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Yes, it’s on iPhone, you can filter by contact type or what you’re doing:

https://support.apple.com/en-us/HT212608

https://www.theverge.com/2019/9/26/20883331/iphone-do-not-di...

iPhones have a "Silence Unknown Callers" feature now which sends anyone not in contacts straight to voicemail. It's also a bit smarter so if you call someone it will allow them to call back even if they aren't in your contacts list.

https://support.apple.com/en-us/HT207099

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