O2 (UK) first commercial General Packet Radio Service. BT Cellnet, together with BT Group's mobile telecommunications businesses in Germany, Ireland and the Netherlands, was part of the BT Wireless division. This was spun off from the BT Group in 2002 to form a new holding company, mmO2 plc, which introduced the new "O2" brand for the businesses. In 2005, mmO2 plc was renamed O2 plc. O2 plc was purchased by the Spanish telecommunications company Telefónica in 2006 for £18 billion. Under the terms of the acquisition, Telefónica agreed to retain the "O2" brand and the company's UK headquarters. O2 plc became Telefónica
SBA Communications SBA Communications SBA Communications Corporation owns and operates wireless infrastructure, including small cells, indoor/outdoor distributed antenna systems, and traditional cell sites that support antennas used for wireless communication by mobile carriers and wireless broadband providers in the United States and its territories, as well as in Canada, Central America, and South America. The company operates in two segments, Site Leasing and Site Development. SBA Communications Corporation leases antenna space to wireless service providers on towers that it owns or operates; and manages rooftop and tower sites for property owners under various contractual arrangements. As of December 31, 2013, it owned