Why is there no charge for mobile and multi-number?

Mobile and multi-numbers are both minor numbers, so you can enjoy the main number * * * package, and the minor number is not charged separately. According to the inquired information, the number is the secondary number of China Mobile. Just like a real mobile phone card, the charges for calls and short multimedia messages generated during the use of the secondary number are paid by the primary number according to the current tariff standard of the primary number, but the entity secondary number sends external network messages, so you can enjoy the primary number * * *, and the secondary number is not charged separately. China Mobile generally refers to China Mobile Communications Group Co., Ltd., referred to as China Mobile. It is a central enterprise established on April 20, 2000 according to the overall deployment of the national telecommunications system reform.