Will the secondary card send a message to the main card when browsing the bad website?

No, according to public information, the short message on the secondary card cannot be received by the main card. The two numbers exist independently, and the only connection is the sharing of the package. On the basis of the main card, the secondary card provides customers with both the main card and the secondary card. The main and auxiliary cards realize combined payment, and the main card is used as the payment account.