Because there is no GTA 5 Mobile version from Rockstar Games, "Prologue" builds are community-created projects.
– The most common “working” version. Skilled modders have recreated the snowy prologue town (North Yankton) and a simplified bank interior using the engine of Grand Theft Auto: San Andreas (which does have an official Android port). You control CJ with a GTA V skin, not Michael, Trevor, or Franklin. The dialogue is often fan-made or ripped from YouTube. Download Gta 5 Mobile Prologue Version On Android Apk Obb
This is where 90% of users fail. The OBB data must go into the correct directory. Because there is no GTA 5 Mobile version