How high can the 5G signal be? Even on Mount Everest, which is 5,300 meters above sea level, China's 5G base stations can be seen. How deep can the 5G signal be? Now even if it is 534 meters underground, the 5G telephone network will not be interrupted. The 5G network rely on a huge network of base stations. At present, China has built more than 700 thousand 5G base stations, more than twice the total number of other countries in the world.