Cosmote S.A.


Cosmote Telekom, known as just Cosmote, is the largest mobile network operator in Greece and it is a division of the Hellenic Telecommunications Organization, the incumbent telecommunications provider in Greece.
Outside of Greece, previous operations included GLOBUL in Bulgaria and Telekom in Albania.
Until October 2025, Cosmote also operated in Romania as Telekom Romania until the sale to Vodafone Romania. As part of the sale, Vodafone acquired the postpaid customer base and Digi the prepaid customer base.
Both companies also gained additional spectrum and towers.

Introduction of the Telekom brand

In 2015, despite adopting the Telekom brand for its operations in both Albania and Romania, OTE Group instead announced plans to adopt Cosmote as their uniform commercial brand in Greece covering fixed, broadband and mobile telephony. The brand was also refreshed and a new logo and strap line introduced.
Whilst Cosmote had always been the brand used for mobile telephony, the company had previously sold fixed and broadband services under the OTE brand.
In 2023, activity began to raise awareness of the Telekom brand in Greece. In September, after Telekom’s T logo was added to the OTE Group building in Athens, the chief of Deutsche Telekom hinted that the logo may be adopted
The website, stationary and printed advertisements and billboards were then updated to feature the Telekom logo in addition to the Cosmote branding with the statement "Member of the Telekom Group".
Beginning in 2024, all commercials ended with the slogan "Cosmote, member of the Telekom Group". In addition, a new splash screen of the Telekom branding was added to Cosmote’s television advertisements.
Cosmote also branded various programmes and competitions as "Powered by Telekom" such as Women in Gaming and World Pass to further enhance customer awareness.
In April 2025, the new Cosmote Telekom brand was launched along with the tag line ‘Συνδέουμε τον κόσμο σου’
Since the introduction of the new brand, Cosmote Telekom have introduced MagentaONE, Magenta AI and Magenta Moments. The T Phone 3 and T Tablet 2 launched in Greece.
In addition, the Basketball arena at the OAKA has been renamed Telekom Center Athens under a five year deal

History

COSMOTE launched commercial operations in Greece in April 1998 and reached 1 million subscribers a year later. In 2000, the company was listed in the Athens Exchange. In 2001, COSMOTE reached a customer base of 2.5 million becoming the largest mobile network operator in Greece.
In 2006, COSMOTE acquired 99% of Germanos SA from its owner Panos Germanos, a multinational chain of retail electronic goods vendors. During the same year COSMOTE was listed among the top performers in the technology industry worldwide according to BusinessWeek's Information Technology 100 rankings, being the only Greek company in the list.

Subsidiaries

Sponsorships

Under its Corporate Responsibility programme, COSMOTE supports actions related to the environment, society, the marketplace, the workplace and public awareness. Actions undertaken in this context include inter alia a joint sponsorship, together with the Hellenic Telecommunications Organization, of the Athens 2004 Olympic Games. COSMOTE has also initiated a Scholarship programme for university studies, awarding scholarships to high school graduates who have been admitted as first year students in higher educational institutions in Greece.
In October 2011, COSMOTE announced that will support, together with OTE, the digitisation of the libraries of the Halki seminary in Constantinople.
In 2012, OTE and COSMOTE announced the sponsorship of the exhibition "The Antikythera Shipwreck: The ship, the Treasures, the Mechanism", of the National Archaeological Museum.

Financial results