One function in my short message is to ask for a reply and send a report. What do they mean?

No charge. Some mobile phones have this function, and some don't. In other words, after you send a text message to someone, the other person's mobile phone will display that you ask for a reply. Of course, it doesn't matter if the other party doesn't reply. There are two kinds of sending reports. One is that when you send a message to someone successfully, the sending report will be displayed on your mobile phone, and the other is that when the other party sees your message, it will send a report to your mobile phone. Sony Ericsson's mobile phone is like this.