How to uninstall Secure Folder in Samsung Galaxy S8 plus?
You can uninstall Secure Folder, including the content and apps in it.
Navigate to Secure Folder → MORE → Settings → Uninstall
Pictorial representation of the above settings are as follows :
a). On Secure Folder main screen, Tap More.
b). Tap Settings.
c). Tap Uninstall. To back up content before uninstalling Secure Folder, tick Move media files out of Secure Folder and tap UNINSTALL. To access data backed from Secure Folder, open the Samsung folder, launch the My Files app, and then tap Internal storage → Secure Folder. Notes saved in Samsung Notes will not be backed up.
CLICK HERE to know how to reinstall preloaded applications after factory reset in Samsung Galaxy S8+ ( SM-G955 ).