Riga: As the capital, Riga boasts excellent 4G and 5G coverage across the city. The tourist-heavy Old Town (Vecrīga) has strong outdoor signal, though indoor coverage can be weaker inside historic buildings with thick stone walls. Public transport, including trams and buses, maintains a reliable connection as it operates entirely above ground.

Jūrmala: This popular seaside resort has very good connectivity, especially along the main pedestrian Jomas Street and the expansive beach. While coverage is strong throughout the city, the signal may be slightly less powerful in residential areas set back from the coast amongst dense pine forests.

Liepāja: Latvia's third-largest city offers robust mobile service in its center and active port areas. In the unique Karosta district, a former military port, you'll find solid outdoor coverage, but the massive concrete walls of some Soviet-era buildings can significantly impede indoor signals.

Daugavpils: The country's second-largest city features comprehensive 4G and expanding 5G networks. Signal is generally strong, but visitors to the historic Daugavpils Fortress should expect weaker or non-existent indoor coverage due to its incredibly thick 19th-century fortifications.

Cēsis: Connectivity is reliable within the charming town of Cēsis, including around its medieval castle complex. However, travelers venturing into the surrounding Gauja National Park for hiking or canoeing may find that signal becomes intermittent or unavailable in remote valleys and densely wooded areas.

Main 'A' Highways: Coverage is generally strong along the main national highways radiating from Riga, such as the A1, A2, A6, and A10. The Via Baltica (E67), which follows the A7 and A1, maintains consistent signal, but you may experience brief drops in service when traveling through long, forested sections between major towns.

Pasažieru vilciens Rail Network: Service on intercity trains is typically reliable on routes connecting Riga with major cities like Daugavpils, Liepāja, and Valmiera. However, expect intermittent signal and data interruptions when trains pass through extensive forests or sparsely populated rural areas, particularly in the Latgale region.

Vidzeme and Latgale Uplands: While Latvia lacks mountains, its hilliest regions in the east, such as the Vidzeme and Latgale uplands, can have less consistent coverage. Signal may weaken in valleys and remote wooded areas, especially when you are far from main roads or settlements.

Remote Forests and Border Areas: Large, unpopulated forested zones, particularly in the Kurzeme and Latgale regions, are known for having weak or non-existent mobile signal. Coverage can also be sporadic in areas directly adjacent to the eastern borders with Russia and Belarus, away from official crossing points.