I have an iPhone 6 Plus, locked to au/KDDI here in Japan. Like all iPhones sold by carriers here, it is locked and the carrier will never, under any circumstances whatsoever, unlock it. If I pay an unlocking service $200 or whatever it is, I can get it unlocked ('official' unlock, where iTunes tells you the phone is now unlocked). My question is, if I do that and then ever need to have my phone replaced under AppleCare+, will I get a locked or an unlocked phone back from Apple? Has anyone else tried this?