While you cannot download the game directly as an APK, you can play the official version on your phone using these legitimate methods: HOW TO PLAY GTA 5 ON MOBILE

Download this app from the Play Store to extract the compressed files.

The most dangerous outcome is downloading malicious software. Many of these sites bundle adware, spyware, or ransomware into the APK. Others force you into an endless loop of completing surveys or downloading other apps to "unlock" the OBB data, which never actually unlocks. The Security Risks of Downloading Compressed APKs

The original PC version of GTA V requires approximately . It is mathematically and technically impossible to compress 120GB of complex game data down to 670MB while maintaining a functional game for Android.