dro4er: International directory enquiries free tutoring Vodafone, meanwhile, emphasised that its 4G deals were the most economical on the market, with some offering unlimited data for £26 per month for the first threee months. It is to launch initially only in London, but says it will be available in a dozen more major cities before the end of the year. O2 will launch in London, Leeds and Bradford today, and in 10 more towns by the end of the year.