As the development of modern technology,Smartphone has become
quite popular all over the world with its outstanding functions.People
can use phones to surf the Internet,update their personal micro blog,and
upload their latest pictures at any place,anytime.It seems that smart
phones have already become an indispensable part in people's daily
lives.However,some people are indulging in smart phones,which already
have side-effect on their normal life.
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