Call the other party's mobile phone, prompting to turn it off, but send a text message, and there is a message receipt saying that the text message has been delivered. What's going on here?

China Mobile is generally like this. When you set the sending report and ask for a reply, if the other party's mobile phone is turned off, your mobile phone will prompt that the message has been sent, but your mobile phone will not receive the sent sending report until the other party's mobile phone is turned on and receives your short message. If the message is not sent, it needs to be sent again. It should be because the other party's mobile phone is not in the service area or can't receive the signal. It's not a call forwarding problem. Use flight mode for the first time when boarding. The flight mode is closed when the telephone communication function is turned on, that is, you can't answer the phone and send text messages. When someone calls you, they will prompt you to turn off your phone. Of course, you can't receive other people's messages, have no signal contact with the base station, and don't try to contact the base station. Nbsp Because cell phone signals will interfere with the electronic equipment on the plane, it is not allowed to turn on the cell phone on the plane. In this mode, the related functions of mobile phone signal are turned off, and the mobile phone can continue to use other functions, such as checking the phone book and enjoying songs, articles and movies on the mobile phone. Nbsp So it is called flight mode, also called flight mode. Nbsp; Most of the power of the mobile phone is consumed by the signal. Turn off the signal in flight mode, which is very power-saving. NbspN80 also has this function. Click the power off button and select "Offline", which is equivalent to viewing the original post in flight mode >; & gt