Xiaomi’s Redmi series is well-deservedly popular for its excellent price-to-function ratio. However, like any electronic device, the phone slows down over time and memory space shrinks rapidly, often caused by accumulated temporary files known as cache.
Caching is a mechanism that allows applications to load data faster, saving copies of it on the device. In theory, this should speed up work, but in practice, a sprawling cache can take up gigabytes of usable space and cause conflicts in the MIUI operating system. If your Redmi 8 has started to slow down or issues notifications about space shortages, it is time to digitally clean up.
In this article, we will take a look at all the cleaning options available, from standard system tools to advanced methods for power users. You will learn how to clean the cache from data reset, which folders can be deleted safely and how to prevent memory overflows again. This guide will help to restore your gadget to its former sharpness and make room for new photos and applications.
What is cache and why does it fill up Redmi 8 memory?
Cache is a buffer memory that stores temporary files that are necessary for programs to run quickly. When you launch a browser, social network or game, the system does not download every interface element from the Internet or internal memory, but takes them from the cache, which greatly speeds up the interface response and reduces traffic consumption.
But there's a downside to this mechanism: over time, the volume of temporary files can become disproportionate to their usefulness. Old logos, thumbnails of images and web pages you've been visiting for months ago continue to take up space. In the MIUI operating shell installed on Redmi 8, this process can be particularly noticeable due to the active work of system services and advertising.
The accumulation of junk files leads to several negative consequences: first, critically reduced the amount of free internal memory, which prevents the installation of updates or new applications; second, damaged or conflicting cache files can cause malfunctions in programs, up to sudden closures or “hangs” of the phone.
Why can't you just ban cache?
It's important to understand the difference between cache and user data. Cache is temporary garbage that can be deleted. Data is your logins, settings, correspondence and saves in games. When clearing the cache, your personal files remain intact, making this procedure safe for daily maintenance.
Preparation of the smartphone for the cleaning procedure
Before you start deleting temporary files, make sure the system is ready for service.While cleaning the cache is a safe operation, interrupting the process or lack of battery power can cause some applications to malfunction.Make sure that your Xiaomi Redmi 8 battery is at least 20-30%.
It is also recommended to check for important unsaved data in active applications. For example, if you edited a document or wrote a long message in a draft, it is better to keep progress. Although standard cache cleaning does not affect user files, reinsurance will never be superfluous when working with system settings.
- 🔋 Check the battery level and connect the charger if necessary.
- 💾 Make sure you have access to Wi-Fi or mobile network for possible rechecking of application data.
- 🔄 Close all heavy applications running in the background through the menu of running tasks.
- 📱 Backup important data if your phone’s memory is almost full.
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Before deep cleaning, take a screenshot of the Memory screen in the settings, which will help you visually assess how much space you have freed up after completing all the procedures.
Another important step is to update the built-in Security app. Xiaomi regularly releases updates for its system utilities, improving the algorithms for finding junk files. Go to the GetApps store or Google Play and check for updates for system components.
Use of the built-in "Security" application
The easiest and most effective way to clear the cache on Redmi 8 is to use the standard MIUI shell toolkit. Every Xiaomi smartphone has a Security app preinstalled, which combines antivirus, memory cleaning and permission management, a method ideal for quick daily cleaning.
To start, look for a green shield icon on your desktop, which is the security center. Run the app and wait for the automatic scan to scan the system, it will check the device for viruses, and it will analyze the amount of debris it occupies. Press the Cleaner button to start the process of deleting temporary files.
The system will prompt you to delete cache files, deleted app residues, and advertising debris. You can selectively exclude certain categories if you're afraid of losing data, but for standard cleaning, you'd better leave all ticks active. Click "Clear selected" and wait for the process to be completed.
☑️ Quick cleaning algorithm
Once the procedure is complete, the system will show the amount of free space. Please note that the Security app cleans mainly the system cache and cache of recently launched applications. For a deeper cleaning, you need to go to the settings of each particular application separately.
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The built-in MIUI cleaner is safe and optimized for Redmi 8 iron, so it is the preferred method for most users.
Manually cleaning the cache of individual applications
If a particular application (e.g. YouTube, Instagram or Telegram) is not working properly or takes up a disproportionate amount of space, the cache must be manually cleaned, a method that allows a point-by-point impact on problem areas without affecting the entire system.
