Activate Call Block Free On Your Mobile

Many of us want to activate call block service for unwanted caller. But it costs you monthly. Today I will show you a trick with which you can block your caller. Now I am writing the trick.
At first go to the settings > call settings > call divert > Divert when busy > Activate > To other number 

Now you have to put the numbers given below according to Operator.
For ROBI  8121
For Grameenphone 1266
For Banglalink 770
and for Airtel  789
That’s all.
Now your call block is active. When your unwanted caller calls you, you just press cancel (Red) button. It makes your caller’s call receieved. (It will cost him call charge)
Cancellation: If you want to cancel it, go to settings > call settings > call divert > Cancel all divert.
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