The main card and the sub-card charge are the same, the main card charge the sub-card charge the sub-card charge the main card is the same, so rest assured that it does not matter how much it is charged anyway, it is equivalent to a part of the money, several cards are used whether it is telecommunications, Unicom and mobile are the same, the difference between the main card and the sub-card is the time of the main card, the call time, the main card. Or more traffic than other cards
Useful, the main and secondary card consumption is interlinked. Therefore, after the sub-card is charged, the main card can also be used.