage space is critically reduced.
The main cause of such problems is overcrowded application cache system services. These are not viruses or malfunctions, but normal behavior of software that saves data for quick access. Regularly clearing this data allows you to return your device to its former speed and free up gigabytes of usable space without deleting your personal photos or contacts.
In this guide, we will look in detail at all the available ways to clear memory on your device. You'll learn how to safely delete temporary files, which sections of your system require special attention, and how to avoid common mistakes that can lead to the loss of important data. We will look at both standard tools Xiaomiand deep cleaning through the engineering menu.
Why the cache accumulates and how it affects performance
The cache is a storage area where an application places temporary data that it uses most often. For example, Google Chrome saves images from sites so that when you visit them again, the pages load instantly. Messengers like Telegram or WhatsApp store received media files and contact avatars here. Over time, this folder can grow to several gigabytes.
On the model Redmi 8 with its processor characteristics and the amount of RAM that are modest by modern standards, an overflowing cache becomes a bottleneck. The system wastes resources on indexing unnecessary files, which causes the interface to slow down. This is especially noticeable when switching between heavy applications or while playing games.
It is important to understand the difference between cache and user data. If you clear the cache, you will simply delete temporary files, and the application will download them again the next time you launch it. If you clear the data, the application will return to the “as after installation” state, having lost all your logins, settings and correspondence history inside it.
- 🚀 Startup acceleration: Applications open faster, since the system does not need to scan gigabytes of garbage.
- 💾 Freeing up space: On Redmi 8 with 32 or 64 GB of memory each free gigabyte in your account.
- 🔋 Battery saving: Background processes access full storage less frequently, reducing the load on the memory controller.
Basic cleaning through the "Security" application
The easiest and safest way start optimization - use the built-in application Security, which is preinstalled in the shell MIUI. This tool is designed specifically for devices Xiaomi and takes into account the specifics of their file system. Launch the application by finding its green shield icon on the desktop.
In the main menu, select Cleaning. The system will automatically scan the internal storage and show the volume of junk files. Typically this includes remnants of deleted applications, empty folders and, of course, the cache. Click the button Cleanto delete the found files. The process takes only a few seconds.
However, standard cleaning is often superficial. For deeper work, click on the button Delete junk again or go to section Deep cleaning. Here you will be able to see file categories: large files, rarely used applications and duplicates. Be careful when deleting large files - make sure that these are not your personal video archives.
Before starting deep cleaning, close all running applications through the multitasking menu. This will allow the system to more accurately determine which files are really not being used.
It is worth noting that the algorithms for the Security application may change with firmware updates. If the interface of your phone differs from that described, check the names of the sections in the current version MIUI for your model.
Manually clearing the cache of specific applications
Sometimes the problem of brakes lies in one specific application that does not manage its memory correctly. Social networks, browsers and instant messengers often become leaders in space consumption. In such cases, spot cleaning through the system settings will be more effective than general cleaning.
To perform this procedure, go to the menu Settings of your smartphone. Then select the section Applications and click on the item All applications. You will see a complete list of installed software. For convenience, you can sort them by size by clicking on the corresponding sorting icon at the top of the screen.
Find a “heavy” application in the list, for example, YouTube or Instagram. Click on it to open the information page. Here you will see two important buttons: Clear and Delete. We are interested in the first one. Click on it and in the menu that appears, select Clear cache.
Settings → Applications → All applications → [Selected application] → Clear → Clear cacheThis operation is completely safe for your data inside the application. You won't be logged out of your account or lose your correspondence. However, if you accidentally press Clear everything (or "Reset"), the application will forget your password and require you to log in again. Therefore, always read pop-up notifications carefully.
☑️ Check before manual cleaning
Clearing the browser cache and downloads
Web browsers are one of the main garbage storage on a smartphone. Each site visited leaves traces in the form of images, scripts and cookies. On Redmi 8where internal memory is limited, this quickly becomes a problem. Cleaning can be done both through the system settings and inside the browser itself.
If you are using a standard browser MIUI Browser or Chrome, go to its settings. They are usually hidden behind three dots in the corner of the screen. Find the section Privacy or History. There will be an item Clear history or Delete browsing data.
In the menu that opens, make sure the checkbox is next to the item Images and other files saved in the cache. At the same time, you can uncheck the “Browsing History” or “Passwords” checkboxes if you want to save them. Click the delete data button. This action will instantly free up space, but sites will take a little longer to load the next time you visit.
⚠️ Attention: Clearing browser data will delete saved logins and passwords on sites if you do not use synchronization with a Google account. Make sure you remember your passwords before the procedure.
