Unicom's telephone broadband has expired.

After Unicom's broadband expires, he may have a SMS reminder, or a staff member will call you.

Normal people are like this. Generally speaking, there is no problem. If it is normal, be sure to remind. If it is normal, it is basically not a big problem, so it will be reminded under normal circumstances. If no one reminds you, you can go to the operator or staff, and they will help you solve it.