オリジナル投稿者： Minho ,
I am assuming you mean carrier lock and not iCloud lock. That probably depends on the country you are in. Here in Canada, the original carrier has to unlock it and thankfully, they are no longer allowed to charge for this service. However, if the phone still has an outstanding balance (subsidy), then the carrier will not unlock it until it is fully paid. How this plays out where you are may be different. Usually your carrier should be able to determine whom it is locked to when you give them your IMEI.