How to activate My Zone Offer in Grameenphone(GP) : My Zone tarrif

First of all, Switch on "Cell info" Display from your handset "Settings-->Network" Menu.
Option 1: USSD Dial: *666*1#
Option 2: SMS: Type 1 and send SMS to 6666 

--> Call Rates :
after registration to MY ZONE, Prepaid subscribers can enjoy upto 86% discount on the below mentioned tariff :

Call Type	Call Rate
On Net	30 paisa / 10 second
F&F	20 paisa / 10 second
Community	20 paisa / 10 second

* 15% VAT applicable