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 –
O2 (UK) greet and direct visitors. Other smaller touches include changing the lighting, carpets and seats in the arena to the colour blue. The O2 Arena was the site of the artistic gymnastics events and medal rounds in basketball for the 2012 Summer Olympics. In February 2017, in a continuation of its agreement with AEG, the developers of the site, O2 announced that it had renewed its naming rights for a further ten years. Since 2008, O2 is partnered with Live Nation and the Academy Music Group, allowing O2 to rename the music venues. The partnership allows O2 to offer customers priority