This application is designed to help you register the fastest and most popular 4G data packages of vinaphone. You just need to select the 4G data plan you want and then press register, the application will automatically Automatically turn on the messaging application in your phone and automatically fill in the necessary information fields such as which switchboard to send to the subscription service, all you need to do is press the send button. Registering for the package you have chosen is very easy. Hope the application is useful to you.