Hello, I have a nokia 3650. I set the code so my phone wouldn't accept other simcards. I want to take it off but can't remember the code, is there a way to reset it. i still have the original simcard and everything but cannot remember the 5 digit code, can anyone help?

Also i have been told that the phone is blacklisted. I purchased the phone from a reputable seller but i have been told that the phone has been blacklisted. Does anyone know who i can contact to remove the black list? The phone lets me text and receive tex and change my divert settings, but won't let me receive or make calls.

I really need some help

Thanks in advance