It works. Because the main and secondary telecom cards are linked together, the two accounts are bound together and the fees are paid through the main card. Therefore, the account number of the secondary card and the main card are communicated, and it is also possible to pay to the secondary card. The primary and secondary card business is the service provided by the telecom operator, which facilitates the user to bind the mobile phone number, and then the user can serve the secondary card through a primary card.
The sub-card can not charge the phone charge, the phone charge is to recharge the card