Following the recent appearance of the Secure Folder APK for the Galaxy S7 and Galaxy S7 edge, Samsung has officially made the Secure Folder app available from the Galaxy Apps store. Secure Folder is supported by the S7 and S7 edge on Android 7.0 Nougat, and Samsung says more devices will be supported soon. The new Galaxy A (2017) devices already support Secure Folder, so it will be devices like the Galaxy S6 and Galaxy Note 5 that will receive support in the future once they get updated to Nougat.
For those wondering what Secure Folder does, it is basically a more user-friendly version of Samsung's KNOX security solution that lets you create a separate, private space for all your important apps and data. Anything you do inside Secure Folder – creating a document, taking pictures, or making notes – will not be visible during normal operation, which means no one other than you will be able to access this data. Since Secure Folder creates a separate entity for apps used inside, you can have two WhatsApp accounts on a single device, and similarly have two accounts in apps that might not otherwise have support for multiple accounts.
Secure Folder can be downloaded from the Galaxy Apps store if your S7 or S7 edge is running Nougat, and also from our APK archive. Not every region has Nougat on Samsung's current flagships yet, but the company is slowly and surely getting around to global coverage so it shouldn't be long before you are able to start using Secure Folder.
https://www.youtube.com/watch?v=71Zk2b7IaLo