The ETravelSim South Africa eSIM works across Cape Town, Johannesburg, Pretoria, Durban, and along the Garden Route from Mossel Bay to Plettenberg Bay on CellC 4G/LTE. Coverage is strong in city centres and along main highways including the N1, N2, and N3. Expect occasional dead spots in dense forest stretches like Tsitsikamma and on remote sections of the Drakensberg. Table Mountain, Stellenbosch, and the V&A Waterfront all have reliable signal.