T-mobile unlimited $30 for iphone5?

I'm planning to buy the iphone5 or possibly the SG3 in a couple of weeks but I'm a bit confused on a couple of issues regarding the carriers and their plans.
First of all, I'm going to buy the phone unlocked because I don't want to be chained down to a 2 year contract since I will be studying in Europe next year.
T-mobile offers an unlimited 4g data and text plan for $30 but I keep hearing that T-moblie doesn't support 4g for iPhones and that edge would be the only functioning internet connection.
Do iPhones not work with 4g LTE at all on T-mobiles network?

If the rumors that I've heard are true, what other carriers have monthly prepaid deals with unlimited texting and a fair share of data without exceeding $50 a month?

T-mobile doesn't have LTE. They have 4G HSPA+ only in select cities and states. The Galaxy S3 will have access to t-mobiles 42mb network. You won't get 4G for 50dollara. All these plans are gimmicks. 50 dollars and you get unlimited 4G for 100 MBA then it's edge.

I thnk its only t mobile

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