Lock my phone and i am not able to unlock my phone

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

Hi sir
          my phone son xperia z2 has been locked after changed my sim as it has anti theft password and i forget my password what to do please resolve my issue.

thanks
gaurav bhaskar

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