How to unlock a cell phone without knowing the code?

I have a feeling my b/f is cheating on me. I'm trying to find evidence. His cell phone is locked. Is there a universal code that unlocks all cell phones or anything I can do to get in? I'd like to find out what numbers he's been calling and who's been calling him. Any advice appreciated. Thanks. Oh, and it's an old Nokia Tracfone if that helps at all.

How to unlock a cell phone without knowing the code?
if yall are sharing a phone bill u can always log onto yalls account on the internet and look at the numbers there
Reply:not unless you have some high-tech equipment to look on it. sorry chickie pie you might try and ask him and see what he says.
Reply:Usually it's the last four of the phone number.
Reply:I used to work for a cell phone company..it usually is all zeros four to six of them..but it might be different if he changed it..good luck
Reply:0000, 9999, or his birth year
Reply:I dont think you can unlock the phone like that you might have to take it to the server and let them do it,but i dont think what your doing is worth that much trouble,just simply ask him and if he gives you an answer and your not satisfied with it, just leave him alone,it is so clear that he's not the right guy for you,sticking to him will make mr.perfect come and go and it would be your fault,leave him alone.