O2 (UK) sale units, and with handset manufacturers, such as Apple and Samsung, to enable NFC technology on all future devices. On 23 February 2011, O2 announced it would launch a "second phase" for O2 Money, by discontinuing its branded cash cards in favour of a "mobile wallet" application for Android and iOS devices. The application would use NFC technology embedded in a phone to access money. It was announced on 9 January 2014 that the O2 wallet service would close on 31 March 2014. The BT Cellnet consumer brand was renamed O – the chemical symbol for an oxygen molecule –
The O2 Arena The O2 Arena The O2 Arena is a multi-purpose indoor arena located in the centre of The O2 entertainment complex on the Greenwich Peninsula in south east London. The arena was built under the former Millennium Dome, a large dome shaped building built to house an exhibition celebrating the turn of the third millennium; as the dome shaped structure still stands over the arena, "The Dome" remains a name in common usage for the venue. The arena, as well as the total O2 complex, is named after its primary sponsor, the telecommunications company O. The O2 Arena has the second