Ok so I was using an iphone 4 on a plan ,and then some stuff happened and now i'm stuck using it on prepaid goPhone (ex boyfriends suck). I'm okay with this but my problem is I now can only use data when I'm on wifi. I'm paying the $50 a month plan for unlimited everything and I've tried all of the unlockit.co.nz and other APN changers to set up a data profile but nothing is working. Without jailbreaking (i don't wanna ruin my phone) is there a way to do this??