The U.S. athletes participating in the Beijing Winter Olympics to be held next month have imposed a ban on personal cell phones. Because of security concerns. On the 16th (Korean time), the Wall Street Journal and CNET, an American economic daily, advised that the American athletes should not bring their mobile phones to the Beijing Olympics due to security concerns and instead use a temporary feature phone (burner phone). reported Ahead of the Beijing Winter Olympics, a number of countries are already advising people not to carry mobile phones or other smartphones. The Dutch Olympic Committee recommended on the 11th...