Prolonged smartphone use can cause many problems in our health with people. To begin with, if some workers spend a long time using smartphones at work, it could cause some health issues in their eyes such as myopia or hyperopia. Another effect is to lead to chronic pain. For instance, some surveys told us that a lot of children or adolescents had too much time on their mobile phones playing video games, which caused 20-30% chronic pain in the shoulders and joint arms per year. Finally, such as spending too much time on their cell phones may make their grandparents misunderstand. For example, if youngsters always use their phone time, they may mitigate communication with family members like grandparents. As a result, the older generation might misunderstand their grandchildren and not focus on studying while often playing games.