s secure is not compatible with A and s series by the way ...it has Knox security hence secure folder is there so no s secure in A series and no secure folder in m series exept m10s model
bro try my method .....I know that if you will use any 3rd party app locker also and if someone will go to app settings and erase data of that app locker so it has no value to use ...so if you want to hide some particular or confidential apps then just install it inside secure folder then it will safe there and you can use it by open secure folder
