There are 3 methods to SIM unlock your SoftBank iPhone:
1)Through My SoftBank app
2)Via SoftBank SIM Unlock Cards
3) Using Official iPhone Unlock
But which one of them is the right one for you? Read more
Learn everything about the Official IMEI Softbank Japan iOS 8.4 iPhone Unlock. iPhone 4s, 5, 5c, 5s, 6 & 6+ are supported with permanent unlocking results. Read more