Samsung Galaxy C9 Pro Manual page 40

Basics
Secure Folder is a separate, secured storage area. The data in Secure Folder cannot be
transferred to other devices via unapproved sharing methods, such as USB or Wi-Fi
Direct. Attempting to customise the operating system or modifying software will
cause Secure Folder to be automatically locked and inaccessible. Before saving data in
Secure Folder, make sure to back up a copy of the data in another secure location.
Creating Secure Folder
On the Apps screen, tap Settings → Lock screen and security → Secure Folder.
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Tap SIGN IN and sign in to your Samsung account.
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Select a lock method to use for Secure Folder and follow the on-screen instructions to
complete the setup.
A shortcut to Secure Folder will be added to the Home screen.
If you forget your Secure Folder unlock code, you can reset it using your Samsung
account. Tap the reset button that appears when an incorrect unlock code is entered,
and enter your Samsung account password.
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