Grand Theft Auto IV

GTA IV-

Press up to bring your cellphone up, then press up again. Be careful when using these cheats, as some of them will disable certain achievements. If they do, you'll be notified when you activate them, so don't save your game.
Health And Weapons Call: GTA-555-0100
Weapons Call: GUN-555-0150
Advanced Weapons: Call GUN-555-0100
Health Call: DOC-555-0100
Wanted Level Down Call: COP-555-0100
Wanted Level Up Call: COP-555-0150
Climate Change Call: HOT-555-0100
Spawn Cognoscenti (Mafia Car) Call: CAR-555-0142
Spawn Sanchez (Dirt Bike) Call: MBK-555-0150
Spawn FBI Buffalo Call: CAR-555-0100
Spawn Turismo Call: CAR-555-0147
Spawn NRG900 Call: MBK-555-0100
Spawn Comet Call: CAR-555-0175
Spawn SuperGT Call: CAR-555-0168
Spawn Police Chopper Call: FLY-555-0100
Spawn Jetmax (Boat) Call: WET-555-0100
Phone Directory

Zit Song Identifier - 948 555-0100
If you hear a cool song on the radio, dial this number to get a message with the name of the artist and song.
Emergency Services - 911
Dial this number and you'll be able to summon police, fire department or an ambulance with your phone.