Only by starting a new game. If you saved on a cheated game it will remain forever.
Yes after you enter one go to the bottom of the phone menu.
To enter cheats, dial the number using Niko's Cell Phone...To access more cheats, open the phone, go to the menu and scroll to cheats :)
nope
we type the gta vice city cheats at menu. just go on to the menu of the game and type the cheat or type the cheat when you are playing the game :-)
No. Unless you Start a new Game.
Dude, just google "GTA IV cheats" and enter the phone number into your phone in the game(press "up" twice on the D-pad).
the cheats are different
You just directly type cheats. Type the cheats while game is running. You can also escape out and then type cheats on menu and resume game.
no is doesnt ruin your game. but some cheats block soms achievements
Most cheats in any of the Grand Theft Auto games can't be turned off. You will have to start a new save.
Just type it in once and go to your cell phone, the last option is cheats, the last cheat should be in there.
gtasanandreas.net/cheats