O2 is the UK's largest mobile network operator, with about 23.2 million subscribers as of December 2024. [4] The company was formed in 1984 as Cellnet, [5] a 60:40 joint venture between BT Group and Securicor. Cellnet was one of the first two mobile networks in the UK, alongside Vodafone.

Oxygen is a chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds.

O2 (typeset as O2) is a global brand name owned by the Spanish telecommunications company Telefónica. The company uses the O2 brand for its subsidiaries in the United Kingdom and Germany.

O2 Czech Republic je firma patřící do investiční skupiny PPF. Je poskytovatelem kompletního spektra ICT služeb. [5] V roce 2009 byla Telefónica O2 Czech Republic sedmou největší českou firmou dle výše tržeb (59,889 mld.) a třetí největší českou firmou dle výše zisku (14,877 mld.).

The O2 is home to the world’s most popular music, sport, comedy and entertainment. Experience shopping at Outlet Shopping at The O2; climb Up at The O2; enjoy cinema, trampolining and bowling and eat at our amazing selection of bars and restaurants.

Get double data, boosted broadband speeds, and more when you’re with both Virgin Media and O2. See your upgrade options, view your bill, check your usage - all in the one place. If you …

Oxygen | O2 | CID 977 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

O2 Store, a chain of retail stores owned and operated by Telefónica Europe, with regional subsidiaries: O2 (brand), Telefónica mobile network global brand name

O2, consumer brands used by the Spanish telecommunications company Telefónica, the others being Movistar, used in Spain and Spanish American countries, and Vivo, used in Brazil. Telefónica acquired the O2 mobile networks in 2005–2006. Telefónica-owned O2 networks operate in the following...

Find out about O2, a leading digital communications company with the highest customer satisfaction for any mobile provider, according to Ofcom.