Also do not forget to check the folder Downloads (Downloads). Often, users download application installation files (APKs), documents or pictures that are no longer needed. The file manager Explorer will help you find and delete these objects manually.
Hidden browser folders
Some browsers create hidden folders in the root of memory, for example .browser_cache. To remove them, you may need to enable the display of hidden files in the Explorer settings.
Using developer mode for global clearing
For advanced users who want to gain maximum control over the system Android, it is possible to clear the cache through the developer menu. This method allows you to reset the cache of all applications at the same time in one action, which is especially useful in case of global system failures.
First you need to activate developer mode. Go to Settings, select About phone and quickly click on the item MIUI version seven times in a row. A notification will appear indicating that you have become a developer. Now a new section will appear in the main settings menu Advanced → For developers.
Inside this menu, scroll down to the "Applications" section. Find the item Running services or simply use the settings search by entering the word “cache”. Some firmware versions have a direct button Clear all cache data. Clicking on it will require confirmation, after which the system will delete temporary files of all installed apps.
| Cleaning method | Security | Efficiency | Risk of data loss |
|---|---|---|---|
| Security application | High | Medium | No |
| Manual application cleaning | High | High (spotted) | Low (if error) |
| Developer mode | Medium | Maximum | No |
| Recovery Mode | Low | Maximum | High |
Use of developer tools requires caution. Do not change other settings in this menu if you are not sure of their purpose, as this may lead to unstable operation Redmi 8.
Activating developer mode is a one-time action. Once enabled, it remains available until you disable it yourself in the settings.
Cleaning through Recovery Mode (Advanced method)
The most radical and deep cleaning method is using recovery mode (Recovery). This method allows you to clear the cache partition (Wipe Cache Partition) at the system level without affecting the user's personal files. This often helps if the phone freezes at the logo or is extremely unstable after an update.
To enter this mode, you must turn off the smartphone completely. Then hold down the Volume Up button and the Powerbutton at the same time. Hold them until the logo appears Mi, then release the power button, but continue to hold the volume until the menu appears Main Menu.
Navigation in this menu is carried out with the volume buttons (up and down), and selection is done with the button nutrition. Select item Wipe Data. In the next menu, it is important to select exactly Wipe Cache, and not Wipe All Data. The last item will delete everything from the phone, including photos and contacts, returning it to its factory state.
⚠️ Attention: Be extremely careful in the Recovery menu. Selecting “Wipe All Data” will completely reset the phone. Make sure that only “Wipe Cache” is selected.
After confirming the action, the system will clear the system cache. The process will take a few seconds. When finished, select Reboot → Reboot to System. The phone will reboot, and the first startup may take a little longer than usual, since the system will recreate the necessary temporary files.
What to do if the phone is not included in Recovery?
If the button combination does not work, try connecting the switched off phone to the computer via a USB cable and then hold down the buttons. On some versions of MIUI, this is a prerequisite.
Storage prevention and optimization
Regularly clearing the cache is good, but it’s even better to prevent it from growing critically. On a device Redmi 8 with limited memory, it is important to maintain digital hygiene. Disable automatic saving of media files in instant messengers unless absolutely necessary.
Use the “Free up space” function, which periodically appears in system notifications. It analyzes memory usage and suggests deleting old screenshots, large videos or unused apps. It is also recommended to transfer photos and videos to a memory card microSD or to cloud storage.
Keep an eye on application updates. Developers often optimize their products by reducing the amount of cache they take up. Deleting old versions of APK installation files, which may remain in the downloads folder after updating apps manually, will also give several hundred megabytes of freedom.
- 📅 Schedule: Carry out a complete clearing of the cache every 1-2 months.
- 📸 Media: Configure instant messengers to save photos only in chat, rather than in the gallery.
- ☁️ Cloud: Use Google Photos with Space Saver to automatically upload photos.
Is it safe to delete the Android/data folder?
Deleting the contents of a folder Android/data manually through a file manager can lead to resetting settings in games and applications, as well as losing downloaded maps or levels. Do this only if you are completely sure of the purpose of the files.
Why does the cache quickly fill up again after clearing?
This is normal system behavior. Applications create a cache for their work. If the cache grows abnormally quickly (gigabytes per day), perhaps one of the applications is not working correctly or has a “memory leak.”
Does clearing the cache affect the battery charge?
Indirectly - yes. Crowded storage forces the memory controller to work harder, and background processes may access the disk more often. Free space contributes to more stable operation of the power system.
Do you need to reboot the phone after cleaning?
It is desirable. A reboot allows the system to correctly rebuild file indexes and terminate background processes associated with deleted data, which provides the maximum performance boost.