When you get some sms promoting the free-charge, please do not use it.
You will end up wasting your data in downloading such a wast application, even first time coupon does not worth using.
First of all this takes too much time then too many registration process, then too many validation. Post all this once you reach the end page you will see the coupon is not valid? My mony has been deducted but the charge is still not happen as well as the money is also gone. While chasing the customer care, a humanism task I am waiting to get an answer for last 12 hrs. Do not fall for it.