Digi was founded by Zoltán Teszári, who is the majority shareholder, and has been listed on the Bucharest Stock Exchange since May 16, 2017.

In 2019, Digi had a market share of 51% in Romania and the vast majority of its subscribers are connected via fiber, a process which was started in 2006.

This has had a major contribution to Romania's status as a country with one of the highest fixed broadband internet speeds in the world.

[2][3][4] In 2023, Digi Group extended the fiber networks in Spain to cover over 8.7 million homes.

Half owned by Zoltán Teszári merged with Analog CATV SA cable company in Bucharest.

The C-Zone network was acquired in 2006, entering certain areas in Bucharest that were not covered due to zone exclusivity.

[6] Also, satellite television subsidiary in the Czech Republic was sold to Lama Energy in March 2015,[7] which continued to use the Digi brand for other acquired internet and IPTV provider until 1 April 2020.

After initially receiving approval in May 2018, it was revoked in November 2018, due to finding non-competitive issues in certain areas.

In Spain, due to the large number of Romanian residents, MVNO mobile telephony services were launched through Movistar in 2008.

The company announced that it is gradually giving up the supply service due to the unusual volatility of the electricity price.

[14] RCS & RDS introduced the Digi TV brand for satellite television services in December 2004 in Romania and in 2006 in Hungary, Slovakia, the Czech Republic, Croatia and Serbia.

In 2006 the company unified under the Digi brand the cable television, internet and telephony services in Hungary, followed by Slovakia in June 2007.

[21] In 2016 the shareholders of this company were:[22] RCS & RDS is one of the leading providers of mobile telephony services in Romania.

Below is the evolution of their mobile telephony subscribers over the years: [23] In 2012, the operator removed Discovery channels from the grid, motivating that it would have requested too much money for retransmission.

In 2012, Digi removed the Antena TV Group channels from the satellite television grid following disagreements.

[25] After evidence of corruption made public by a journalist in 2013, the directors of Digi and of the Professional Football League were convicted in January 2019.

[27] In Hungary, Digi was excluded from the auction for 5G licenses in 2019, motivating its decision on assumptions and facts that are supposed to happen.