First, players have to take out their mobile phones with the Up Arrow key.Here are the steps players need to follow to use cheat codes in the game: Unlike other GTA games, players cannot just type a phrase on their keyboards. The only way to input cheat codes in GTA 4 is through an in-game mobile phone. Annihilator (NOOSE Armed Helicopter) - 35 (FLY-555-0100).Cognoscenti (Luxury Sedan/Limousine) - 22 (CAR-555-0142).This article lists all the vehicle cheats available in GTA 4: These are only used to restore health and armor, obtain weapons, raise/lower wanted levels, alter the weather, and spawn vehicles.
The available cheats are mostly practical and straightforward. There aren't as many cheats in GTA 4 as there were in GTA San Andreas.