How much is an Iphone4 data plan a month?

I was wondering how much I would have to pay monthly to have an Iphone. I want to have unlimited text and calling. (please no rudeness) :)

Added (1). I did go to several websites, but none said how much a month it would cost. But thanks Hun, you're not the smartest.

Mines about $30 a month.

Seriously? There are four or five carriers in the US offering the iPhone. Go to their websites and look it up. There are dozens of different possibilities.

Sorry if you think this is rude, but you could have found this out yourself in the time it took you to write and post your question.

300mb $20
3GB $30
5GB $50

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