Dili: As the capital, Dili offers the most reliable 4G/LTE coverage in the country. Signal is strong across the city center, waterfront areas, and around key sites like the Cristo Rei statue. While service is generally good in hotels and malls like Timor Plaza, indoor coverage can sometimes weaken inside dense concrete buildings. Connections at Presidente Nicolau Lobato International Airport are typically stable.

Baucau: Timor-Leste's second city has good 4G coverage within its main urban areas, including both the old town and the newer commercial districts. The connection is generally reliable for standard mobile use. However, signal strength can be less consistent on the outskirts of the city, and indoor penetration in older, thick-walled colonial-era buildings may be weaker.

Maliana: Located near the Indonesian border, Maliana has functional 4G coverage concentrated in its town center. The network is suitable for messaging and basic browsing around the main market and administrative buildings. As you move into residential areas or travel away from the town's core, the signal may drop to 3G, and indoor service can be inconsistent.

Suai: A key hub on the south coast, Suai provides dependable 4G connectivity in the main town and around the Suai Airport area, largely due to its role in the energy sector. The network is generally stable for most online activities. Coverage becomes significantly more sporadic once you leave the central infrastructure hub, and signals inside large industrial facilities can be variable.

National Roads (A01, A02): Coverage is most reliable along the northern coastal road (A01) connecting Dili, Baucau, and the Indonesian border at Batugade. Signal is generally available in and around towns but can become intermittent or drop entirely in rural stretches and hilly sections between them. The main road south from Dili towards Suai (A02) also experiences similar gaps in coverage.

Intercity Rail Systems: Timor-Leste does not have an operational railway network. All intercity travel is conducted by road or, less commonly, by air or sea.

Central Highlands: Traversing the mountainous interior on roads connecting cities like Dili to Maubisse, Aileu, or Same will result in significant periods of no signal. The rugged terrain and deep valleys frequently block cellular service for extended portions of the journey.

Southern Coast and Eastern Tip: Mobile coverage is sparse along the southern coast, particularly between the main towns of Suai and Viqueque. Similarly, the far eastern Lautem district, including the area around Jaco Island, has very limited connectivity once you leave the administrative center of Lospalos.

Oecusse Exclave: In the Oecusse exclave, reliable service is primarily found in and around the capital, Pante Macassar. Travel into the region's mountainous interior or towards the more remote coastal areas will likely lead to a complete loss of mobile signal.