iOS 13 will let users automatically send unknown or spam callers to voicemail, using "Siri intelligence" to recognize numbers from Contacts, Mail, and Messages (Chris Welch/The Verge)

Chris Welch / The Verge:
iOS 13 will let users automatically send unknown or spam callers to voicemail, using “Siri intelligence” to recognize numbers from Contacts, Mail, and Messages  —  Calls from unknown numbers will be automatically sent to voicemail  —  Apple is taking a new step to combat spam calls in iOS 13.