Block phone calls except from contacts
The method of using Do Not Disturb except for All Contacts is not the best. When the iPhone goes into lock mode, it seems to block all notifications. What I want is to send all phone calls from anyone NOT in my contacts directly to voice mail.
I've been paying for Hiya Premium call blocking and it was working for a while, and now it seems as if the spoofers have figured out how to get around Hiya. So I cancelled my subscription.
Is there a way to block all calls from non-contacts without disabling all other notifications?
iPhone 7, iOS 12