Unlocking

I want to unlock my v600, but do I just ask them for unlock code or I have to give a reason? Somebody told me that you have to be 90 days with them before they give you one. Have anyone tried to get one?

if they ask you for a reason tell them you are going in europe

to get unlock code you have to have an active account at the moment and also it must have been active for the past 90 days