All cheats must be entered during the game via the phone, then they are no longer key combinations as in previous GTA. To type numbers, you must first log on to the phone. Once on the phone's main menu, push the corresponding button to access the numeric keypad: to move the buttons on the phone, use the arrow and select the desired number using the key. To dial, select the icon in the upper left blue handset keypad.
All GTA 4 cheats
4825550100 - Health and set up the weapons.
3625550100 - Armor at most.
4865550100 - Set of weapons # 1
4865550150 - Set of Arms # 2
2675550100 - Clear Wanted Level
2675550150 - Increase Wanted Level
4685550100 - Changes the weather / brightness
3595550100 - Spawn an Annihilator
9385550100 - Spawns a Jetmax
6255550100 - Spawn an NRG-900.
6255550150 - Spawn a Sanchez.
2275550100 - Spawn an FIB Buffalo.
2275550175 - Spawn a Comet.
2275550147 - Spawn a Turismo.
2275550142 - Spawn a Cognoscenti.
2275550168 - Spawn a SuperGT
WARNING: Remember, some tricks could block some goals. We advise you to use only the tricks for fun and not to save the game after use. Use at your own risk!