How to officially unlock a iphone 6 form japan soft bank?

I have i ipone 6 from japan i want to unlock it officilly for india it is of softbank japan please help me woth de same
iPhone 6s, iOS 9.2.1?
Has invited:

studclub - hello every one

Favor from: apple

buy a unlock card.


Favor from:

I suggest you can approach and specify the country,locked network of iPhone 6.Based on the availability you can get the permanent unlock service along with free instructions.

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