This is an exact quote from three.co.uk website. "Changing your contract." "You can move to one of our price plans of equal or higher value at any time during your contract, provided you've kept up to date with all the payments on your existing price plan. The only plan you can't move to at any time is The One Plan." I would like to move onto the text 500 plan from three, the problem is that I am already on that very plan, just an earlier version but still the same price. The new version of the plan offers unlimited data though whereas I'm limited to 1gb which is easy to go over if you watch any sort of podcasts etc. If they have stated clearly on the website that you can change contract,do I have a leg to stand on legally if they say no? as it looks like they are going to. I don't have a clue on this one , the contracts are different although named the same and they are equally priced. I've never ever missed a payment either. Anybody care to comment? regards Jason.