The respective vendors say that it needs to be jailbroken to do so isn't that just to use non apple software? I understand that Sprint is the parent company of Boost or something like that.
Welcome to the all-new iMore Forums! - We're still moving some things around, so you may see a few quirks here and there, but we're working on getting things fully completed as soon as possible. For now, take a look around, and if you run into any major issues, please let us know in this thread!