How to block incoming phone calls, text messages and email in Objective C

Question

Is there any way to block incoming phone calls, text messages and email. Will appstore allows these kind of applications on appstore. Please help me if this is possible or not.

Answer 1

Update: Never say never :) iOS 10 introduced this possiblity, see other answers.

Original:

NO, this is not possible with public API (and non-jailbroken devices)

And NO, Apple would never allow any app that disrupts the expected standard system behavior