Programmatically Call on a mobile number without user interaction and without user confirmation prompt in iOS

Question

How to call on a mobile number without user interaction and without user confirmation prompt in iOS using Swift / Objective C?

Answer 1

This is not possible for phone calls, but for VoIP is:

To make an outgoing call, an app requests a CXStartCallAction object from its CXCallController object. The action consists of a UUID to uniquely identify the call and a CXHandle object to specify the recipient.

Apple docs