Ensure you have at least 2.5 GB to 3 GB of free space.
The final structure must be Android/obb/com.rockstargames.gtasa/ , and it should contain the .obb files (typically named main...obb and patch...obb ). Download File com.rockstargames.gtasa.zip
Move this entire folder to the following path: Internal Storage > Android > obb . Ensure you have at least 2