Can telecom mother and child cards receive messages from the same person?

No, the main card and the auxiliary card belong to the package and the phone bill, but the two mobile phone cards are independent. For example, if a person sends a short message to the main card point to point, only the main card can receive the message, but the auxiliary card can't. Unless the sender sends a short message to both the main card and the auxiliary card, both the main card and the auxiliary card can receive it.