Airtel double double promo.

For Airtel 4mb data bundle, dial *141*11*9*2# to get 8mb (#50.00)
For Airtel 10mb data bundle, dial *141*11*1*2# to get 20mb
(#100.00)
For Airtel 25mb data bundle, dial *141*11*8*2# to get 50mb
(#200.00)
For Airtel 50mb data bundle, dial *141*11*2*2# to get 100mb
(#300.00)
For Airtel 80mb data bundle, dial *141*11*3*2# to get 160mb
(#500.00)
For other Airtel data bundles not listed here, just add *2 before # in
their subscription code and dial to get double of your data. For
example, the subscription code for 10mb is *141*11*1#, just dial
*141*11*1*2# and you will receive 20mb.