My friend has 3 invites, but his parents won't let him buy it so he said he might give it to me. But even then, I would need to borrow money from my parents and it would take me a year to pay it off. Is it worth upgrading a GS4 to a OPO? Anyone have any experiences with the phone? And what happens if I get the yellow banding? Can I send it back in for a replacement?