Saving Cheats on Niko's Phone in GTA IV? Not Possible

You cannot save cheats on Niko's phone in Grand Theft Auto IV.

• Cheats are session-only: Entered via phone dial pad (e.g., 486-555-0100 for health) or controller combo. They deactivate on reload, death, or new session.
• Phone Function: Niko's phone handles contacts, missions, emails, camera, multiplayer, and cheat entry—not storage.
• No "Cheat Menu" Persistence: Unlike trainers on PC, console versions have no saveable cheat slots.

How to Enter Cheats (Console):

• Open phone (Up on D-pad) → Keypad → Dial code → Call. Or use controller button combos (e.g., Health: LB, LB, RB, RB, Left, Right, Left, Right).

PC Version:

• Press ` (tilde) for console → type code (e.g., GUNS GUNS GUNS).
• Script Hook V / trainers allow persistent mods, but disable achievements.

Warning: Using cheats disables achievements/trophies for that save. Some cheats (e.g., "Wanted Level Down") can break mission scripts.