Sprint iPhone 5c A1456 Unlocking seems to unlock the GSM part. I go to the Apple Community and people there tell me that the lock principle is different between cdma and gsm. It's difficult to unlock cdma, and the carrier itself don't want to unlock it either. But when I see some unlock service, it indicates that : Sprint USA Available now - permanent factory unlock *Due to technical limitations of CDMA, this will only be unlocked for use outside USA. Inside the USA it will still be locked to Sprint So I am wondering that does unlocking allow consumers to use another country's cdma network? And some doubt about LTE. Does unlocking include FDD-LTE if the phone supports in device ?