New Xiaomi file found: how to remove and remove system debris

Users of Xiaomi, Redmi and POCO smartphones often encounter an unexpected system notification that says, “New file found” or “Found new file.” This message can appear spontaneously even when you haven’t downloaded anything new, causing confusion and concerns for the security of the device. In most cases, it is not a virus, but a regular operation of the MIUI or HyperOS shell, which scans internal memory for changes.

But you shouldn't ignore this signal, because constant alerts quickly land the battery and annoy you. Often the source of the problem is hidden system folders, messenger cache or erroneous links to already deleted data. The main trigger in 80% of cases is the.thumbnails folder in the DCIM directory, which stores the thumbnails of the gallery. Understanding the nature of this file will help you quickly get rid of intrusive notification and free up space.

In this detailed guide, we’ll look at why the system sees “new” files where they don’t seem to be, and suggest a few ways to solve the problem. We’ll look at both standard conductor settings and deeper methods of cleaning through a computer or third-party utilities.

Reasons for System Notification

The phenomenon of constant notification of a new file on Xiaomi is usually associated with the operation of the system service Media Scanner. This component is responsible for indexing multimedia content: photos, music and videos. When you delete a file, but its tail remains in the media database, or when the system detects changes in hidden directories, it reacts with a pop-up.

Another common reason is the activity of background apps: Messengers like Telegram or WhatsApp constantly create and delete temporary files, which can be perceived by the shell as the appearance of a new object, and it is worth checking whether the function of “Secure folder” or “Hidden files”, access to which the system can interpret ambiguously, is included.

⚠️ Note: If the notification is accompanied by a sharp heating of the case or spontaneous opening of applications, this may indicate malware. In this case, a simple cleaning of the cache will not help, you will need a full antivirus check.

The following are the main sources of false system positives:

• 📁 Accumulation of thumbnails in the.thumbnails system folder that causes cyclic verification.
• 🔄 Synchronization errors of the Mi Cloud or Google Photos.
• 📲 Activities of “junk” cleaning apps that create temporary files for analysis.
• 🗑️ Incomplete removal of large amounts of data when the file system fails to update the indexes.

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Periodic reboot of the smartphone (once every 3-4 days) helps the system correctly recalculate the file indexes and eliminate false notifications without interfering with the settings.

Search for source through a standard conductor

The first step to fix the problem is to find the culprit yourself. Xiaomi's File Manager app has hidden settings that allow you to see system files, and you need to activate the hidden object mapping to find the source of the notification.

Open the Explorer app, click on the three menu bars in the top corner and select Settings. In the list that opens, find the Show Hidden Files switch and activate it. Now, when you go back to the root directory, you'll see translucent folders whose names start with a dot.

Pay special attention to the following directories, where the most often hidden "garbage":

• 👁️ The.thumbnails folder inside DCIM — Here are the sketches of the photos.
• 📥 Download or Download folder – often contains forgotten installation files APK.
• 📱 Messenger directories (Android/media/com.whatsapp, Telegram with cache.

If you find a file with a recent change date that you don't recognize, try to delete it. If the system says that the file is occupied or protected, go to the next section of the instructions. Android/data.

Delete the.thumbnails folder and clear the cache

As mentioned, the.thumbnails folder is the main candidate for deletion, and it can grow to several gigabytes, taking up space and causing constant activity, and deleting this folder is safe: it will be created again automatically, but it will be empty when you open the gallery.

To delete it, go to Internal Memory → DCIM →.thumbnails. Select all the contents or the folder itself and click Delete. If the standard Explorer refuses to delete files due to lack of rights or error, connect the phone to your computer in file transfer mode (MTP).

Cleaning path: /storage/emulated/0/DCIM/.thumbnails/

When connecting to a PC, open the device as an external drive, find the specified directory and clear it through the Windows file manager or macOS. This is guaranteed to delete the files that are locked by the system.

⚠️ Note: After deleting the.thumbnails folder, opening the gallery for the first time may take longer than usual.The system will regenerate thumbnails for your photos.

Additionally, it is worth clearing the cache of the Gallery and Explorer application itself:

1. Go to Settings → Applications → All applications.
2. Find the Gallery and the Guide.
3. Select Memory and click Clear Cache (not to be confused with Clear All Data, otherwise the settings may be confused).

Disabling notifications through system settings

If deleting files didn't work, and the notification keeps coming, you can try disabling the alerts themselves from the system components, and that won't solve the problem of garbage accumulation, but it will remove the visual stimulus, and we will block notifications from the media scanner service.

On current versions of MIUI 12/13/14 and HyperOS, the path may be slightly different. Go to Settings, search for Notifications, or search for Notifications and Status Bar. Next, select Notification Management.

In the application list, find system processes.

• 🔍 Application "Security" (Security).
• 🔍 Application "Conductor" (File Manager).
• 🔍 System process "Media Storage" or "Multimedia Storage».

Once you have access to the notification settings of your chosen app, turn off the Recommendations, Cleanup or New Files categories. Be careful: disabling notifications from the Security service can hide important virus warnings, so it’s best to turn off only specific types of alerts if the interface allows.

Also check the settings of the Explorer app itself inside its menu:

1. Open the Conductor.
2. Click on the menu (three dots or stripes) → “Settings”.
3. Find the item “Show notifications about new files” and deactivate it.

Using a computer for deep cleaning

Mobile file managers often have limited access rights to system partitions, and a computer is recommended to radically solve the problem, allowing you to see the phone's file system as it is, without masking system files.

Connect your smartphone to your PC. On your phone screen, select File Transfer (MTP) mode. On your computer, open My Computer and find your device. For full analysis, use Total Commander or the standard Explorer with hidden file display enabled.

When working through a computer, the data rate is higher, which speeds up the process of removing large amounts of debris. After cleaning, be sure to safely remove the device before turning off the cable so as not to damage the file system.

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Using a PC to clean the file system is the most reliable method, as the computer does not block files that can be occupied by system processes on the phone.

If the problem persists, the file system may be damaged, and resetting will help, but this is a last resort.

Prevention and additional recommendations

That the "new file found" problem hasn't returned, it's recommended to follow simple digital hygiene rules: Check the Downloads folder regularly and delete old app installers. Don't store files on your phone that you no longer need.

Use the built-in Cleanup feature in Xiaomi’s Security app, which automatically finds duplicates, unused apps, and large files, and launch it at least once a week.

⚠️ Warning: Don't install third-party "accelerators" and "cleaners" from Play Market. they often create more problems than they solve, with intrusive advertising and background work that generates garbage itself.

Also keep an eye out for system updates. Xiaomi engineers regularly release patches to fix file system errors. Go to Settings → About phone and check for updates.

If you use an SD card, try extracting it and checking for errors through your computer. A damaged memory card often causes cyclical scans and false notifications of new files.

Frequently Asked Questions (FAQ)