So I was thinking about getting the Htc Sensation 4g on Craigslist for a good price. I don't want a t mobile contract so I was wondering if I could use t mobile's 4g data speeds. But, on the prepaid plan(like $50 a month for unlimited talk, text, and web) on 4g. Does anyone know how I could go about this? Where to get a prepaid sim? Thanks in advance! Btw I'm new here, so if I broke some kind of unspoken rule, forgive me.