Install the GTA: SA APK file (version 1.08 or higher matching the 8 in the OBB name). Do not open the app yet. Opening it before the OBB is placed will create an empty data folder and might cause conflicts.
The "Main-8-com-rockstargames-gtasa-obb" file is the heart of the GTA San Andreas mobile experience. While the temptation to find quick downloads online is high, the official route ensures your device stays secure and the game runs exactly as the developers intended. If you'd like, I can help you with: Main-8-com-rockstargames-gtasa-obb File Download