Most if not all of the cheats for gta iv are here http://www.gta4.net/cheats/
But be careful some cheats can block achievements, I'm not sure about trophies and you can only use them in campaign.
Got to IGN.com. They will give you cheats for gta 4.
Yeah because i got some o gta IV
http://www.gtaivcheats.net/ include gta iv * 360 Cheats * PS3 Cheats
Just type in the code. hope it works
Yes! To get cheats for GTA IV for the XboX 360, enter in your combuter website bar: http://www.xbox360cheats.com/grand_theft_auto_IV/
No,GTA SA cheats work only in that game,GTA 3 cheats work only in that game,and Vice City cheats only work in Vice City,etc.
Dude, just google "GTA IV cheats" and enter the phone number into your phone in the game(press "up" twice on the D-pad).
get the cheat ... write gta iv cheats ps3 or any and go on the 3rd or 2nd one.
Use ya phone, the first 3 numbers correspond to wat the cheat is, like 227 is CAR, 362 is DOC etc
NO
Unfortunately, you can't. Just like the xbox360, cheats lock trophies and achievements. Take GTAIV for example, as soon as you enter cheats, its over and locked. Also, dont try and download game saves off gamefaqs because even though they have completed the game, this still doesnt give you the trophies. I hoped this helped.
Yes But No Parachute.