Montevideo: As the capital, Montevideo boasts excellent 4G and growing 5G coverage across its key districts like Ciudad Vieja, Pocitos, and Carrasco. The signal is consistently strong along the famous Rambla coastal avenue. While indoor coverage in modern buildings is reliable, some older, thick-walled colonial structures in the historic center may have slightly weaker reception.

Punta del Este: This premier beach resort has robust mobile coverage, especially during the peak summer season when networks are reinforced for tourists. You'll find a strong signal across the peninsula, in popular areas like La Barra, and along the main beaches such as Playa Mansa and Playa Brava. Major hotels and shopping centers offer excellent indoor connectivity.

Colonia del Sacramento: Connectivity is very good throughout this historic city, with reliable 4G service in the UNESCO-listed Barrio Histórico and at the busy Buquebus ferry terminal. The thick stone walls of some centuries-old inns and restaurants can occasionally dampen the signal indoors, but for the most part, staying connected is easy.

Salto: In Uruguay's interior, Salto offers dependable 4G coverage within the main city limits and surrounding tourist areas like the Termas del Daymán hot springs. While the urban core is well-served, the signal may become less consistent as you travel further into the rural agricultural regions outside the city.

Main National Routes (Rutas Nacionales): Major corridors like Ruta 1 (Montevideo to Colonia), Ruta Interbalnearia (to Punta del Este), and the initial sections of Ruta 5 north from the capital offer reliable 4G/LTE service. As you travel deeper into the interior on routes such as Ruta 26 or the northern parts of Ruta 3, expect signal to weaken, drop to 3G, or disappear entirely in remote stretches between towns.

Intercity Bus Services: As Uruguay's primary mode of long-distance travel, buses have good connectivity along the southern coastal strip and major north-south routes. However, on journeys crossing the rural interior, particularly through the departments of Tacuarembó, Cerro Largo, and Treinta y Tres, you will likely encounter extended periods of weak or no signal.

Cuchilla Grande Hills: While Uruguay has no major mountain ranges, the rolling terrain of the Cuchilla Grande hill range, which runs through the center of the country, can interfere with mobile signals. Driving through rural areas in the departments of Lavalleja, Florida, and Durazno away from main towns often results in inconsistent data speeds and dropped calls.

Northern and Eastern Regions: The most significant coverage gaps are found in the sparsely populated agricultural departments in the north (Artigas, Rivera, Salto) and east (Rocha, Cerro Largo). Once you leave the departmental capitals and main highways in these areas, mobile service becomes highly unpredictable, making offline maps essential for navigation.

Rocha Coastal Route (Ruta 10): The popular scenic route connecting the beach towns of Rocha, including La Paloma and Cabo Polonio, generally provides strong coverage within the towns themselves. However, the connecting stretches of road between these resorts are known for having spotty service, with signal frequently dropping out for several kilometers at a time.