The ETravelSim Peru eSIM runs on Entel, one of Peru's four national operators. Entel performs strongest in Lima, Arequipa, and along the coast, and is fully usable in Cusco, Aguas Calientes, and the Sacred Valley towns where most travelers spend their time. If your itinerary is heavy on remote-Andes routes or jungle regions like Iquitos and the Amazon basin, expect more variable signal — true for every carrier in those areas. For standard city + Machu Picchu trips, Entel covers the route.