In the era when smartphones are popular, we send and receive information every day  Electronic communication between people has become a unique way of communication in this era  When facing important people or relationships, many people often send messages  Later, they expect to be returned by seconds
If they are not returned by seconds, they will have a sense of suspicion or abandonment, and thus fall into deep trouble and anxiety
Current technology can achieve instant communication with smartphones, which is convenient and fast, and basically free