Today, I found that the trumpet of Shenzhen Mobile can send messages to each other.

The trumpet you said should be the trumpet assigned to the virtual network by the group virtual network. You need to join the virtual network to enjoy the discount. If you don't join the group now, I suggest you contact the local customer service 10086 to access the labor, tell her that you want to open a virtual network and ask the key account manager to call you back. In this way, the customer service of 1086 will record your questions and let the responsible key account manager reply to you directly.

However, you need a certain number of people to deal with the group network. You can consult local customer service for details, because there are differences in different regions. In this way, you can contact enough friends to join. In addition, if you are a personal virtual network, he may not open a separate network for you, but he may add you to a virtual network, which will not affect your normal use.