If you already own the game on PC or console, you can stream it to your phone using Steam Link or PS Remote Play . Official Rockstar Games for Android
If you own GTA 5 on PC (via Steam), you can stream it to your phone. Gta 5 Apk - Obb Download For Android Free Apkpure
The original game is over 100 GB. Mobile hardware generally cannot run the full version of the game natively due to high RAM and GPU requirements. If you already own the game on PC