There is one more notice in the notification bar of Samsung s6edge, which can't be closed.

This icon indicates that the function of S assistant is turned on. Exit mode: click the back button in the S assistant interface, and then end the program through the task manager.

Turn off the mode of opening the S Assistant through the Home key: Settings-Application-Default Application-Device Auxiliary Application-Device Auxiliary Application-Select "None" or other applications (note: some machine opening modes are the system default and cannot be cancelled).