O2 (UK) cent share of Cellnet for £3.15 billion. Cellnet had five million customers at the time of its acquisition. The company was later rebranded as BT Cellnet , and it became a part of BT Wireless, a group of companies owned by BT. BT announced on 3 September 2001 that the BT Wireless business would be spun off from the main group as a newly listed holding company, mmO2 plc, operating under the "O2" brand. Shareholders approved the plan at an extraordinary general meeting on 23 October 2001. BT Cellnet relaunched as "O2" on 18 June 2002, along with other former
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