What does Vy Class mean in a text message:

is a term. SMS VyClass is a data service management platform and the core management platform for data services, completing the business management and control functions of data services. The data business management platform is mainly responsible for user management, business management and SP management, and provides open interfaces to the outside world. The platform should also provide various statistics and query functions related to data services, such as user statistics, SP and business statistics, billing statistics, etc.