Send a short message, press the check box and send it to others. Can you see it?

I should be able to see it. As long as it is sent out, people can see it.

There is no way to know if the other party has seen your message when sending a text message. Because you can't see other people's mobile phones, you can only see your own, so you can't know if the other party has seen it.

Open and send the report, and the other party will be reminded when receiving it. Just have a look at the sending report. Enter the SMS interface, click the function key, enter the settings, and check Send Report in the SMS settings. The other party has received it, and there should be a report delivered, but it is not certain whether the other party has read it.