A quarter of inhabitants in the Algarve also say that having access to television service is "irrelevant".
This is according to a survey by telecommunications comparison site ‘ComparaJa.pt’ involving 30,000 people.
After the Algarve, Bragança was the district where fewest people use the landline.
For more information, see: https://www.comparaja.pt/tv-net-voz/internet