To block calls and text messages from blocked contacts and allow calls and text messages from allowed contacts:
In the main window of Kaspersky Internet Security, tap > Call & Text Filter > Filter rules.
In the Filter rules screen, tap Standard filtering.
Create a list of blocked contacts. To do this, on the quick launch panel in the main window of Kaspersky Internet Security, tap Call & Text Filter > Blocked contacts.
Create a list of allowed contacts. To this end, on the quick launch panel in the main window of Kaspersky Internet Security, tap Call & Text Filter > Allowed contacts.
If necessary, turn on additional filtering settings. To do this, in Kaspersky Internet Security's main window, tap > Call & Text Filter.
To allow calls and text messages from all contacts in the device phonebook, select the Allow Contacts check box.
To block text messages from phone numbers that contain letters, select the Block non-numeric numbers check box.