I live in Costa Rica and just had my mom visiting me from Orlando. As I kind of broke my iPhone 5 I spoke with her about doing the AT&T iPhone Upgrade Plan to get a new 6S, I would pay it to her month by month but keep it in Costa Rica. We know about the online unlocking services and have used them before but never on a very recent phone (or the newest revision). We paid for a cheap service and we got a message 3 days after saying it cannot be unlocked without any reason. I've gone ahead and paid for a more expensive service now and I am still waiting. I've re-searched a bit but it is all about buying it full price or through the Apple Upgrade Plan but not AT&T. Any ideas? Is she going to have to take it back? Thanks!