O2 Phones

O2 is a leading provider of mobile services to consumers and businesses in the UK. It is the leader in non-voice services, including text, media messaging, games, music and video, as well as data connections via GPRS, 3G and WLAN.

O2 UK is part of the wider O2 group which is a wholly-owned subsidiary of Telefónica S.A. O2 comprises mobile network operators in the UK and Ireland, along with integrated fixed/mobile businesses in Germany, the Czech Republic (Telefónica O2 Czech Republic) and the Isle of Man (Manx Telecom). It also owns 50 percent of the Tesco Mobile and Tchibo Mobilfunk, joint venture businesses in the UK and Germany respectively.
In addition, O2 includes O2 Airwave, which supplies secure digital communications to the emergency services, including the Police, Ambulance and Fire, as well as other public safety organisations.

O2 was formed in 2001 following the demerger from British Telecom of its former mobile business, BT Wireless.