Because Rockstar Games has not released an official mobile port of GTA 5 , independent creators develop modded ISO files (disc images). These versions are heavily customized to mimic the console experience while remaining playable on mobile hardware.
Instead of risking your security on “isoromscom,” you can get GTA 5 legitimately and in : isoromscom gta 5 high quality
Even if the file is safe, there is no guarantee it works. "High Quality" ISOs from unofficial sources often have missing cutscenes, broken audio, or textures that fail to load because the repacker accidentally (or intentionally) deleted essential files to save space. Because Rockstar Games has not released an official