Improving the ("illuminazione") and settings in the PES 2012 IPA (iOS version) generally requires modifying the internal game files
Stadium Lighting Mods
: Patches like the 2019 Season Classic Setup transform the 2012 engine with updated stadium lighting and player shadowing.
FPS Stability
: Ensure you have at least 1GB of free storage and close background apps. Stuttering frames can make the lighting look "flickery" on older iOS engines.
: Check if your specific mod includes a "Graphics High" toggle in the settings. This ensures the engine uses the highest available level of detail for player models and stadium shadows.