Airtel Free Hello Tune
Dial 543211 and Reach till Manage my Subscription.Then subscribe for one year pack,make sure you have balance of atleast 55 then only you can use this service i mean u can activate 1 year pack .Your balance will become -30.Thats all.You save rs145 + 1 year hello tune .

Top up n Enjoy Hello Tune for one year...!