Last Number Master Lock Lock Password For LG UX3300 Phone??

Lock Password For LG UX3300 Phone?? - last number master lock

I need the 4-digit security code for this phone. I tried 0000, 1234, 9999, 1111, etc. It is the last 4 digits of my phone number or social security number because the phone was given to me by someone and then I put my number active. But I could not reset a master password, without it either. And do not tell me the person you ask, because if I could, of course, I already asked.