Niko's mobile Cheat Numbers to dial:
 
468-555-0100: Change weather
265-555-2423: Banshee
662-555-0147: Feltzer
265-555-2423: Presidente
486-555-0150: Get a different selection of weapons
486-555-0100: Get a selection of weapons
267-555-0150: Raise wanted level
267-555-0100: Remove wanted level
362-555-0100: Restore armour
482-555-0100: Restore health
948-555-0100: Song information
227-555-0142: Spawn a Cognoscenti
227-555-0175: Spawn a Comet
938-555-0100: Spawn a Jetmax
625-555-0150: Spawn a Sanchez
227-555-0168: Spawn a SuperGT
227-555-0147: Spawn a Turismo
359-555-0100: Spawn an Annihiliator
227-555-0100: Spawn an FIB Buffalo
625-555-0100: Spawn an NRG-900

Prank Calls  
Through out the game you will see phone numbers written on walls and buildings.
Use these numbers to make prank calls. It's just a bit of fun.

Access Cheats Again 
When you enter a cheat into your cell phone, you can usually access it again from the phone's 
main menu ("Cheats"). You do not have to enter these phone number cheats again.