From Xinhua, via China.org.cn:
The world’s highest mobile phone base station tested successfully on Tuesday on Mount Qomolangma, also known as Mount Everest, at an altitude of 6,500 meters.
The station, run by China Mobile, the largest mobile phone service provider in China, will provide services for mountaineers on the world’s highest peak and the torch relay for the 2008 Beijing Olympic Games.
At 1 p.m. on Tuesday, a worker called the mobile phone of Wang Jianzhou, general manager of China Mobile, via the station and the conversation was clear, said a company spokesman.
He said the station’s construction was “incredibly difficult” as the oxygen level at the site was only 38 percent of that at ground level. [Full Text]
