How to Clear Hidden Cache on Xiaomi Android: The Complete Guide

Xiaomi’s smartphones are famous for their performance and availability, but over time, even the most powerful devices start to run slower. One of the main reasons for the slowdown in speed and lack of internal memory is the accumulation of hidden data that is not deleted during a standard cleaning. Hidden cache is temporary files that are created by applications and the system itself to speed up the load of frequently used items, but over time they grow to gigabytes.

Redmi and Poco owners often face a memory overflow message, although there seems to be a visually empty space, and the problem lies in the depths of the file system, where the standard conductor reluctantly lets, and in this article we will examine proven methods for deleting unnecessary files without losing personal data and disrupting the MIUI or HyperOS operating system.

It is important to understand that blindly deleting system folders can lead to unstable work of the gadget. It is critically important not to delete files with the.apk extension in the folders of system updates if you plan to roll back the version of the software. We will consider the safe cleaning paths available to both the average user and the advanced enthusiast.

What is a hidden cache and why does it take up space?

A hidden cache is a collection of temporary files that apps save for quick access to data. For example, Telegram or VK saves images and videos viewed so that when you reopen the chat, they download instantly. Over time, these files cease to be relevant, but continue to occupy precious space on the internal drive.

The MIUI-based Android operating system also creates its own hidden files to log bugs, index media files, and run background services. Dalvik/ART cache is an optimized application code that speeds up their launch. It's safe to clean, but once rebooted, the system will re-form it, which can temporarily slow down the device.

Users often confuse cache with app data, and if you clean up the data, you lose your logins, passwords, and settings, and if you clear the cache, you free up space by saving your account login, and it's important to distinguish between these concepts so you don't lose access to important services.

Preparation of the device before deep cleaning

Before you start removing system debris, you need to perform a number of preparatory steps, this will protect your personal data from accidental loss and will restore your phone in the event of a crash, it is recommended to back up important contacts and photos in the cloud storage of Google Drive or Xiaomi Cloud.

The process of cleaning system files, especially if it involves restarting or working in recovery mode, should not be interrupted due to battery discharge. Charge the device to a minimum of 60% before starting any manipulation of the file system.

⚠️ Warning: Before using advanced cleaning methods, make sure that the device is debugging enabled. USB, If you plan to use a computer, without this access, some system partitions may not be available for analysis.

Close all running applications, which will allow the system to complete the background data recording processes, which will prevent errors when trying to delete files that are currently being used by the active application.

Cleaning the cache through standard Android settings

The safest and easiest way to remove accumulated debris is to use the built-in tools of the system. Xiaomi provides flexible enough settings to manage memory without the need to install third-party software.

In the settings section, look for Apps or All Apps, and it shows you the complete list of installed software, and you need to sort them by memory size to find the most voracious programs, usually social networks and instant messengers.

Select the app you want from the list, and you'll see a page that tells you what to do, where you'll find the memory or storage button, and inside you'll see the two main options: "Clean" and "Clean it all," and we're interested in cleaning the cache, which is often hidden under the "Clean" button without further clarification, while "Clean it all" deletes the data.

• 📱 Go to Settings. → Annexes → All applications.
• 🔍 Choose an app that takes up a lot of space (like YouTube or Instagram).
• 🗑️ Click Clean (not to be confused with Clean Everything»).
• ✅ Confirm the action in the pop-up window.

Repeat this procedure for all heavy applications. Although it takes time, this method ensures that you do not delete anything superfluous. Android itself controls the integrity of files in this method of cleaning.

Using the “Conductor” application for manual removal

For more advanced cleaning, you can use the standard File Manager Explorer, which is preinstalled on all Xiaomi smartphones. It allows you to look into hidden directories, where normal settings are not allowed. Open the application and click on the menu icon (three bars or dots) to enable the display of hidden files.

You're interested in the Android root folder, and the data directory is inside it, and it stores the data and cache of all the apps installed, and the folders are named after the packet names (e.g. com.whatsapp), and be very careful: deleting the entire folder will cause the app to lose data, so look inside the cache subfolder.

It's also worth checking the MIUI folder at the root of internal memory, which can contain system logs, old log themes, and remnants of remote applications, and files with the.log or.tmp extension can be deleted without fear, they are created temporarily.

After manual cleaning, be sure to restart the device, which will allow the system to recalculate the file index and correctly display the freed up space in the memory statistics.

Cleaning through Recovery and ADB mode

If standard methods didn't help to free up space, you can use Recovery Recovery mode, which is a deeper level of interaction with the system. To log in, turn off the phone completely, then press the power and volume buttons simultaneously. Hold them until the Mi logo appears.

In the Recovery menu (use volume buttons for navigation and power button for selection), find Wipe Data. Here it is important to choose Wipe Cache, not Wipe All Data. The first option will delete only temporary system files, the second will completely reset the phone to the factory settings with all photos and contacts.

For users familiar with ADB (Android Debug Bridge), there are even more options: By connecting the phone to a computer with drivers installed, you can execute a Dalvik cache clearing command. This is especially useful after major firmware updates when the system is not running.

adb shell pm trim-caches 999999999

This command forcibly trims the cache of all applications to the lowest possible value. It's secure, but it requires USB debugging enabled in the Developer Menu.

⚠️ Note: In Recovery mode, navigation may vary depending on the version MIUI. If you are not sure about the choice of item, better from the menu (Reboot button) to avoid a complete reset of the device.

Automation of the process with scripts

For those who don’t want to manually crawl folders every time, there are ways to automate. Xiaomi smartphones with Root rights can use specialized scripts that clear the cache on a schedule, but obtaining Root rights is insecure and can disrupt banking applications.

A safer option is to use automated applications like Tasker or a MIUI-built task scheduler, and you can set up a script that, with low free memory, closes the background applications and clears the browser cache.

Also worth paying attention to is the built-in Security app, which has a Cleanup feature that works reasonably well for everyday use, and set up automatic cleaning in its settings so that the phone can service itself in the background.

• 🤖 Use the built-in planner MIUI automation.
• ⚙️ Set up a clean-up scenario in a free space of less than 1 GB.
• 🚫 Avoid installing Play Market cleaners, they are often trash themselves.

Automation is good because it prevents critical overflows that could cause the system to freeze, and regular maintenance is more important than one-time vacancy promotions.

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Tip: Turn off auto-save statuses on WhatsApp and Instagram if you don't use them. These files instantly fill in the hidden cache of media files.

Frequent errors in cleaning the system

Many users make critical mistakes in their quest to free up space, most common being deleting folders with unknown names at the root of internal memory, often the system directories required to run Google Services or hardware drivers.

Another mistake is the use of dubious accelerator applications, which not only do not clean the cache efficiently, but also implement themselves into the autoboot, using processor and battery resources, antivirus and cleaners from unknown developers can contain advertising modules.

You also don't want to delete.obb files in your Android/obb folder. This is a cache of heavy games and programs. If you delete them, the game will stop running or you'll have to download gigabytes of data again every time you log in.

⚠️ Note: Never delete prefixed files android_secure This is encrypted data from applications that have been transferred to the memory card. SD-Deleting them will make applications unusable.

Be selective. Better to remove 100MB of trash knowing it's safe than 10GB, risk the stability of your smartphone. Android itself effectively manages memory if it's not interfered with with with rude interference.

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Main point: Regular manual cache cleaning of heavy applications is more effective and safer than using aggressive third-party utilities.

FAQ: Frequently Asked Questions