Unlock my iphone but don't know the carrier?
I bought an iphone 5 from a friend that works at a hotel that he found. I want to switch to straighttalk and spent $63 on the bring your own device package but the sims aren t valid. I looked into unlocking my iphone but i don't know what carrier the guy who left it had. I know its canadian because i searched the phone number. How should i go about unlocking it?