i was wrong n pressed.and i dont know how to do it? only have 9 attemots only. pls answer for me. model nokia 5233 service provider loop mobile post paid
Exactly that; enter the PUK code.
It should either be attached to the SIM card holder (credit card sized chunk of plastic the SIM card came in) or in your paperwork.
If you have neither, I recommend you contact the proper owner and return the device.
Check your phones manual , and the sim card providers manual too. Maybe the PUK code will be mentioned there. If not go to a Nokia Service Centre and they will do it for you.