O2 Slovakia entered the Slovak market as the country’s third operator in February 2007. In 2024, it had more than 2.3 million mobile customers, making it the market’s second largest player, and by the end of the year it had expanded its 5G network to provide availability to 87,1% of the population. This expansion consolidated the company’s position as a frontrunner in the 5G industry in 2024. Corporate customers can subscribe to O2 Business Services, a 100% subsidiary of O2 Slovakia, which offers a portfolio of fixed and mobile telecommunications services and ICT solutions. In 2024, O2 Slovakia became part of the e& PPF Telecom Group, which is a significant provider of telecommunications services in Central and Southeast Europe. The group operates, in addition to O2 Slovakia, the telecommunications operators Yettel in Bulgaria, Hungary, and Serbia, as well as the company CETIN in the mentioned markets, which provides wholesale telecommunications infrastructure.