Owners of Xiaomi, Redmi and Poco devices face slowdowns sooner or later, a natural process of accumulating temporary files, remnants of deleted applications and fragmenting the database, and cleaning up a smartphone is not just about deleting photos, but a set of measures to restore performance.
Many users mistakenly believe that a standard tool is enough, but deep cleaning requires specific knowledge about the Android file system and the MIUI or HyperOS shell. In this article, we will discuss secure methods of freeing up memory that will not harm the system.
Before we start taking drastic measures, we need to assess the current state of storage, and often the problem is not a shortage of gigabytes, but a mismanagement of data, and a smart approach will allow the device to run faster without buying new hardware.
Use of the built-in "Security" application
Each Xiaomi device has a system tool preinstalled, which is the first frontier of protection against digital garbage.The Security app can scan the system for cache, advertising files and unused items. APK-Installers: Running a deep scan can detect up to 80 percent of the surface debris.
But you don't have to rely on automatic mode alone. You can manually select file categories for removal in the Cleanup app settings, for example, the Big Files tab, where you can find old videos or forgotten downloads that take up gigabytes, is often forgotten.
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Do not delete files with the.obb or.data extension in Android folders unless you are sure they belong to remote games.
It is important to regularly update virus databases within the application, as new threats appear constantly. AVL, integrated into the system, requires relevant signatures for effective operation.
Manual cleaning of hidden folders and app cache
For advanced users, manual navigation of the file system is available through standard Explorer. The bulk of the garbage is usually hidden in the /Android/data and /Android/obb directory. It stores cached data from messengers, maps and social networks.
Pay special attention to the tencent folder if you use Chinese versions of games or apps like WeChat. MIUI, where error logs and design themes are saved. debug_log Safely and can free up hundreds of megabytes.
⚠️ Note: When manually cleaning, never delete files with the.xml or.db extension in your system folders unless you know their exact purpose.
☑️ Checklist for manual cleaning
Messengers like Telegram and WhatsApp have their own storage settings, so you can limit the auto-save of media files in the chat settings, which will prevent fast memory filling in in the future, and you should set a media storage time limit, such as “3 days” or “1 week”.
Cleaning the system partition and removing updates
The system partition is often inflated by accumulated service packs. Once a new version of MIUI is successfully installed, the installation file can remain in memory. You can find it by Settings → About Phone → MIUI Version → Menu (three dots) → Delete the update pack.
This operation is safe, because the system is already updated and the installation file is no longer needed, and releasing this space can give you 2 to 5 GB of free space, which is critical for models with a small amount of internal memory.
Why does the system take up so much space?
Also worth checking is the Download and Bluetooth folder, which often automatically saves documents from messengers or files transmitted over the wireless network, and deleting them will not affect the stability of the smartphone.
Analysis of storage using third-party utilities
Standard tools don't always show the whole picture. To visualize occupied space, it's effective to use tools like Files by Google or DiskUsage, and they build a graphics card where the squares are the size of the files.
Using these tools, you can instantly find heavyweights — forgotten movies, TV shows or archives that can take up to 40% of memory — and visualization helps you understand the patterns of resource consumption better than dry numbers in settings.
When installing third-party file managers, be sure to request permission to access all files. Without this, Android (especially versions 11 and above) will not allow the utility to scan system directories and folders of other applications.
Reset network settings and clean up DNS
Sometimes the brakes and Internet problems are caused not by overcrowded memory, but by accumulated network setting errors, resetting network settings returns Wi-Fi, Bluetooth and mobile settings to factory values.
You can do this through the Settings menu → Connect and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. This will not delete your personal photos or contacts, but you will have to re-enter passwords from wireless networks.
| Action. | Impact on data | Need for a reset |
|---|---|---|
| Cleaning up the app cache | Secure, data is stored | Not required |
| Delete APK files | Safe. | Not required |
| Resetting network settings | Removing Wi-Fi passwords | Preferably. |
| Full reset (Wipe) | Deletion of ALL data | I'll be sure. |
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Comprehensive cleaning involves not only deleting files, but also optimizing network settings to improve overall interface responsiveness.
Radical measures: full reset to factory settings
If software cleaning doesn’t work and the device continues to work slowly, the final argument is a complete reset, which puts the phone back out of the box, removing all user data, accounts and apps.
Before starting the procedure, it is critical to create a full backup. Use the Mi Cloud cloud or local save to your computer via MIUI Assistant. After the reset, it will take time to restore the data, but this is guaranteed to eliminate software errors and “junk”.
⚠️ Note: Before a complete reset, be sure to remove SIM-microSD card and memory card, if installed.In some cases, the system may try to format the external card along with the internal memory.
To perform the reset, go to Settings → About Phone → Settings Reset → Erase all data. The system will ask you to enter the unlock password and the password from the Mi Account to confirm the identity of the owner.
Prevention: How to maintain cleanliness of the system
To avoid going back to the question of how to clean every two weeks, implement simple digital hygiene rules, regularly remove apps you haven't used for more than a month, background processes of unnecessary programs consume battery and RAM.
Disable auto-update apps over the mobile network, leaving this feature only for Wi-Fi. This will prevent the accidental download of heavy updates and save traffic. It is also recommended to reboot the smartphone once a month to reset temporary processes.
⚠️ Warning: Don’t install questionable accelerators and antiviruses from Play Market.They are often the source of advertising themselves and put more stress on the system than they help.
Use the “light” versions of apps (Lite) if you have a budget model of a smartphone. For example, Facebook Lite or Google Go consume significantly less resources than their full counterparts, which significantly prolongs the life of the device.