How to block, mark as spam, or unblock phone numbers on Samsung devices

Samsung Galaxy M30 Samsung Galaxy M30
Samsung Galaxy A50 Samsung Galaxy A50
Samsung Galaxy A40 Samsung Galaxy A40
Samsung Galaxy A30 Samsung Galaxy A30
Samsung Galaxy A20 Samsung Galaxy A20
Samsung Galaxy A10 Samsung Galaxy A10
Samsung Galaxy M20 Samsung Galaxy M20
Samsung Galaxy M10 Samsung Galaxy M10
Samsung Galaxy A8s Samsung Galaxy A8s
Samsung Galaxy A6s Samsung Galaxy A6s
Samsung Galaxy A9 (2018) Samsung Galaxy A9 (2018)
Samsung Galaxy A7 (2018) Samsung Galaxy A7 (2018)
Samsung Galaxy Note9 Samsung Galaxy Note9
Samsung Galaxy J6+ Samsung Galaxy J6+
Samsung Galaxy J4 Core Samsung Galaxy J4 Core
Samsung Galaxy J4+ Samsung Galaxy J4+
Samsung Galaxy J2 Core Samsung Galaxy J2 Core
Samsung Galaxy On6 Samsung Galaxy On6
Samsung Galaxy A8 Star (A9 Star) Samsung Galaxy A8 Star (A9 Star)
Samsung Galaxy S Light Luxury Samsung Galaxy S Light Luxury