Recent reports from France and Sweden find that those who have used mobile phones for ten or more years have double the risk of brain cancer. Also troubling is the fact that the limit for microwave emission from mobile phones is 500 times lower in Switzerland and China than in the US.
例如，手机的长期安全性仍然未能得到证实。在1990年代早期吹捧其安全性的研究中并没有纳入商务使用者。最近来自法国和瑞典的研究报告表明那些使用手机达十年或更长时间的人患脑癌的风险增加了一倍。同样令人不安的是，瑞士和中国手机微波辐射的法定极限比美国的低五百倍。