Three is set to raise the stakes in the UK's super-fast mobile broadband market by offering free 4G services to existing customers.
The broadband provider is planning to launch its 4G network in London, Birmingham and Manchester in December 2013.
And Three customers with a 4G-ready device will be able to benefit from super-fast mobile broadband at no extra cost.
Consumers will simply need to carry out a simple software upgrade in order to receive next-generation mobile broadband, the service provider explained.
Ernest Doku, telecoms expert at uSwitch.com, said Three has "really put the cat amongst the pigeons" by offering 4G for no extra cost.
"With all the big players now ready and raring to offer super-fast mobile internet - and Three soon to change the game by giving it away - it won’t be long before competition heats up on all fronts," he stated.
O2 and Vodafone launched their own 4G networks this week, while EE revealed its own super-fast mobile broadband is available in 105 towns and cities nationwide.