The topic whether high school students should be allowed to bring mobile phone to school has caused controversy.

是否应该允许中学生带手机上学的话题引发了争论。

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Can I bring my smart phone to school?

我可以把我的智能手机带到学校吗？

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Now, he can use the battery I bring from school to charge his phone at home.

现在，他可以在家里用我从学校带回去的电池给手机充电。

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After countless trips back to the school and even more phone calls I eventually got that bill wiped.

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But, police say, there was no activity on Kopetsky's cell phone after she walked out of school, indicating that the battery went dead or was removed from the phone.

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"They are also involved and engaged with their mobile phones very strongly, " added Takahashi, noting that 96 percent of high school students own a cell phone in Japan.

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