My Samsung Galaxy S3 from Korea is asking for USIM passcode I don't know it and I can't use my phone. How can I get what it is asking for?

[AC Question]

my samsung galaxy s3 from korea is asking for USIM passcode i dont know it and i cant use my phone

What is rhe passcode anyone know

 

[B. Diddy]

Re: my samsung galaxy s3 from korea is asking for USIM passcode i dont know it and i cant use my pho

Welcome to Android Central! Did you buy the phone new, or did someone give it to you? Or did you buy it used? Are you using it in the US or another country? Who is your carrier?