The country has 4.404 million subscribers in total of (February 2012) and (with 4.3 million people) there's about 1 mobile lines for every citizen. (101.11% penetration rate)
Until 2011, Instituto Costarricense de Electricidad had a monopoly on wireless communications. In november, 2011, after the market was open as required by DR-CAFTA, Claro and Movistar started service.  
The country's telecom regulator is SUTEL (Spanish) 
Source: WikipediaSee Also
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