Since today's the day that Vodafone and O2 launch their 4G networks, Three has piped up to remind you that its own LTE rollout isn't too far behind. Customers in London, Birmingham and Manchester will be getting an early Christmas present when the service goes live at some point in December. As promised back in February, existing customers with LTE-ready devices won't pay extra, nor will they lose their unlimited data allowance. The network is promising to be in 50 cities by the end of 2014 and cover 98 percent of the population by the end of 2015. After all, Dave Dyson's a mobile executive who likes to take things slow.