Telefonica is Spain's leading telecommunications operator. Net sales break down by activity as follows:
- mobile telephony (74.8%): 270.8 million subscribers at the end of 2018;
- fixed telecommunication service (25.2%): fixed telephone service, Internet access, broadcasting of TV channels, etc. The group operates in Spain (9 million telephone lines, 6.1 million ADSL lines and 4.1 million television subscriptions managed at the end of 2018), Europe (2.3 million telephone lines and 2.3 million ADSL lines managed), Brazil (13 million telephone lines, 7.6 million ADSL lines and 1.6 million television subscriptions managed) and Latin America (10.6 million telephone lines, 6 million ADSL lines and 3.2 million television subscriptions).
Net sales are distributed geographically as follows: Spain (26.1%), Brazil (20.8%), Latin America (21.7%), Germany (15%), United Kingdom (13.9%) and other (2.5%).