Hi. I bought my iPhone 7 at iD Mobile 2.5 years ago (the contract has been over), and I am planning to move to Korea. Thus, I need to unlock my iPhone to use it there only by changing the local sim card.
Please let me know how to unlock my iPhone.
FYI, when I traveled to China 4 months ago, I have tried to use the local sim card, but it didn't work since the phone is locked. Thank you!