No need. Mobile phone secondary card is not required to pay the phone fee. Because the main card is a public charge account, and the secondary card is based on the main card, so in the case of the main card account is not unpaid, the secondary card can be used normally. The main and secondary cards are provided to the customer at the same time - a main card and a secondary card, the main and secondary cards to achieve combined payment, and the main card as the payment account.
The secondary card is bound to the main card, there is no need to charge the phone fee, and all costs are deducted from the main card.