Unicom's traffic package is used up. Can the primary and secondary cards receive SMS alerts?

If you are handling Unicom's primary and secondary card package, all the prompt information of the comprehensive account will be sent to the primary card number, and the secondary card cannot receive it. Users can log in to the online business hall and mobile phone business hall of China Unicom with their mobile phone number and service password to inquire about the traffic details, or they can dial10013 to inquire about the local traffic usage, or they can send free short messages from 5 102 to 100 10 to inquire about the traffic details.