Does network short message mean sending messages to each other?

Internet short messages are short messages sent by users of different network operators, such as: Mobile-Unicom, Mobile-Telecom and Unicom-Telecom. Internet short messages will be reflected in the phone bill, including sending and receiving, and will be collected if there is no charge. Short messages between mobile users only reflect the records sent.

Your question: "The mobile phone number sent a text message to Unicom, but Unicom didn't reply. Or the Internet SMS displayed on the bill? " The answer is that Internet messages will be displayed on the bill, regardless of the reply or not.