Why is there a lot of information showing your mobile phone number in your short message list? What happened? I am Unicom.

I suggest you send the bill. I think this situation is often due to the automatic receipt service of your mobile phone to write short messages. Every time you send a text message, a multimedia message or a handwritten letter, the system will reply to you and inform you whether it was sent successfully or not. You can receive this message for free, but there may be a corresponding business fee.