Is the mobile phone information transmission report available only when the other party receives the information? Did you turn off your phone? Or just open the information?

There are two kinds of reports on mobile phones. One is your sending report, reporting that you sent it successfully. Whether he turned it on or not, whether he received it, that's another matter. The other is to receive a report (some mobile phones may not have this function), and this report will not appear until the other party successfully receives your message. As for whether the other party saw it or not, there should be no such report.