Xiaomi Redmi smartphones are famous for their value for money, but even powerful devices are slowing down over time. The main reason for the decline in performance is often a crowded cache of applications and system services. These are temporary files that accumulate during the use of the browser, social networks and games, taking up valuable space in internal memory.
Understanding how to manage this data can significantly extend the life of the gadget without having to buy a new model. In this article, we will discuss all available cleaning methods, from standard MIUI shell tools to advanced methods through the developer menu, you will learn which files can be deleted without fear and which should not be touched.
Regular maintenance of a device is not just about removing garbage, but an important part of digital hygiene. Cache cleaning helps eliminate many software bugs, such as interface freezes or incorrect display of content in applications. Let's look at why this is so important and how to make the process as efficient as possible.
What is cache and why you need to clean it
Cache is a buffer memory that stores temporary data for quick access. When you open a web page or launch a game, Android stores certain elements so that they load instantly the next time you run, but over time, this data can become outdated, corrupted or simply take up gigabytes of space.
On Xiaomi devices with MIUI or HyperOS shells, the system tries to manage the memory itself, but sometimes it requires the user’s help. A crowded cache can cause the phone to start heating up and the battery to run out faster than usual, because the processor has to constantly go to crowded storage.
What is the difference between cache and application data?
There are several types of cached files, and it is important to distinguish them: System cache, application cache, and browser cache have different structures and cleanup methods. Ignoring this procedure can lead to a critical filling of the /data partition, making it impossible to install updates or new programs.
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Clearing the cache does not delete your personal photos, contacts or correspondence, it only affects temporary files, speeding up the system.
Use of the built-in "Security" application
The easiest and safest way to clean up for most users is to use a pre-installed system tool. Every Xiaomi Redmi smartphone has a Security app that combines antivirus and a memory cleaner, which automatically scans the device for junk files.
To get started, you have to run the app and click on the big green Cleanup button, and the system will analyze and suggest that you delete unnecessary files, but it's important not to blindly trust the automation, but to check what exactly is being proposed for deletion. Often, the list turns out to be files that you might want to save.
☑️ Checking before cleaning
You can select specific categories from the cleaner menu to analyze, such as large files, duplicate photos, or APK installation packages, which gives you more subtle control over the device's memory than simple automatic cleaning, and using this tool regularly helps keep the phone on top.
⚠️ Note: When using Deep Cleanup, carefully look at file previews. Sometimes the system will flag screenshots or downloaded documents that you may need as trash.
In addition, the Security settings enable automatic cleaning, the phone will make room when free memory drops below a certain threshold, a handy feature for those who don’t like to manually monitor the state of the storage.
Manually cleaning the cache of individual applications
Sometimes the problem is not with the system as a whole, but with a particular application that has started to work incorrectly, such as YouTube or Instagram, which can stop downloading videos or give out errors, in which case you need to manually clean the cache of a particular service through settings.
To do this, go to Settings → Apps → All apps. In the list that opens, find the program you want (like Chrome or VKontakte). Click on it to open the management page, and select Memory or Storage, where you will see two buttons: Clear cache and Clear everything.
It is important not to confuse the two. The Clear Cache button is secure and only deletes temporary files. The Clear Everything button (or Reset) completely deletes the application data, including your logins, passwords and settings. Use it only in extreme cases when you need a complete reset.
Telegram and WhatsApp have their own built-in memory management settings, which are often more efficient than the system ones. Telegram, for example, can set up automatic cleaning of the cache of media files after a certain period of time, eliminating the need to do this manually.
Cleaning the cache in recovery mode (Recovery Mode)
If the smartphone is extremely slow or hanging on the logo, it may be necessary to clean the system cache through Recovery mode.This method is deeper and affects system temporary files that are not deleted through the standard menu.
To get into recovery mode on Xiaomi Redmi, you need to turn off the phone completely. Then press the Volume+ and Power button at the same time. Hold them until the Mi logo appears, then release the power button, continue to keep the volume. The menu is navigated by volume buttons, and the choice is by the power button.
In the Recovery menu, find Wipe Cache Partition. Confirm the action. Importantly, don't confuse this with Wipe Data, because the latter will completely delete all your personal data and return the phone to the factory settings.
| Action. | Risk of data loss | When to apply |
|---|---|---|
| Cache cleanup (Cache) | No. | For lags, errors after the update |
| Data resetting (Wipe Data) | Total loss. | When selling a phone, critical failures |
| Reboot System | No. | To exit the recovery regime |
| Connect with Assistant | No. | Connecting to PC via Mi Assistant |
⚠️ Note: On some new models with a locked bootloader, the Wipe Cache Partition may be missing or not available.
Once the cleaning process is complete, select Reboot or Reboot to System. The first download may take longer than usual, as the system will recreate the necessary temporary files.
Deletion of residual files and folders
Even after deleting apps, the phone often has tails — folders with settings and cache — that can be dealt with using the built-in MIUI file manager or third-party snails like Total Commander. Find the Android/data and Android/obb folder.
These directories store data from remote games and programs, and if you're sure you don't need the app anymore, the corresponding folder with its name (usually the developer's domain name, such as com.king.candycrushsaga) can be safely deleted, freeing up a lot of space.
Also worth checking is MIUI and Tencent folders (if you use products from this company), which often accumulate old backups, error logs and temporary update files, but you need to be careful and only delete the one you are sure of.
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Use the file manager's Storage Analyzer to visually see which folders take up the most space. Large color sectors will help you quickly find memory eaters.
Remember Download, which is the fastest way to get a few gigabytes of free space, and browsers and instant messengers often save all the downloaded files that have been dead for years.
Automation and third-party utilities
For those who want to automate the process, there are specialized applications. However, on Xiaomi smartphones, you need to be careful with them. Aggressive cleaners can conflict with system optimization of MIUI, causing the opposite effect - the phone will start to run slower due to constant background activity of the cleaner.
Best used is time-tested tools like Files by Google, which safely analyzes memory, finds duplicates, blurred photos, and unused apps, and it doesn’t require root rights and works in the background, offering to remove garbage only when it’s really necessary.
You can also find the Advanced Cleanup feature in the phone settings, which allows you to configure automatic garbage removal scenarios, such as, "If less than 1 GB is free, clear the browser and social media cache," which eliminates the need to remember to manually clean.
⚠️ Warning: Avoid installing questionable Battery Saver apps or "RAM They often contain ads and miners that load the processor harder than the garbage they supposedly remove.
Remember, no program works wonders. If a phone has little memory (like 32 GB), even the best optimization won’t make it a flagship.