Question: is giffgaff owned by ee?
Answer: There are actually only four UK mobile networks – EE, Three, O2* and Vodafone* (check signal using Ofcom's Mobile Coverage Checker). All the other providers 'piggyback' – ie, buy space from – one of these four networks. For example, Tesco and Giffgaff are on O2, Asda is on EE, Smarty uses Three and Voxi is on Vodafone.