How To Trace An Unknown Number On A Cell Phone

Does anyone know how to figure out who called your cell phone with an unknown number??

I keep getting calls that say unknown number and I try *69 and it doesn’t work on cell phones and I DO have caller Id but the number still dont show up does anyone know what I can do or what * number I can press in order to trace it back on a cell phone???
Really, what is the cell phone harrassment law???

the problem is that even though the network guys know about it they won’t tell you and in case if you do find a way out let me know too cos myself am sick of getting this type of calls.

although i do have a answer about your problem, the thing is this if you get a cross country call and the network is not upgraded to recognise the numbers thn you might get something like private number or unkown caller or 0000 on your screen.

Cheers!