How many days can I use broadband after it expires?

Five days. According to the query of China Mobile official website, the mobile broadband will not stop automatically after it expires, but will enter the state of broadband shutdown and number protection for 5 days, during which users can continue to use network services, and all broadband can be used for 5 days after it expires. After the broadband expires, the operator will send a reminder message or email to the user, telling the expiration time and the amount of renewal fee to be paid, and will also provide broadband downtime for a certain period of time.