The Mobile World Congress, an industry get-together in Barcelona, certainly saw some sloganeering. But Huawei, Orange and industry body GSMA attempted to flesh out some of the green claims made about 5G
Jean-Marie Chaufray of Orange hailed power-saving features such as "sleep modes", whereby components are switched off when they are not being used, and more energy efficient antennae and other hardware. (Credit: Josep LAGO / AFP)