This is a product that is long overdue. We are living with modern technology while using centuries old methods. Not everything has to change. Sometimes the old way is better. But when it comes to efficiency or a service that deals with millions/billions of masses, the newest is the way to go.

The real obstacle is getting the initial adoption for the app. The features are great with pre-paid and post-paid paying. The concern here is the privacy risks as I don't see any mention of any cryptography/encryption.