In the era of smartphone popularity, we send and receive messages every day  Electronic information communication between people has become a unique way of communication in today's era  In the face of important people or relationships, many people often expect to be answered in seconds after sending a message
if not, they will have a sense of skepticism or abandonment and fall into deep annoyance and anxiety
The current technology has been able to achieve instant messaging of smart phones. It is convenient, fast and basically free.