My phone is locked

Joao, Don't know if this will help?.. Have a look @ this article (http://avgclick.me/LockedPhone).
AVG Guru

I change my sim card and now my phone is locked and I can't unlocked them… What cann I do?

Joao, Don't know if this will help?.. Have a look @ this article (http://avgclick.me/LockedPhone).
AVG Guru