Will Unicom stop automatically after the broadband expires? Will there be arrears?

This depends on the type of broadband you apply for. If it is a wholesale broadband, the network will be automatically disconnected after the expiration, and it can be used again after the renewal, and there will be no cost after the disconnection. After 90 days, the account will be automatically forced to close. If you are a broadband non-wholesale user with a monthly or annual subscription, you don't need to use it after the expiration. You need to bring the original valid certificate to the local self-management office to cancel the account. If you don't apply, you may have a late fee and become a blacklisted user of Unicom. If you are a mobile phone user and the policies of different cities are different, I suggest you consult the local Unicom customer service at 100 10.