A friend of mine wants the 5s but has Straight Talk. She has the money to buy the phone without a contract but doesn't know whether it'll work or not since Straight Talk isn't officially offering the phone. I'm not familiar with Straight Talk since I use Verizon, but I've done a little research and it looks like all you have to do is cut down the SIM card and change the APN settings? And the T-Mobile version of the 5s that's being sold on Apple's website is unlocked, yes? That's what I've read on here. Has anyone tried this yet?