The mod replaces Niko's phone with Windows Phone 7 Installation: Using the SparkIV or OpenIV program, replace the "minigame.img" file (located in "Rockstar GamesGrand Theft Auto IVpcdatamapspropslev_des"), the "cj_ld_phone_final.wtd" , "cj_mobile_3.wdr" and "cj_mobile_hand_1.wdr" files with the ones from the archive -Note: Back up your files!