Here we have the iDroid model swapped over Niko's phone in GTA 4. Only replaces the model in his hands and not the one that appears on screen.

How to install?
Go to "GTAIV\pc\data\maps\prop\lev_des\
Open "minigame.img" with spark IV or Open IV
Then replace the two original files with the modded ones. Rebuild then then fire up your game.