Why is it expensive to apply for a monthly rent for a family card?

Unicom's mobile phone package, after handling the family card (deputy card), the original monthly rent of the main card remains unchanged, but some packages will charge the monthly rent of the family card (deputy card). At the same time, both cards will generate fees, and the tariffs will become higher. Specifically, you can query the detailed list:

1: according to the reply, you can send a free short message 103 to100 to inquire about last month's bill, or send a free short message 104 to 100 10 before inquiring.

2. Log in to the online business hall www. 100 10.com, enter your mobile phone number, password and verification code, and then click "Telephone bill inquiry-bill inquiry-historical bill inquiry" to find the telephone bill for twelve months. : 3. To inquire about historical bills, please click on the download official mobile phone business hall client: /qAdTn to inquire, and the inquiry path is: service (bottom left)-inquiry-:historical bills.