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    Chinese spend an average of three hours a day on her smartphones ranking second in the world after Brazilians who spend two more hours on their phones, according to a survey by a German Internet company.

    In just a few years, smart phones have transformed from a communications tool into a daily necessity allowing people to order food, shop online, manage wealth, and socialize at their fingertips.

    But with such convenience comes overuse and addiction(上瘾), people always feel uncomfortable whenever they are not with their smartphones.

    _________________. A survey of 10000 children ranging from ages 0-5 showed that 80.4% of children use smartphones, and more than half of their parents believe that mobile phones put their children at ease.

    The lack of leisure activities is the main reason for Chinese people's smartphone addiction. Offline activities in China, such as sports, travel, art shows, and reading are not as popular as they are in other countries and regions; on the contrary, China has 668 million netizens (网民), eighty-nine percent of whom surf the Internet with their phones. The Internet is how they mostly kill the time.

    Though smartphones bring entertainment and conveniences, they can have negative effects on health. Staring at a screen for a long period of time can cause eye or spine damage. Smartphones are also associated with lower quality of sleep, and high blood pressure and an elevated heart rate are also associated with lower quality of sleep, and high blood pressure and an elevated heart rate are also unfavorable results.

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