The story
Crnogorski Telekom has been part of Deutsche Telekom Group since 2005. Going back into history, Montenegrin state-owned Postal and Telecommunications Company "PTT" was divided in two companies in 1998: Montenegro Post and Telekom Montenegro. In 1997, Internet Crna Gora (ICG) was founded, the first Montenegrin Internet provider, which operated within Telekom Montenegro.
In 2005, Telekom was acquired by Magyar Telekom, becoming a part of Deutsche Telekom Group. In 2006, the T-Com and T-Mobile brands were launched. In May 2009, Crnogorski Telekom a.d., T-Mobile Crna Gora d.o.o. and Internet Crna Gora d.o.o. were merged into one legal entity, Crnogorski Telekom a.d.
In 2012, the T-Com and T-Mobile brands were replaced by the T brand, under which all products are now marketed. In January 2017, Hrvatski Telekom bought the complete Magyar Telekom's stake in Crnogorski Telekom A.D. Deutsche Telekom AG holds 51% of the Hrvatski Telekom shares.
From Wikipedia’s article on Crnogorski Telekom, shared under CC BY-SA 4.0.4