Real GTA 5 cannot be compressed from 100GB to 500MB without losing everything that makes it GTA 5.
The OBB (Opaque Binary Blob) file is a data extension used by Android apps to store large assets (textures, sounds, 3D models). When you see a "GTA 5 OBB data download link," you are looking at a file created by a modder or scammer—not Rockstar. gta 5 android obb data download link
Be extremely cautious of sites offering a direct . There is no official 100MB, 500MB, or even 2GB file that will give you the real GTA 5 experience on Android. Real GTA 5 cannot be compressed from 100GB