There is mobile phone reception from the summit of Mount Everest.

Everest has a permanent 3G connection to the summit.
Ncell, the Nepalese subsidiary of Swedish carrier TeliaSonera installed a high-altitude 3G base station at 5,200 meters. The station provides a signal even at the highest point of 8,848 meters.

Although the introduction of phone communication all the way up to the summit is a great achievement, it must take a bit of the magic out of making it up there. Imagine you are standing on the peak admiring the view and the sounds, only to have it interrupted by a ringtone in your pocket or from one of the other climbers.

Everest base station