As of September 2010, Wind was the third largest mobile operator in Greece (after Cosmote and Vodafone) with more than 4.4 million active subscribers.

On September 30, 1992 the Greek Ministry of Transport and Communications issued a license to STET to create a national mobile telephony services network (GSM).

[citation needed] Commercial operation started on June 29, 1993 when the first call from a mobile phone took place in the country.

[6] In 1998 TELESTET was the first Greek mobile telephone communications company to be listed in international stock markets, the Nasdaq in New York City and the Euronext Amsterdam.

[7] In June 2001, TELESTET was the first telecommunications company in Greece and one of the first in the world to obtain ISO 9001:2000 Quality Management certification.

Sawiris sold the assets of the holding company (Weather Finance III) to a group of creditors, the SSN Ad Hoc Committee.

The group of senior bondholders established a new holding company (Largo Ltd.) which took full control of Wind Hellas in December 2010 and appointed a new board of directors.

In 2011 Vodafone opened talks with the owners of Wind Hellas regarding merging the two firms' operations in Greece, to better challenge market leader COSMOTE.