Instructions for blocking, marking as spam or unblocking phone numbers on HiSense devices

HiSense H20 HiSense H20
HiSense H18 HiSense H18
HiSense U965 HiSense U965
HiSense H12 HiSense H12
HiSense H12 Lite HiSense H12 Lite
HiSense A6 HiSense A6
HiSense King Kong 4 HiSense King Kong 4
HiSense King Kong 4 Pro HiSense King Kong 4 Pro