Sony PS4 lacks backward compatibility with PS3 game discs | Trusted Reviews
PS4 backwards compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
I Made my PS4 Backwards Compatible!! (It's about time...) - YouTube
Ubisoft Says PlayStation 5 Is Not Backwards Compatible With PS1, PS2, or PS3 Games
PS4 Backwards Compatibility – Can you play PS3 games on PS4? - Opinion : r/ PS4
PlayStation 5 backwards compatibility for PS1, PS2, and PS3 games could be provided by a revamped PS Now service with upscaling capabilities - NotebookCheck.net News
It's Time to Bring Real Backwards Compatibility to the PS4
Nope, The PlayStation 5 isn't backwards compatible with PS1, PS2 or PS3 games
No, PS5 Backwards Compatibility with PS3, PS2, and PS1 Games Has Not Been Confirmed | Push Square
How to Play PS3 Games on a PS4 With PlayStation Now