unlock screen passcode

[prodromos]

I locked the screen pass code of my sony xperia lt25i and i can not unlock the phone. the sim card is unlocked. 

Can anybody help?

Thanks

[Uliwooly]

Check this thread, same answer

http://talk.sonymobile.com/t5/Xperia-Z1/cant-bypass-unlock-screen/m-p/487599#M10760