Uninstall the game completely. Reinstall the APK first, do not open it , then place the OBB. Only launch after the OBB is in place.
When searching the web for the file, you will encounter several variants. Here is how to distinguish a legitimate file from a corrupt one: gta vc 1.07 obb
On modern devices (Android 11 and above), you might run into issues where the game can't "see" the OBB folder due to Scoped Storage restrictions. If your game keeps asking to download data despite the OBB being in Android/obb/com.rockstargames.gtavc/ , you may need to use a file manager like ZArchiver to manually grant permissions. 2. The Power of "CLEO" Mods Uninstall the game completely