In the AI blueprint, allowing computers to have emotions is an important milestone in building emotional machines. In Picard's announcement, such an idea was framed. In this paper, we describe how to develop an emotion system and install it on smartphones to enable them to express emotions. This study also examines users' attitudes and emotions toward emotional information sent by machines, and the influence of emotional systems on user behavior. The purpose of this study is to explore the factors that developers should focus on when developing emotional machines. According to the results of this study, the level of attention paid to emotional information determines the quality of the emotional system, which triggers certain behaviors in users. The study recruited more than 100 people with smartphone experience. During the experiment, participants were free to operate the system and interact with system agents. Most of the participants were interested in, influenced by, and believed that the developed system enabled their smartphones to express emotion. A fairly high percentage of participants viewed emotional notifications provided by AI devices, enabling participants to address adverse smartphone conditions in a timely manner and for system agents to provide users with positive emotional feedback. The findings of this study provide an important contribution to affective computing, realizing the idea of allowing computers to have emotions.