Each of the three incumbent mobile-phone operators will need to spend about 10 bln. CZK on infrastructure for offering high-speed internet, (77,61 USD, 0,31%) said. A survey by found that two-thirds of existing Czech users are wiling to pay extra for a much faster connection. Asked (38,85 USD, 3,13%) Luis Malvido of O2 when mobile data will balance out the drop in revenue, he said that it is difficult to estimate but definitely by 2020.