Almost all said that their cell phone was the way they stayed in touch with peers, one-third had used the cell phone to help a peer in need, and about 80% said the phone made them feel safer.

几乎所有人都说，他们用手机与同伴保持联系，三分之一的人曾使用手机帮助有需要的同伴，约80%的人说手机让他们感到更安全。

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A recent study said that 40% of American teens claim to have been in a car when the driver used a cell phone in a way that put people in danger.

最近的一项研究表明，40%的美国青少年称他们遇到过驾驶时玩手机的司机，这让人处于危险之中。

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Should controls include only those who never used a cell phone and exclude those who'd used one only infrequently?

这一组是不是应该只研究从来不用手机的人，而把极少用手机的人排除在外呢？

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Furthermore, no information was available on how many minutes per day a subscriber used the cell phone.

FORBES: Do Cell Phones Cause Brain Cancer? The Diehards Cling Desperately To Opinion

It showed participants in the study who used a cell phone for 10 years or more had doubled the rate of brain glioma, a type of tumor.

CNN: WHO: Cell phone use can increase possible cancer risk

Below are the eight most common activities that a cell phone is used for after making phone calls.

FORBES: What Do People Use Their Cell Phones For Beside Phone Calls?