Unicom has an "accelerated package". What is this?

The national ice cream acceleration package is a flow package to meet the needs of users of national refreshing products to open the speed limit under the speed limit state. When ordering this acceleration package, the speed limit will be turned on, which is 10 RMB 3GB (SMS ordering 10 RMB 1G). After ordering, the speed limit function will be turned on, and the fee will be automatically renewed if it exceeds 3GB. When all traffic reaches 100GB in the current month, the second speed limit will be implemented.