You will see files that claim to be 50MB. These are usually malware. A real PSP ISO for God of War is roughly 1GB to 1.5GB. If you “highly compress” it to 200MB, the audio and cutscenes will be destroyed. Stick to CSO format (compressed ISO) using trusted tools, not sketchy websites.
Find and Download the Game ISO:
Transfer the ISO to Your Android Device: You will see files that claim to be 50MB
Open PPSSPP and Load the Game:
You want to play Ascension on Android. Unfortunately, PS3 emulation on Android does not exist (even high-end PCs struggle with RPCS3). Therefore, you cannot play Ascension on your phone. Find and Download the Game ISO:
However, you can play the two actual PSP God of War games on Android:
These are native PSP titles that run flawlessly on the PPSSPP Emulator (available on the Google Play Store). Transfer the ISO to Your Android Device:
Download PPSSPP Gold (or the free version) from the Google Play Store. This is the only emulator you need. It is safe, fast, and legal.