If the SMS receiving number is empty, will it show that the sending was successful?

The real empty number can't be successful. If you can't stop, don't say it.

1. The other party has set up call forwarding. If you dial his number, it will automatically go to an empty number.

2. The other party's mobile phone has blacklist function, so add your number to the blacklist.

3. The other party's mobile phone has the function of automatically answering messages, and the message prompt imitates the operator's empty number prompt.