La Samsung Secure Folder It has become one of the biggest attractions One UI is for those who want to protect private content on their mobile without too much hassle. Banking apps, dating apps, compromising photos, or work documents all fit in this encrypted space, which for many users has become essential.
Now, if you're coming from using Secure Folder or are considering using something similar, it's normal to wonder if There are equally safe alternativesWe'll explore the limitations of the latest One UI versions and how much you can rely on third-party options like the "calculator-vault" or apps like Shelter. Let's break it all down calmly and frankly.
What exactly is Samsung's Secure Folder and how does it work?
The Secure Folder is, basically, a isolated and encrypted environment inside your Samsung mobileBuilt on the Samsung Knox security platform, it's not just a simple password-protected folder, but a virtual zone separate from the rest of the system where you can keep apps, files, and data protected from prying eyes and most malware.
Knox is responsible for applying a additional layer of hardware and software protectionThis ensures that anything you put inside the Secure Folder is protected from unauthorized access. Even if someone gets hold of your unlocked phone, they will need a PIN, pattern, password, or biometric data to enter that private environment.
Within this area you can install duplicate applications, so that have two separate instances of the same appOne on your regular phone and another in the Secure Folder. This is very useful for managing, for example, two WhatsApp accounts, two banking apps with different users, or completely separating your personal and professional life.
In addition to apps, Secure Folder allows move photos, videos, documents and other files from the main storage to that encrypted space. These items are no longer visible in the gallery or file managers of the main system and are only shown in the gallery apps and internal files of the Secure Folder.
How to activate and configure Secure Folder on your Galaxy
On Samsung phones with One UI, the Secure Folder is somewhat hidden, so it's helpful to know how to access it. To activate it for the first time, follow these steps: a few very simple steps from system settingsHowever, you will need a Samsung account first (you won't be able to complete it without one).
The typical process in recent versions of One UI is to go to Settings → Security and privacy → More security settings → Secure folderBy tapping there, the system downloads or enables the necessary component and will ask you to log in with your Samsung account to associate that secure space with your identity.
During the initial setup you will need to define a specific locking method for the Secure FolderRegardless of the screen lock method—which can be PIN, pattern, or password—you can also enable fingerprint access. This ensures that even when your phone is unlocked, the Secure Folder remains protected.
Once created, the Secure Folder appears as a more apps in the app drawer and on the home screenWhen you open it, you enter your PIN or use your fingerprint, and you find a "second desktop" with its own app icons, its own gallery, and its own file manager.
From within, by pressing the add button, you will be able to Import already installed apps or download new apps directly to the Secure Folder from Galaxy Store or Google Play, always in isolation from the main system.
Protect private photos, files, and apps within the Secure Folder
Once up and running, the most common use is Protect sensitive content you don't want others to see. If you lend your phone or if someone snoops through it when it's unlocked. That includes personal photos, private videos, sensitive documents, and any app with sensitive data.
To move photos and videos, simply go to the Samsung Gallery, select one or more items and use the option “Move to Secure Folder" From the three-dot menu. These images disappear from the regular gallery and will only be visible if you access the Secure Folder's internal gallery.
The same applies to files: from Samsung's "My Files" app, you can Send documents, PDFs, entire folders, and other formats to the Secure Folder, so that they are out of sight and reach of other system apps.
As for apps, you can protect online banking, work apps, secondary messaging services, or any tool you want to keep under lock and key. The beauty of it is that Everything you do within those apps stays in that isolated environment.with their own data, settings and accounts.
This makes the Secure Folder a kind of "phone within a phone" that It allows you to lend the device without fear.Even if you've unlocked it so someone can call, play games, or check social media, your truly sensitive information will remain safe behind another layer of authentication.
Camouflage, concealment, and encryption options in One UI
One interesting feature of the Secure Folder is that you can disguise their presence by changing their icon and nameWithin the folder's settings, in the three-dot menu, you'll see the "Camouflage" option, which allows you to choose a different icon and a less suspicious name.
So, instead of an icon that screams “private stuff here”, you can put a bland name and an unremarkable icon among your usual apps. It's not foolproof, but it does reduce the curiosity of anyone glancing at your home screen.
In addition to camouflage, there is the possibility of completely hide the Secure Folder from the app drawer and home screenFrom Secure Folder Settings you can uncheck the “Show Secure Folder” option, so that access is only possible by going to Settings → Biometrics and security → Secure Folder.
