Always use caution when downloading files from unverified sources. For the most secure experience, consider playing the official version on PC or using legitimate remote-play options like the Xbox Game Pass or Steam Link to stream it to your phone.
You need two items: The Mod APK (usually 30MB to 50MB) and the Gta 5 Obb Zip -1.6 Gb- file. Do not unzip the OBB on your PC; do it directly on the phone or SD card. Gta 5 Obb Zip -1.6 Gb-