Modern Xiaomi smartphones, which run on the shell of MIUI or the new HyperOS, have powerful functionality, but eventually begin to require maintenance. One of the most common reasons for slowing down the device is the accumulation of temporary files, known as cache. This data is created by applications to speed up their launch, but over time grows to a giant size, taking up precious space in memory.
Users often notice that the phone is slowing down, opening programs for a long time or suddenly closing them. In most cases, the problem lies in crowded storage and fragmented temporary files. Regular cleaning helps to restore the gadget to its former friction without having to buy a new device.
In this article, we will take a look at all the cleaning options available, from standard system tools to advanced methods through the engineering menu, learn to distinguish between secure files and system debris that can’t be touched, and the right memory maintenance approach will extend the life of your Redmi or Poco smartphone.
What is cache and why remove it
Cache is a buffer memory in which apps store frequently used data. For example, a browser stores pictures of visited sites so that when you re-enter the page loads instantly. Social networks store photos and videos that you have viewed here, and navigators store sections of maps. This speeds up work, but takes up space.
The problem arises when the cache size becomes disproportionately useful, applications may mismanage their temporary files by creating duplicates or leaving tails after deleted content, resulting in gigabytes of useless digital junk on the drive.
Regular cleaning is necessary to free up space for new photos and updates, and corrupted cache files often cause programs to crash, and if YouTube or Telegram are unstable, the first thing to do is to try to clear their cache.
It is important to understand the difference between cleaning the cache and resetting data: in the first case, only temporary files are deleted, and your logins, passwords and correspondence are saved, in the second case, the application returns to the “as after installation” state, which requires re-authorization.
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Use the Cleanup feature in the standard Security app once a week to prevent critical memory filling.
Preparing the smartphone for cleaning
Before you start taking any drastic measures, you need to do basic training to avoid accidental loss of important data and understand which parts of memory need attention, first check the general state of the storage through system settings.
Backup of important photos and documents is recommended.While standard cache cleaning is safe, human factor or software failure can lead to trouble.Sync contacts and media files with the Xiaomi Cloud or Google Photos cloud service.
- 📱 Close all running applications through the multitasking menu to stop background processes.
- 🔋 Make sure that the battery is at least 30% in order to avoid shutdown.
- 📶 Turn off the Internet if you plan to clean the cache of system services to avoid synchronization of garbage.
Also, you should remove long-unused applications, which can generate background traffic and create temporary files even in sleep mode, and freeing up space before cleaning will allow the system to work more efficiently when relocating data.
☑️ Checking before cleaning
Cleaning the cache through the standard Security app
The easiest and safest way for most users is to use the built-in Security tool, a system application preinstalled on all Xiaomi smartphones that has access to deep layers of the file system.
To get started, open a shortcut called “Security” (a green icon with a shield). Click on the large “Scan” button or select “Clean” option. The system will automatically analyze the memory and find temporary files, remnants of deleted applications and advertising debris.
Once you've finished scanning, you'll see a list of file categories that you can delete. Be careful: sometimes the cache section will contain files you'd like to save, like drafts in messengers. Carefully examine the contents before pressing the clean button.
What is Deep Cleanup?
The app also includes the Acceleration feature, which clears RAM from background processes.This doesn't free up disk space, but can temporarily improve performance for games and heavy applications.
Manually cleaning the cache of specific applications
If the memory problem is only one program, like Instagram or TikTok, you don't have to clean the entire phone, you can selectively delete the cache of a particular application through the system settings, which is a more point-based and secure method.
Go to Settings → Applications → All apps. Find the program you want and click on it. From the menu that opens, select Storage or Memory. You will see two buttons: Clear cache and Clear everything.
Click on Clear Cache, which will delete temporary files but save your accounts and settings inside the app, and if you choose Clear Everything, the program will reset to factory status, and you will have to re-enter your login and password.
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Manually cleaning the cache of an individual application is the most effective way to solve the problem with departures of a particular program without losing personal data.
For some system applications, the cache clearing button may be inactive.This is the normal Android protection behavior, preventing the deletion of critical temporary files necessary for the MIUI interface to function smoothly.
Using the Recovery Menu to Clean Up Completely
For advanced users who are facing serious system problems, there is Recovery mode, which is a recovery environment that starts before the main operating system loads, and you can perform a full cleaning of the system cache (Wipe Cache Partition).
Warning: This method requires precision. Don't confuse cache cleaning with a full Wipe Data reset that will delete all your personal files.
To enter Recovery mode, turn off your smartphone completely. Then press the volume button and the power button at the same time. Hold them until the Mi logo appears, then release the power, but keep the volume up until the menu appears.
In the menu, the navigation is done with volume buttons (up/down), and the choice is confirmed by the power button. Find Wipe Cache or Wipe Data (be careful, choose only Cache), after confirmation, the system will clear the system cache and offer a reboot.
⚠️ Warning: In Recovery mode, don't select "Wipe All Data" or "Factory Reset" unless you want to lose all photos, contacts and apps.Cache clearing is safe, full reset is not.
This method is especially useful after major firmware updates, when the system may not work as well due to conflicts between old temporary files and the new OS version.
Automation and third-party utilities
Xiaomi's built-in tools are quite efficient, but sometimes more flexible settings are required. There are many cleaning apps available in the Google Play store, but it's worth being selective. Many of them just duplicate the functionality of the system and show intrusive advertising.
Files by Google or SD Maid are considered proven solutions, which can find files left over after deleting applications and analyze the disk in more detail, and can automatically clear the cache when a certain memory filling threshold is reached.
But installing too many "cleaners" can backfire: the constant operation of background cleaning services consumes the battery and loads the processor, and it is better to use one reliable application or regular MIUI facilities.
- 🚫 Avoid apps that promise to “speed up the internet” or “cool down the processor” – these are marketing ploys.
- ✅ Use Files by Google to find large files and duplicates.
- ⚙️ Set up automatic cleaning in the Safety Schedule app.
Process automation is good because you don’t have to remember to maintain it.The smartphone will keep it clean in the background, notifying you only in critical situations.
Comparison of cleaning methods and their effectiveness
Different cleaning methods solve different problems, and to make it easier for you to navigate, we have prepared a comparative table that will help you choose the best way to solve your situation.
| Cleaning method | Security | Efficiency | Difficulty |
|---|---|---|---|
| Security Annex | Tall. | Medium | Low. |
| Manual cleaning of the application | Tall. | High (point) | Low. |
| Recovery mode | Medium (requires attention) | Very high. | Tall. |
| Third-party utilities | Depends on the app. | Medium | Low. |
As you can see from the table, for everyday use, a regular application is enough, and Recovery mode should be saved for serious cases when the phone behaves inadequately after updates.
Don't be fanatically aiming for a 0MB memory target. Android is designed to use free space to caching and speed up, and a completely empty phone can run even slower than a slightly full one.
⚠️ Note: Do not use "accelerators" RAM», They're constantly unloading applications from memory, and that causes the processor to spend more energy restarting them, which reduces autonomy.