Starting with certain versions of One UI (the content mentions One UI 8.0, although the actual commercial numbering is different), the function that was previously called “Encrypt” is renamed “Hide Secure Folder” in the quick settings panelWhen you disable Secure Folder from the corresponding icon, two actions are combined: encryption and hiding the shortcut.
In practice, this means that The Secure Folder icon disappearsThe apps inside will temporarily stop working, and you won't receive notifications or see those apps in settings or sharing menus while it's hidden.
In the internal settings you can also configure the automatic locking after a period of inactivityYou can choose to have the Secure Folder lock itself after a certain interval (5, 10 or 30 minutes, for example) or to always lock when you turn off or restart your phone, reinforcing security against loss or theft.
Backup and recovery of access to the Secure Folder
Since it is an isolated environment, Samsung allows you to perform specific backups of Secure Folder data linked to your Samsung account. This reduces the risk of losing your most sensitive data if you change phones or if you have to perform a factory reset.
From Secure Folder Settings, in the "Copy and restore" section, you can choose which sections you want to include in the back (for example, apps, documents, internal gallery, etc.) and launch the backup using your Samsung account as the destination.
The system will ask for your credentials again before starting, and once the process is complete, You will have a cloud backup of that encrypted environmentOn a new or reset Samsung device, you'll just need to log in with the same account and restore the backup to recover that "digital safe".
If you forget your PIN, pattern, or password, Samsung offers a recovery procedure linked to your Samsung accountFirst, you open the Secure Folder and enter what you think is your code; when the attempt fails, the option "Forgot your PIN?" or similar appears.
If you click on that option and then on “Reset”, the system will ask you to Your Samsung account password to verify your identityAfter verification, you can set a new locking method and regain access without losing the encrypted content within the Secure Folder.
Recent limitations and issues: file access bug in One UI
Not everything is perfect: with a recent update to One UI (the text mentions One UI 8 on Android 16 on a Galaxy A54 5G), several users have reported a serious flaw related to accessing files from browsers within the Secure FolderThis bug affects how apps see the internal storage of the secure environment.
The problem occurs when you open a browser (Chrome, Brave, Edge, Opera, Firefox) installed inside the Secure Folder and try to upload an image or video to a websiteFor example, services like imgbb or other file upload sites.
When you tap the upload button and choose “Photos and videos”, the selector that opens It does not display the Secure Folder Gallery or the "My Files" section of that environment.but only the gallery apps and main system files, outside the Secure Folder sandbox.
This has two important consequences: on the one hand, You cannot easily access the files you have saved inside the Secure Folder to upload them to the webOn the other hand, the isolation is partially broken, since the apps inside the Secure Folder begin to interact with external storage.
Several users have reported this behavior in official Samsung forums and repositories like GitHubThis indicates that it's not an isolated case. Many threads describe the exact same symptom after updating, and it's considered a bug in the Secure Folder file system in that version of One UI.
Until Samsung releases a definitive patch, the only reliable solution is Use Secure Folder's built-in applications (such as your email client, messaging app, or other compatible apps) to share filesAvoiding workflows that pull the file selector "from outside." This is an issue to consider if you rely heavily on uploading private content from that environment.
What does the Secure Folder do and not do compared to other Shelter-type solutions?
Many users compare Secure Folder to alternatives like Shelter, which create a separate work profile using Android's enterprise capabilitiesThe idea is similar: to have an isolated container where applications can be duplicated and data separated.
However, there are important differences. Shelter recreates a work profile using standard Android APIs, but, as some users have noted, It does not offer the same layer of password protection about the container itself that Samsung's Secure Folder does provide, integrating with the locking system and Knox.
Furthermore, Shelter and similar solutions don't always meet all the advanced features that many people look for, such as completely hide apps from the main app drawer, manage notifications with different privacy levels or have internal galleries truly separate from the general gallery.
There is also a debate about privacy: some users distrust the Secure Folder because It requires the use of a Samsung account, which associates your identity with what you store in that environment.Others, on the contrary, prefer to rely on Knox and a large manufacturer rather than an independent developer or an app of unclear origin.
Regarding Shelter, it has been noted that it was developed in China and that, as is the case with many virtual spaces of that origin, There is a fear that they may collect or send data in the backgroundAlthough Shelter's code is open source, not everyone feels comfortable installing a sandbox of this kind without thoroughly reviewing the project.
As for strong "virtual machine" type isolation, neither Shelter nor Samsung's Secure Folder will do the trick. They completely hide hardware information or the device ID to the apps that run within it. From the perspective of many applications, they continue running on the same phone, just in a different profile or context.
