Bolivia has three main operators: Tigo Bolivia, Entel Bolivia, and Viva (NuevaTel). Entel has the most extensive coverage in highland areas, including the Altiplano and the routes to Uyuni. Tigo dominates in Santa Cruz and lowland cities. Viva provides additional urban coverage in La Paz and Cochabamba.
La Paz and El Alto have 4G coverage across main neighborhoods. The Witches Market, Plaza Murillo, and the Teleférico cable car areas are well covered. Cochabamba has solid 4G throughout the city. Santa Cruz de la Sierra has strong 4G and some limited 5G in the city center.
The Salar de Uyuni is one of the most challenging coverage zones in South America. The salt flat itself has very weak or no signal across most of its surface. The town of Uyuni has 3G to 4G. Tour groups should download offline maps of the salt flat and surrounding area before departure from Uyuni. The Amazon basin towns of Rurrenabaque and Riberalta have weak 3G coverage. Roads between highland cities may drop to 2G in valley sections.