To get to the menu you want, go to Settings and select Apps. Then click All Apps. In the list that opens, find the program you want. You can use the search bar at the top so you don't manually flip through the entire list. Click on the app name.
You'll see a memory or storage button in the app menu, and by clicking on it, you'll have access to two important options: Clear cache and Clear all data. Attention: select Clear cache if you want to just free up space. The Clear all data button will reset the app to the original installation state by deleting your logins and settings.
| Annex | Type of data in the cache | Is it safe to clean? | Impact on work |
|---|---|---|---|
| YouTube | Miniatures, temporary video files | Yeah, totally. | Videos can be loaded a little longer on the first run |
| Telegram | Photos, videos, chat stickers | Yes, but better through the settings of the Telegram | Media from chats will have to be downloaded again when viewing |
| Google Chrome | Copies of web pages, images of sites | Yes. | Sites will open with full loading of elements |
| Tape, story, thumbnails. | Yes. | You may need to re-enter your account in rare cases. |
Pay particular attention to messengers. Telegram and WhatsApp cache can take up tens of gigabytes. These applications often have their own storage settings that allow you to flexibly manage autoload media and clear cache without leaving the settings menu of the application itself.
Deep Cleanup through Recovery Mode
For advanced users, there is the option of clearing the system cache (Dalvik/ART cache) through Recovery Mode. This method is useful if the phone is unstable after updating the system or installing a large number of applications. Redmi 8 supports entry into this mode through a combination of buttons.
To enter Recovery mode, turn off your smartphone completely. Then simultaneously press the Volume Up and Power buttons. Hold them until the Mi logo appears, then release the power button, but keep the volume down. When the menu appears in English, the button can be released.
In the menu, the navigation is done with volume buttons (up/down), and the choice is confirmed by the power button. Find Wipe Data. In some versions of Recovery on global firmware, this item may not be available or hidden. If you see a Wipe Cache item, select it. If there is no such item, and there is only Wipe All Data, do not press it, as this will lead to a complete reset of the phone.
⚠️ Warning: Be extremely careful in Recovery mode. Incorrect item selection (e.g. Wipe All Data instead of Wipe Cache) will result in the complete removal of all your photos, contacts and applications without the ability to restore the data.
If your Recovery menu doesn't have a separate option for cleaning the cache, it means the manufacturer has hidden it to protect inexperienced users, in which case it's better to limit the cleaning methods through the system settings described above. Forced Cleaning through a computer (ADB) requires an unlocked bootloader and command line skills.
What's Dalvik Cache?
Third-party applications for memory cleaning
Google Play has a lot of garbage cleaning tools, like CCleaner, Files by Google, or Clean Master. Should you use them on Redmi 8? Experts are divided. On the one hand, they can find files that the standard Xiaomi utility missed.
On the other hand, third-party cliners often consume resources, display ads and can aggressively close down the desired background processes, which reduces autonomy. The MIUI shell has a rather aggressive memory management, so additional "accelerators" are often redundant.
If you do decide to use third-party software, choose proven solutions from well-known developers, such as Files by Google. This application safely analyzes the file system, finds duplicates, large files and temporary cache, suggesting that they be deleted. It has no intrusive advertising and unnecessary features.
- 📂 Files by Google – the best choice for finding duplicates and large forgotten files.
- 🧹 SD Maid is a powerful tool for advanced users, can clean the tails of remote programs.
- 🚫 Avoid questionable accelerators with bright ads that promise to increase Internet speed or battery power.
⚠️ Warning: Never give third-party root-cleaning apps unless you are sure they are reliable, which could result in the deletion of critical system files and disruption of Android.
Preventive and Optimization Tips for Redmi 8
Cache cleaning is a temporary measure. To keep your Xiaomi Redmi 8 fast, it’s important to maintain digital hygiene. Check the Downloads folder regularly and delete unnecessary files. Turn off autoloading images and videos in instant messengers if you have tariffed traffic or little memory.
Use Memory Extension if your version of MIUI supports it, it allows you to use some of your internal memory as virtual RAM, which helps your phone multitask better, and keep at least 10-15% of your internal memory free for the system to work properly.
Remember to update the applications and the system itself. Developers are constantly optimizing the code to eliminate memory leaks. If an application continues to behave incorrectly after cleaning the cache and reinstalling it, it may be worth looking for an alternative to it or using its lightweight version (Lite).
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Regular manual inspection of storage once a month is more effective than daily use of automatic boosters, which consume the battery.