How can I use private APIs to block incoming calls in an iOS application?

Question

I would like to be able to selectively block incoming calls in an iOS application I\'m writing. This is intended for personal use, not the App Store, so I\'m fine with usin

Answer 1

Since iOS 10.0+ there is CallKit which includes a Call Blocking and Identification API: https://developer.apple.com/documentation/callkit

(Information for people which find this in 2020 or in the future)