On the Incoming call/Incoming SMS screen you can select the action to be taken regarding a telephone number from which an incoming call/SMS is received.
Call&SMS Filter prompts you to select the action in Both lists mode if the telephone number is not included in either the Black List or the White List.
The following actions are available regarding a telephone number from which a call/SMS is received:
The telephone number is added to the Black List. Call&SMS Filter blocks subsequent incoming calls/SMS from this number.
The telephone number is added to the White List. Call&SMS Filter blocks subsequent incoming calls/SMS from this number.
Does not allow you to add the telephone number to either the Black List or the White List. When a subsequent incoming call/SMS is received from this telephone number, Call&SMS Filter prompts you to select the action to take.
Takes you to the Kaspersky Mobile Security 9 help system.