When a person sees a missed call and doesn't answer it, he sends a message asking you what's wrong. What do you mean?

There are many situations, which may be one of the following.

(1) I am busy with other things and have no time to call back.

(2) It is not convenient to call back on occasion.

(3) If you feel that the phone is unclear, use words to describe it.

(4) I'm just in a bad mood and don't want to talk.

(5) I made a mistake and sent a text message to cheat you.

(6) The mobile phone is dying.

(7) The mobile phone button just broke.

(8) The mobile phone can't dial the phone suddenly.

(9) Before, the two parties have agreed that after seeing the phone, they will not answer the phone and directly reply to the text message.