Pin the caller's hang-up prompt

1. Software application mode, that is, you can receive another software when you open it, but you can't receive it when you close it;

2. SMS mode, SMS is to send the content to the other party's mobile phone and remind the other party in the application;

3. Telephone mode: After the telephone prompt is sent, the system will call the other party, remind the other party through voice broadcast, and remind the other party in the application. If the other party does not answer or hang up, it will not be reminded by phone again;