Press Up to display the cellphone during game play. Press Up again to access the keypad. In addition to the codes available in the parent game, you can enter one of the following codes to activate the corresponding cheat function in the expansion. Note: Once a code has been entered correctly, a new "Cheats" menu option will be available on your phone, below "Options", where you can access the cheats without having to enter the phone number again. Do not save the game after enabling a code to avoid unforeseen problems. Enabling some codes may prevent achievements from becoming unlocked.