The number you dialed can't be connected for the time being, so we will send a short message to remind the other party that this call is free. What does that mean? What is the status of the mobile pho

The number you dialed can't be connected for the time being, so we will send a short message to remind the other party that this call is free. What does that mean? What is the status of the mobile phone? That's the SMS calling function.

When the phone you dialed is turned off or cannot be connected, there will be a voice prompt.

People whose phones are turned off or disconnected will receive a text message when they are turned on or connected. The content is: Hello, when did 123456789 call your mobile phone? Please call me back after receiving the SMS notification. It means that when he is turned on, he can know whether anyone has called him during the shutdown time.