Is there a mobile sandbox with total isolation like a virtual machine?
Some advanced users are looking for something more radical: a solution that works almost like a virtual machine inside the mobile device, with a falsified or hidden device identity, absolute control of data traffic, password lock and total isolation between internal and external apps.
In an ideal scenario, the desired outcome would be for the apps within the sandbox They couldn't see the actual device or the real hardware.that everything they receive is virtualized. Furthermore, they would be expected to be unable to communicate externally without explicit permission, and that the sandbox itself would not send data to the developer's servers.
It is also appreciated that the solution requires a specific password to unlock the container and that its content remains completely isolated from the rest of the system. This way, neither external apps could read what's inside, nor could internal apps "escape" without user authorization.
Currently, in standard Android, there is no mainstream solution that fully meets all of that requirements with the power of a desktop VM. GrapheneOS and other privacy-focused systems Yes, they offer profiles with greater isolation and improved sandbox modes (for example, for Google Play Services), but they require changing ROMs and ecosystems.
On Samsung devices with official firmware, the most robust and user-friendly alternative for the average user remains Secure Folder, although I didn't go to that extreme of total hardware virtualization or granular control of each connectionIt's a good balance between practical security and usability, but it doesn't replace a hypervisor or a Qubes-type system.
Apps like “app hider” or “calculator-vault”: what they offer and what dangers they pose
Google Play is full of apps like Hide it Pro, NQ Vault, or calculators that hide photos, which promise hide apps, files, and notifications behind a camouflaged interfaceAt first glance, they sound exactly like what many users are looking for as an alternative to Secure Folder.
Some of these apps allow you to hide icons, prevent an application from appearing in the app drawer, and redirect screenshots and photos to a hidden internal gallery instead of storing them in the general gallery. They even include options to receive discreet notifications or only show the icon of the originating app without the message content.
In theory, you could unlock that "vault" and have apps open in parallel alongside those of the main system until you block it again, with support for running apps in "dual mode" (two instances of the same app, like two WhatsApps with different accounts).
The big problem is that, unlike Secure Folder, many of these third-party tools They are not backed by a security platform equivalent to Samsung KnoxThey usually rely on interface tricks, package renaming, PIN locking, and launcher-level hiding, but the actual isolation is usually much lower.
Furthermore, having to grant them deep permissions to manage storage, notifications, or even accessibility, They become a lucrative target for data collection or intrusive advertising.If the company behind the app is not transparent or has a poor privacy track record, the risk increases significantly.
When, in addition, you need to log in to those hidden apps with sensitive credentials (bank accounts, email, corporate services)The level of trust you should demand skyrockets. Relying on a little-known calculator-vault as an intermediary between your data and the system is hardly the wisest course of action.
Therefore, from a security and privacy perspective, apps of this type must be treated with extreme caution, and it is advisable to prioritize solutions integrated into the system (Secure Folder, official work profiles, native private spaces) rather than entrusting your data to applications that thrive on obfuscation and marketing.
Practical comparison: Secure Folder vs. alternatives and which use makes the most sense
If what you're looking for is to hide apps so that They don't appear in the main drawer or in searchesThe Secure Folder solves this by moving those apps to a secure container, where they are only displayed after authentication. Some third-party apps can simulate something similar, but usually without such clear isolation.
Regarding notifications, the Secure Folder allows receive notifications from internal apps in a configurable wayshowing or hiding the content. App-vaults usually promise something similar, although many rely on notification tricks that can be unstable or break with system updates.
Regarding screenshots and hidden galleries, the Secure Folder already consolidates them. the images taken within that environment in its own internal galleryseparate from the main one. Third-party apps can redirect files, but they often leave traces in paths accessible by other apps.
If you want to run dual applications, Secure Folder lets you install a second instance completely isolated from any appWhile some manufacturers offer less robust "dual app" features, app vaults can offer app cloning, but at the expense of permissions and security.
Finally, if we're talking about extreme sandboxing with device ID spoofing, total blocking of outgoing traffic, and VM-like isolation, Neither Secure Folder nor typical app hiding apps fully fulfill that fantasyFor that, you have to look at more specific systems like GrapheneOS and advanced configurations that go beyond common use.
In practice, Samsung's Secure Folder offers a very reasonable balance between privacy, security and ease of use For most users, it's the best solution, while many third-party alternatives add more risk than real protection. Considering occasional bugs and Android's inherent limitations, it remains, to this day, one of the best ways to create a "private space" on your Galaxy without having to go crazy with custom ROMs, rooting, or experimental solutions.
