Unlock a paid-off T-mobile device that non associate to my account


    I have purchased a T-Mobile iPhone 7 Plus from my friend & he said it was paid off & his account is good standing. I just want to know that can I request unlock this phone with my info without my friend‘s authorities? Because I don’t want to bother him. It is T-mobile device but not associate to my account. Or I have to have him for his information

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