On the news today (the newspaper is Tiempo Argentino, sorry about the unreadable photo):￼
It says "In Spain it amounts to less than 340 thousand customers a month, or 0.006% of the total".
This is talking about cellphone users. Now, how many cell phone users are there in Spain?
According to this newspaper, 340000 are 0.006% of the total, so... 5 666 666 667 (aprox.), therefore, Spain has roughly one cell phone for each man, woman and child in the world.