Airtel has introducted some many cheap bundle package to attract more customers to their side.
Because of the immense competition between the network providers. At this moment, Airtel is now dishing out free MBs(1GB) to their customers.
How To Get This 1GB Just send the word JOIN in an SMS to 141. And you will be given the 1GB for free. Which will last for about 30days.. To check your free MB balance, dial *123*133#