Telefonica is among the top telecom operators worldwide with a revenue of 52.04 billion euros in 2015. Its number of mobile customers in Spain was closing in on 17.5 million, and has surpassed 43 million in Germany.
Vodafone is another leading telecom operator in Europe with a total of 19.7 million mobile customers in the UK alone. The average monthly smartphone data use per Vodafone customer amounted to 1120 megabytes in 2016.
As the mobile penetration rate in Europe has been increasing over the years, the fixed-line penetration in Europe has been doing exactly the opposite. In 2015, the fixed-line penetration rate was down to 26.3 percent.