How to Clear Cache on Xiaomi POCO X3: The Complete Guide

Modern smartphones like the POCO X3 NFC or X3 Pro have powerful hardware, but even these become slower over time. The main reason for the decline in performance and lack of space is often accumulated system debris. These are temporary files that applications create to quickly download content, but stop deleting after use.

Cache cleaning is a safe and effective way to bring back sharpness without deleting personal data, photos or contacts. The MIUI operating system that is installed on the Xiaomi POCO X3 has built-in tools for this task, but they don’t always work as advanced users expect.

In this article, we will look at not only standard settings, but also hidden system functions, as well as methods of deep cleaning through the engineering menu. You will learn to distinguish between useful cache that speeds up work and malicious remnants of remote programs. Understanding these processes will help you keep your smartphone in perfect condition throughout its life.

What is cache and why should it be cleaned on POCO

Cache is a memory area where temporary data is stored for quick access, and when you open a browser, social network, or game, the system stores logos, scripts, and thumbnails of images, so that when you re-enter, you don't have to download them again from the Internet, which saves traffic and time.

But over time, these files can grow to gigabytes, and the problem is that Android algorithms don't always delete old data correctly, and as a result, a digital junk accumulates on the POCO X3 drive, which takes up space and can cause conflicts in the work of applications, and overcrowded cache often causes interface freezes.

⚠️ Caution: Clearing the cache does not delete your logins, passwords or correspondence. However, some applications (such as the browser) may require re-authorization on sites after cleaning.

Regular prevention helps to avoid situations where the system writes "Memory is full" even if you have not downloaded new movies, especially for versions with 64 or 128 GB of internal memory, where every gigabyte counts. MIUI.

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Use Do Not Disturb during deep system cleanup to prevent background processes from creating new temporary files in real time.

Standard cleaning through the “Safety” application

The easiest and safest way to remove garbage is to use a pre-installed tool from Xiaomi.The Security app is already integrated into the firmware and has access to all system folders. To start the procedure, look for the icon with a green shield on your desktop.

Once you open the app, click on the large circular Cleanup button, which automatically scans the device for temporary files, remnants of deleted applications and advertising debris, taking 10 to 30 seconds depending on the amount of data accumulated on the POCO X3.

• 🧹 Click the “Clean” button to remove the garbage found.
• 📁 Select “Memory Cleanup” to see a more detailed list of files.
• 🗑️ In the “Cash” section, you can selectively delete data from heavy applications.
• 🔄 Repeat the procedure once in a while. 1-2 weekly.

The standard cleaner allows you to look deeper, and if you go to Memory Cleanup, you'll see a list of categories: images, videos, documents, and cache, and you can safely delete files from Download or DCIM/.thumbnails, which often swell to huge sizes.

Deep cleaning of the cache of specific applications

Sometimes, the standard scanner can’t handle heavyweights like Telegram, Instagram or TikTok, which cache a huge number of media files, and to clean them, you need to go to the individual settings of each service through the Xiaomi POCO X3 system menu.

Go to Settings → Apps → All apps. In the list that opens, find the program you want (like YouTube). Click on it to open the management page. Here you are interested in the memory or storage button.

In the menu that opens, you'll see two buttons: "Clean" and "Clear Everything." It's important not to confuse their purpose. The "Clear" button (sometimes signed as "Clear Cache") deletes only temporary files. The "Clean Everything" button (or "Reset") deletes the cache along with authorization data and app settings.

Use this method for applications that are not working properly or take up suspiciously much space. For example, if the messenger shows 5 GB of memory, although you did not transfer large files, clearing the cache will return the volume to its original values.

Cleaning the system cache through Recovery Mode

If the phone is unstable, the interface is buggy, or there are frequent reboots, you may need to clean the Dalvik Cache and the system cache, which is done through Recovery Mode, a deeper method that affects files on the Android operating system itself.

To enter this mode on the POCO X3, you need to turn off the smartphone completely. Then press the on and volume button at the same time. Hold them until the MI logo appears, then release the power button, keep the volume up. In a few seconds, the Recovery menu (Main Menu) will appear.

⚠️ Attention: In the Recovery menu, the navigation is done with volume buttons (up/down), and the choice is confirmed by the power button. Be careful not to select Wipe Data if you do not want to reset your phone to factory settings! In the main menu, select Wipe Data, but don't be in a hurry to confirm. We're interested in Clear Cache, which will warn you of the consequences, but cleaning the cache, unlike a complete data reset, will not affect your photos and contacts. Once you've finished, select Reboot to restart. The first run after this cleanup may take longer than usual. The system will re-cache the core services. This is normal behavior that indicates that the procedure has been properly completed. If the performance problem persisted due to errors in system temporary files, it should go away. 📊 How often do you clean your smartphone cache?Daily Once a week Only when your phone brakes Never clean Use third-party utilities to clean your built-in tools MIUI There are many applications in the Google Play Store that specialize in deep file system analysis. Popular options include Files by Google, SD Maid or CCleaner: These programs can find “silent” files — remnants of long-deleted applications, empty folders and incorrect shortcuts. SD Maid, for example, is famous for its tool, CorpseFinder, which finds traces of remote software. However, only install proven high-rated utilities. 📲 Files by Google – a safe option with smart garbage sorting. 🧹 SD Maid – a professional tool for deep cleaning. 🚀 CCleaner is a classic, but requires caution with notifications. 🛡️ Avoid "accelerators" RAM», They often harm Android. When using third-party software on Xiaomi POCO X3 Make sure you give the necessary permissions. Without access to the storage, the program will not be able to see the files. Also make sure that the utility does not implement its own advertising and does not work in the background, consuming the battery. 💡The best third-party utility is one that works on a schedule and does not require constant user intervention, and does not contain intrusive advertising. POCO X3 To avoid going back to the cache cleaning issue too often, you should change your smartphone usage habits, first of all, limit autoplay of videos on social networks, which reduces the amount of cached traffic at times. In the Telegram and WhatsApp settings, you can set up automatic cleaning of the media cache. MIUI There's a memory extension feature that uses a portion of the permanent storage as RAM, and if you have a 64GB version, you'd better turn it off or keep an eye on the space, and a full drive (over 90%) critically slows down the Snapdragon processor's cache. Check the recently deleted section of the gallery regularly. Photos and videos you delete often stay there for up to 30 days, taking up space, and it's also worth turning off syncing folders you don't need constantly in the cloud to avoid duplicate temporary files. Is it safe to use Internet-based cleanup scripts (ADB-The wrong command can delete the system files necessary for the work POCO X3. If you don't understand what each line of code does, it's better to limit yourself to standard methods through settings. Does cleaning the cache affect battery life? Indirectly, yes. When the memory is full, it's harder for the processor to search for free blocks to write, which increases power consumption. A clean system works more efficiently, heats less and therefore consumes battery power more efficiently. Does it need to clean the cache after updating MIUI? Yes, after a major firmware update (for example, with MIUI 12 on 13 or 14) it is strongly recommended to clean the cache through Recovery Mode. This helps avoid conflicts between the old browser versions, can help the loading of the old ones? However, the speed of the 4G/5G or Wi-Fi router connection is not affected by this procedure, because it depends on the carrier and the signal quality. Where do files go after cleaning? The cache files do not move to the basket, they are deleted irrevocably. These are temporary copies, the originals of which (photos in the gallery, documents) are stored in other protected areas of memory and are not affected by the standard cache cleaning.