Download and install the PPSSPP - PSP emulator from the Google Play Store.
Open the PPSSPP app, navigate to the folder where you saved the ISO, and tap the game icon to start. Key Features of the Mod
If you have a high-end Android device (e.g., Snapdragon 888 or better with 8GB+ RAM), you can attempt to play the actual PS3 version using developing PS3 emulators.
The PSP cannot run God of War 3. The PPSSPP emulator is designed for PSP titles (God of War: Chains of Olympus and God of War: Ghost of Sparta). God of War 3 requires a PlayStation 3 (or a high-end PC via RPCS3).