HACK RECHARGE COUPUNS

UPDATE: TRICK EXPIRED
Recharge coupuns are most often
used in local sim cards.Now you can hack this
cards for free recharge.This trick can be probably
used in all networks.

Buy two 10rs cards of any networks and
scratch the card to see the number.some times
you may get different number and some times
you may find only the last three or four digits of
the both the cards may be different and the
remaining numbers are same,it means that
both the recharge coupons are from same serial
number,so this helps you to hack recharge coupun.
first recharge with the number what you have
and then see the last three orfour digits of the
coupons and if you find only that four digits are
different and just generate some other numbers
of your own which should be nearly next to the
number which have recharged if you have
correctly generate the next number from the
coupon code you have then you use free
recharge.