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
O2 (Ireland) Ireland and Three Ireland, offering services in some built-up areas in late 2006. In July 2007, O2 launched its mobile broadband offering in Ireland using HSDPA technology over its 3G network. They provided speeds of up to 7.2 Mbit/s and claimed to cover 90% of the population on the least contended Irish 3G network following an upgrade in 2007. Speak Easy was the name of O2 Ireland's prepaid service. In 2007 they became the first Irish operator to offer free text messages to all Irish mobile numbers, although it only applied for weekends. However, in early 2008 they introduced a