Master password? Is there a master password for the Samsung-U600? I cant get any of my pics or music. Please help

I have samsung u600 and it was only given to me....it has a passwordf in i dont know...i cant use the phone when i text and all features....the owner also dont know the password as he forgot it...is there any way i can fix it? if i use my sim card it doesnt work...plsssss.

Default password is the last 4 digits of the phone # assigned to it.

Hope this helps