There's no app lock setting in One UI like color os, funfouch os etc. It's very frustrating that the number one UI doesn't have app lock feature.
Some tutorial available in internet provides tips for locking app through secure folder. But it doesn't work for the system app. Moreover, the way it works for the third-party app isn't satisfactory. It needs very tech knowledge. Besides locked apps through secured folder can't access data that isn't stored in private folder.
So please, Try to provide app lock feature in security setting just life other OS.
Samsung killed S Secure 2-3 years back and forced everyone to go with Secure folder which at times even I find complicated to use. So, I'm using it only as a protected storage for sensitive data and not as a Secure app. Samsung never listens.
