Hii frnds now i will tell u a trick of airtel copun recharge without use of scrath it
just do 2-3 steps:
1) take a airtel copun and dont scratch it
2) dial 1213#
3)now a msg comes = enter pin
4) now enter code which is beyond or below the scrath card with respect 101
means u will enter 101xxxxxxxxxxxx
and hit ok
x = means for the code which is written below the scratch card code
100% working
frnd i know there is no profit of this trick
but try and enjoy