On July 12th, 2005 mobilkom austria group welcomes Bulgarian Mobiltel as a new member of its group. Telekom Austria acquired the purchase option for a takeover of the Bulgarian mobile operator in December 2004; with the acquisition of 100% of the share capital, the transaction has now been closed. This acquisition is the largest foreign investment in Austria's economic history.

Mobiltel is the flagship of the Bulgarian mobile telecommunications industry. It is a highly profitable and professionally run enterprise, with some 2,300 employees. With a market share of over 50% and over 5 million customers, Mobiltel is that nation's market leader - and one of the most successful mobile operators in Europe.