Just had a new option pop up on my phone under setting called Carrier. It just showed up wasn't there this morning. I haven't updated or Jailbroken my iphone 4s. Any ideas?
It's nothing new. It's just that it's usually hidden. Nothing to worry about, you're phone is not unlocked. I get it sometimes on my Sprint 4S, but usually only after I restore / update. Don't worry about it.