"Three has started to upgrade customers to its 4G network, and allowed customers to roam for free while travelling in the United States.

The operator will accelerate its rollout after the Christmas period as all customers with compatible devices will be eligible for the service by the end of Q1 2014, providing they are in a 4G area. Customers will be upgraded at no extra cost. The rollout started on 2 December across London, Birmingham, Manchester and Reading. A total of 50 towns and cities are planned to be covered by the end of 2014, while Three aims to cover 98% of the population by the end of the following year."

- See more at: http://www.mobiletoday.co.uk/News/27503/Three_brings_Feel_at_Home_to_US_launches_4G_in_UK.aspx#sthash.fWfyZtXR.dpuf