How to charge for Unicom's main and auxiliary cards in different places?

1, Unicom's main and auxiliary cards are free to play each other locally;

2. The master card and the slave card can't enjoy free mutual calling when they leave the local area;

3. It is free for the secondary card to answer the phone in China;

4. The minutes and traffic included in the main card package will be deducted first for the secondary card to make phone calls and surf the Internet in different places;

5. If the minutes and traffic in the main card package run out, the secondary card will make calls according to the standard tariff of the main card package.