Modders have imported GTA 4’s character models, HUD, weapons, and even some missions into a modded version of GTA: San Andreas for PC. Later, this mod was ported to Android as "GTA 4 Mobile." You run it via the native Android version of San Andreas—not through PPSSPP.
If you want a similar experience on the emulator, these are the official GTA titles released for the PSP: Grand Theft Auto: Liberty City Stories Grand Theft Auto: Vice City Stories Grand Theft Auto: Chinatown Wars Real ways to play GTA 4 on mobile can you play gta 4 on ppsspp
: You can stream the official console or PC version of GTA IV to your phone using services like Xbox Cloud Gaming NVIDIA GeForce NOW Modders have imported GTA 4’s character models, HUD,
: You may see videos or sites offering "GTA 4 ISO for PPSSPP." These are typically fan-made mods of existing PSP games like GTA: Liberty City Stories Searching for a “GTA 4 PPSSPP ISO” is
To put it bluntly: The hardware gap is too vast, the file formats are incompatible, and Rockstar never created a PSP version. Searching for a “GTA 4 PPSSPP ISO” is a waste of time that could expose you to malware.