Can the information of the telephone secondary card be seen by the main card?

The information of the telephone secondary card can be seen by the main card. The information or call record sent by the secondary card using the calling number of the main card will be displayed in the bill of the main card, so the main card can see the information content sent by the secondary card to others and the record of whom to call. In addition to the information sent by the secondary card and the call record will be displayed in the bill of the main card, the main card can also query related detailed information through the bill, such as the time, duration and recipient of the short message.