Best 4G prepaid plan for Galaxy S4 US Cellular?

[hydrochetta]

I've struck out several times connecting my Verizon Galaxy S3 to a 4G prepaid plan so I decided to ask first for suggestions. I'm considering purchasing a US Cellular Galaxy S4 from eBay and I'd like to know which 4g prepaid plans I could use the phone with and how could I do so? Is there a way of determining what phone can be used properly with what 4G plans? I feel like a noob, please enlighten me. =)