Using This Trick to reduse Call Charges Upto 20paisa..(its work some areas only)

Step 1: DAIL *122*400# from your number

Step 2: Switch off and on your mobile
20 paisa per mintue to aircel others 30p.
Validity: May be one Year(its not constant)
Charges: May be detected in Rs.4/- in one time

Note: This is work in some areas successfully. check it in your place at own risk.