How do prepaid iPhones work?

I'm thinking about buying just any At&t iphone from amazon but if i buy any iphone from at&t can i do prepaid and when i buy the cards how do i put it on the phone?

You have to buy a Pre-Paid Activation Kit from whatever cell provider you plan on using.

& Then what you'll do is pay for so many minutes a month but I will warn you if you plan on using the iPhone to browse the internet and stuff then you'll need more than a pre-paid plan…

You'll need sometime like a unlimited, talk, text and data for $60 a month kind of plan because you must have unlimited Data in order to use your iPhone.

If I were you I wouldn't trust buying an iPhone from EBay the chances of you getting a stolen phone is 50/50 and if you buy a stolen phone you'll be sol…

You can go and buy pre-paid phones at the company you plan on using

The same way you would any other prepaid phone. As far as getting to do prepaid, not sure. You'd have to get a data plan anyhow.