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O2 is the commercial brand of Telefonica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom.
With over 25 million customers, O2 runs 2G, 3G and 4G networks across the UK, as well as operating O2 Wifi and owning half of Tesco Mobile. O2 has over 450 retail stores and sponsors The O2, O2 Academy venues and the England rugby team.
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The launch of Wifi Calling gives our customers the option of making and receiving calls over Wi-Fi even if they can't connect to the mobile network, whilst 4G Calling provides our customers with clearer calls and better indoor coverage over our fast 4G network. Both of these work together to provide a seamless, uninterrupted experience and less dropped calls when moving between the two.
The City of London Corporation has announced a deal that will deliver a free, public access WiFi network, offering internet access anywhere within the Square Mile. The multi million pound project is one of the largest investments in wireless infrastructure ever seen in London.