You will need to contact your cell phones service provider (ATT, T-Mobile etc.) and they can walk you through the process of resetting the phone to override the pass code, you will loose all personnel data stored on the phone due to the reset. The reason for this is because this is a "security code" to keep personnel info safe, so when you loose the code the stored info on the phone is erased to keep it out of the hands of less than honest individuals.