If your goal is simply to play The Sims 4 while lying on your bed or commuting (without a laptop), you have modern options that destroy the need for a PSP ISO.
These are legitimate PSP titles often confused with the newer entries. Official Sims Games on PSP Sims 4 Psp Iso
Any file claiming to be a Sims 4 ISO for the PSP is likely fake , a mod of an older game , or a virus . If your goal is simply to play The
: Can play the PS4 version of The Sims 4 via "Remote Play" if you own a PS4 console. Nintendo Switch a mod of an older game