I received a text message when I was on the phone, but I couldn't hear the reminder of the text message when I was on the phone.

When he is turned on, when you dial his number, he will receive a text message. ....

The phone is busy, please hold on.

In this way, he will receive a prompt, beep/... when answering the phone, he will hear it again, that is, someone is calling again ... you can hang up this phone and answer it again, or you can keep this phone and answer it again. ...

The call is in progress and cannot be connected. ..

There is no hint.