Why can't I unlock my iPhone?

Episode 1466 (54:54)

Nick from Marina Del Rey, CA
iPhone 6S

Nick has an iPhone 6S that he uses as a backup phone. He wants to unlock it for a trip to Europe, but neither T-Mobile nor Apple can unlock it. What can he do? Leo says that T-Mobile should be able to unlock it. It's their carrier lock. Leo recommends tweeting John Legere of T-Mobile (@JohnLegere). He pays attention to his Twitter feed and Leo bets he'll get back to him with someone to talk to.

Leo says he could also go to an independent cell phone store. They have great talent to unlock phones and could solve it.