8th of January 2000, but only for pilot testing. Officially, the commercial operation of the network Oskar wasn't started until March 1, 2000. In 2001, in cooperation with Ericsson and the Czech Technical University it opened a Research and Development Center. Between 2001 and 2002, Oskar won 5 nominations for the prestigious World Communication Award for the best mobile operator. It closed its partnership with the world's mobile Vodafone family in 2005 and a year later of Oskar Mobil a.s. became Vodafone Czech Republic a.s. Within a few months, there was a complete rebranding and Oskar Vodafone later became Vodafone. In 2007, Vodafone OneNet was launched offering companies converged mobile and fixed voice and data services including Internet access. As the first operator to do so, it started to offer services for free in exchange for viewing the ad on your mobile phone. In the following years they began the construction of a 3G network and at the end of 2012 already covered 73.2% of the population. In the same year, Vodafone was the first operator to bring per-second billing and the first tablet under its own brand. The year 2013 was marked by unlimited tariffs, the test LTE network and cooperation with virtual operators. The Vodafone network Commercial operation of the network was launched in March 2000. The Vodafone network currently covers 99.1% of the population. With the launch of EDGE, Vodafone introduced unlimited data services in 2005. The operation of its 3G network was launched in 2009. It launched LTE 4 years later for the first time. Vodafone is different from other operators in that they want LTE networks to cover mainly rural areas. By the end of 2014, it plans to cover 93% of the population. Virtual operators in the Vodafone network On December 2, 2013 Vodafone launched its own virtual operator Oskarta, whose name follows its earlier service. It is a prepaid card that is already characterized by cheap calls. The Vodafone network currently comprises 23 virtual operators. Among them include: Centropol Telecom, COOP Mobil, DH Telecom, LAMA Mobile, Oskarta, Quadruple, SazkaMobil, Studentfone. Corporate responsibility Vodafone is environmentally friendly and the first operator to launch a so-called Green network. More than two-thirds of its telecommunications network is supplied from renewable sources (hydropower, biogas plants, combustion of biomass, wind, solar) and the remaining 30% of energy consumption annually relies on 20,000 trees being planted in cooperation with