How to Block a number from Calling you on Android - Phones

Is someone disturbing you through increasing calls? You can silence their phone number and allow other incoming calls. You can do this with a Code.

How to Block someone from calling you with a particular phone number

Dial *35*0000*THE PERSON’S NUMBER#SEND. From then
on the person will not be able to call you again
with that number. Dial *35*0000# to cancel it.

on Which phones will this code work?

This code should work on all devices, from Android to BB to java and Symbian