There is no official release for the PSP or the PPSSPP emulator. GTA 5 was designed for high-performance consoles (PS3, PS4, PS5, Xbox) and PC, which use architectures far beyond the capabilities of the original PSP hardware.

• Fake (the file won’t work or will be a different game),
• Malware (harmful to your device), or
• Misleading (it might actually be a mod of a PSP GTA game, like GTA: Vice City Stories, reskinned to look like GTA 5).

to stream the actual game from a powerful server to your phone. PC Streaming: If you own the game on PC, use apps like Steam Link to play it on your phone over Wi-Fi. Native Ports: Play the official GTA: San Andreas Definitive Edition

Closing recommendation

Play GTA through official channels or legally obtain and play PSP titles that were legitimately released for handhelds. Avoid any website or download that claims “GTA V PPSSPP ISO/ZIP for Android” — it’s almost certainly illegal or unsafe.

: Many sites claiming to offer a "highly compressed" 78MB or 500MB GTA 5 ISO are scams. These files often contain malware, ransomware, or lead to endless "verification" surveys that never deliver the game. Genuine GTA Games You Can Play on PPSSPP

Downloading these files from untrusted sources poses several security and performance risks:

If your goal is to play the actual GTA 5 on your phone, you must use methods that bypass mobile hardware limitations: Cloud Gaming : Services like Xbox Cloud Gaming PS Remote Play

Any "GTA 5 PPSSPP Download" links you find online are typically fan-made mods of older games like GTA: Vice City Stories or GTA: Liberty City Stories, or in worse cases, malicious files designed to harm your device. Why a Real PPSSPP ISO Doesn't Exist