Okay so, I'm looking into this seeing as I don't want to be locked into a horrid contract. I heard that only NEW ( New meaning: sealed, never used) work and I'm unable to apply the service to any used phone. Is this true? If so I really hope not. I found some good Galaxy S3 prices on Craigslist

Also, is it truly unlimited? . On the site, it was still talking about fees for going over and allowances. There should be none if it's UNLIMITED, right?

Also, I was told I would be able to still enjoy 4G with the pre-paid. Hope that's true also.