UK mobile network Three has dangled a fairly large carrot in front of prospective customers, after announcing that travelers will be able to use their call, text and mobile data allowance in the US.

Thus far, Three’s Feel at Home offering was effective in seven countries around the world, including Australia, Austria, Denmark, Italy and Hong Kong. It basically means that whatever plan you’re signed up to in the UK works exactly the same when you travel to one of the partner countries, and you don’t have to worry about roaming charges.

Now, the US, Indonesia, Sri Lanka and Macau have been thrown into the mix, and covers mobile Internet, SMS and phone calls. The deal includes pay-monthly, pay-as-you-go, mobile broadband and business customers.

In related news, Three also confirmed that it started upgrading customers to 4G earlier this week, in London, Birmingham and Manchester, with existing customers in those areas automatically bumped up to the super-fast network for no extra cost. This will be “accelerated” in January to cover more cities, with fifty conurbations planned by the end of 2014.

Press Release | Three brings Feel At Home to USA (via Engadget)