What does Unicom mean by sending a text message saying speed limit?

Now Unicom implements a secret speed limit. Only if you keep looking for him and bothering him every month will he lift the speed limit for you for one month. In the second month, if you don't go to him, you will be restricted and his system will not be automatically restored to you. You go to him, and he will find various excuses to give you a month's recovery time, and then limit the speed next month. It's a secret speed limit anyway. If you look too much and get bored, you won't look for him again.