Dakar: As the nation's capital, Dakar offers Senegal's best 4G and growing 5G coverage. Signal is strong across key areas like the Plateau business district, Almadies, and Ngor. Connectivity remains reliable on the modern Train Express Régional (TER) and along the Bus Rapid Transit (BRT) corridors, though indoor reception can sometimes weaken inside older buildings with thick concrete walls.

Saint-Louis: Expect solid 4G coverage throughout the historic island center (Ndar) and the mainland parts of the city. The network is generally dependable for navigating the colonial-era streets and waterfronts, although the very thick walls of some traditional buildings may occasionally reduce indoor signal strength.

Thiès: This major inland city and transport hub has reliable 4G service, especially in the downtown area and along the main highways connecting it to Dakar. While coverage is consistent for most uses, you might experience slightly weaker signals deep inside crowded markets or large concrete structures.

Mbour & Saly: The popular coastal tourist zone, including Saly Portudal and Somone, features excellent 4G/LTE coverage designed for visitors. Signal is strong in most hotels, resorts, and along the beaches. The network is highly optimized for this coastal strip but can become less consistent as you venture further inland.

Ziguinchor: The largest city in the Casamance region provides dependable 4G connectivity within its urban center, making it a solid base for regional travel. As you move into the surrounding rural areas or mangrove forests, the signal will likely drop to slower speeds or become intermittent, so downloading maps in advance is recommended.

Major Highways (Autoroutes and National Roads): Connectivity is strong along the main A1 and A2 autoroutes connecting Dakar with AIBD airport, Mbour, and Touba. On major national roads like the N1 heading east towards Tambacounda and the N2 north to Saint-Louis, signal is generally reliable near towns but can become intermittent or drop entirely in the long rural stretches between them.

Train Express Régional (TER): The TER line connecting Dakar, Diamniadio, and Blaise Diagne International Airport (AIBD) offers consistent and reliable 4G/LTE coverage throughout the journey, as it travels through the country's most developed economic corridor.

Southeastern Senegal (Kédougou Region): In the hilly southeastern region near the borders with Guinea and Mali, particularly around the Fouta Djallon foothills, mobile signal is significantly weaker. Expect frequent service interruptions and complete dead zones when travelling off the main N7 road and near Niokolo-Koba National Park.

Ferlo Region: The vast and sparsely populated Ferlo pastoral zone in north-central Senegal has very limited and patchy mobile coverage. Travelers crossing this semi-desert area should anticipate long periods without any signal, especially when away from the few major towns like Linguère.

Casamance River Delta and Rural Areas: While main towns like Ziguinchor and Cap Skirring have good service, connectivity can be unreliable when travelling through the rural parts of the Casamance region. Signal often weakens or disappears in the dense mangrove areas and between smaller villages south of The Gambia.