Who knows how to send invisible messages, or anonymous messages, that is, the other party can see my messages, but can't see my mobile phone number?

I know a good method. You should sort out the contents to be sent first, and then send them to 9393+ the other party's mobile phone number, such as 9393 1380 1234567. The other party can see what you wrote, and the sender number that can be displayed is a number that has nothing to do with you, which is very easy to use.

Note: Before use, you need to send WA to 9393 for registration, and you can play some other functions in 6 yuan every month. Spend ten cents on communication fee (mobile or Unicom) each time.

Mobile users can send messages at will, and Unicom users now need to register with each other.

I hope this solution will satisfy you.