The short message is waiting to be sent. Did the other party receive it?

I didn't receive it. The interface that the mobile phone shows that it is sending does not disappear until it is sent, which means that the message sent by the user is unsuccessful, so the short message to be sent has not been received by the other party. Short message is text or digital information sent or received directly by users through mobile phones or other telecommunication terminals. The number of characters that users can send and receive SMS at a time is 160 English or numeric characters or 70 Chinese characters.